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Internet Digital Subscriber Line Access Multiplexor

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					    Internet Digital Subscriber Line
          Access Multiplexer



                  CTCU
                 iDSLAM




          CTC UNION TECHNOLOGIES CO., LTD


Version 1.10
Oct. 2002
                    CTC Union Technologies Co., Ltd.
                    Far Eastern Edison Science and Technology Center
                    6F-3, No. 15, Lane 360
                    NeiHu Rd., Section 1
                    NeiHu, Taipei, 114
                    Taiwan


                    Transmission Units Series
                    iDSLAM Installation and Operation Manual
                    Version 1.0 June 2001
                    Version 1.10 October 2002
                         Added Application example
                         Updated troubleshooting section with FAQ


                    This manual supports the following models:
                    iDSLAM




The information contained in this document is subject to change without prior notice.
 CTCU iDSLAM



Table of Contents

1.     BEFORE YOU BEGIN ............................................................................................................................................................3

     1.1            PACKAGE INCLUDES.....................................................................................................................................................3
     1.2            M INIMUM SYSTEM REQUIREMENTS...........................................................................................................................3
     1.3            PREREQUISITE OF YOUR PC: TCP/IP PROTOCOL.....................................................................................................3
     1.4            INFORMATION YOU WILL NEED .................................................................................................................................3

2.     HARDWARE INSTALLATIO N............................................................................................................................................4

     2.1            FRONT PANEL................................................................................................................................................................4
     2.2            BACK PANEL..................................................................................................................................................................5
     2.3            SETUP .............................................................................................................................................................................6
       2.3.1                       Connect to Ethernet.....................................................................................................................................6
       2.3.2                       Connect to the LINE Interface...................................................................................................................6
       2.3.3                       Connect to the DSL Interface.....................................................................................................................6
       2.3.4                       Connect to Power.........................................................................................................................................7

3.     CONFIGURATION ..................................................................................................................................................................7

     3.1            SETUP .............................................................................................................................................................................7
     3.2            ESTABLISH THE CONNECTION ....................................................................................................................................7
     3.3            SETUP IDSLAM'S IP A DDRESS...................................................................................................................................8
     3.4            A DMINISTRATION..........................................................................................................................................................9
       3.4.1                       Network Configuration...............................................................................................................................9
           3.4.1.1                          LAN.......................................................................................................................................................9

           3.4.1.2                          DSL Port ..............................................................................................................................................10

           3.4.1.3                          Routing Table.......................................................................................................................................10

       3.4.2                       DSL Configuration.....................................................................................................................................12
           3.4.2.1                          DSL Basic Configuration.....................................................................................................................12

           3.4.2.2                          DSL Advanced Configuration .............................................................................................................13

     3.5            M AINTENANCE ..........................................................................................................................................................15
       3.5.1                       DSL Port Status..........................................................................................................................................15
       3.5.2                       Security Settings.........................................................................................................................................17
       3.5.3                       Restart..........................................................................................................................................................18
           3.5.3.1                          Save......................................................................................................................................................18

           3.5.3.2                          Save & Restart .....................................................................................................................................18

           3.5.3.3                          Default System & Restart....................................................................................................................19

           3.5.3.4                          Reset Control.......................................................................................................................................19


                                                                                                                                                                                     -1-
 CTCU iDSLAM



     3.6             FACTORY DEFAULT S...................................................................................................................................................20
       3.6.1                        Management Password.............................................................................................................................20
       3.6.2                        Network Configuration.............................................................................................................................20
           3.6.2.1                          LAN.....................................................................................................................................................20

           3.6.2.2                          DSL Port ..............................................................................................................................................20

           3.6.2.3                          Routing Table.......................................................................................................................................21

       3.6.3                        DSL Basic Configuration..........................................................................................................................22
       3.6.4                        DSL Advanced Configuration..................................................................................................................23

4.     APPLICATION EXAMPLE................................................................................................................................................ 24

     4.1             CONSIDERATIONS........................................................................................................................................................24
     4.2             QUICK CONFIGURATION ............................................................................................................................................25

5.     TROUBLESHOOTING........................................................................................................................................................ 25

     5.1             LAN LED ON UNIT IS NOT LIT GREEN ...................................................................................................................25
     5.2             I DSLAM A ND YOUR PC DO NOT HAVE LAN CONNECTION..............................................................................25

     5.3             I CHANGED THE IP ADDRESS BUT NOW CANNOT CONNECT ...................................................................................26
     5.4             HOW CAN I UPGRADE THE IDSLAM FIRMWARE ?..................................................................................................27
     5.5             I GOT THE "NPIMAGE NOT FOUND" MESSAGE, NOW WHAT ?.................................................................................28

5.     APPENDIX............................................................................................................................................................................... 29

                     SOFTWARE SPECIFICATIONS......................................................................................................................................29
                     HARDWARE SPECIFICATIONS.....................................................................................................................................30




                                                                                                                                                                                   -2-
CTCU iDSLAM



1.Before You Begin

    1.1 Package Includes
         l    One iDSLAM

         l    Power cord.

         l    A pair of mounting brackets.



    1.2 Minimum Configuration PC Requirement s
         l 10Base-T Ethernet interface
         l Web Browser that supports Frame and Java Script 1.2. Microsoft IE 4.0/Netscape
              6 or higher is recommended.



    1.3 Prerequisite of Your PC: TCP/IP Protocol
         To ensure smooth configuration, TCP/IP protocols must be installed on your PC
         before it is connected to the LAN port. Please refer to the user manuals of your PC
         and operating system for the installation and configuration of TCP/IP protocols.



    1.4 Information You Will Need
         The following information should be obtained from your ISP or company server for
         the configuration of your iDSLAM.

         l IP addresses
         l Subnet mask
         l Gateway IP address
         l DNS IP addresses (Primary and Secondary)

         The following information should be planned before installation if needed.

         l VPI/VCI




                                                                                       -3-
CTCU iDSLAM




2. Hardware Installation

    2.1 Front Panel
          CTCU iDSLAM has 13 LED indicators, one LAN and 8 pairs of DSL/LINE
          interfaces on the front panel.




2.1.1 Interface

          LAN:

          This interface provides one 10Base-T port and is the uplink for all 8 downstream
          ADSL feeds.


          LINE1 to LINE8:

          Each of these 8 interfaces provides one port to an original POTS telephone line.



          DSL1 to DSL8:

          Each of these 8 interfaces provides one port of an ADSL line.



2.1.2 LED

          POWER:

          A green LED indicates that the power has been connected to your correctly.




                                                                                        -4-
CTCU iDSLAM



         LAN:

         l    LAN – LNK: A green LED shows the status of the connection between your
              UNIT and your Ethernet network. When there is a valid connection, the LED
              turns on green and remains solid.

         l    LAN – ACT: A green LED becomes flashing when there is LAN activity on your
              unit.



         ALARM:

         l    ALARM – MAJOR: A red LED indicates that there is loss of signal on the LAN
              interface.



         DSL1 to DSL8:

         Each of the 8 green LEDs shows the connection status of the corresponding DSL
         interface. When there is a valid connection, the LED turns on green. It becomes
         flashing when there is DSL traffic activity on that interface.



    2.2 Back Panel
         There is an RS232 interface, an AC input for power cord attachment and a power
         switch on the back panel of your UNIT.




                                                RS232




         RS-232:

         This interface provides one RS-232 port (DCE) for console control.




                                                                                     -5-
CTCU iDSLAM




    2.3 Setup
          l   Step 1: Choose a location that is close to a power outlet. Avoid direct sunlight.

          l   Step 2: Choose a level and secure surface for your unit.


2.3.1 Connect to Ethernet
                 l   Step 1: Locate your Ethernet cable.

                 l   Step 2: Attach the Ethernet cable to the LAN interface of your unit.

                 l   Step 3: Attach the other (loose) end of the Ethernet cable to your Ethernet
                     network.

                  Option 1: Directly attach the loose end to the Ethernet port on your PC
                  during the configuration of your unit. (requires X-over cable)
                  Option 2: Directly attach the loose end to your Ethernet network, if any,
                  during normal operation. (connects 1:1 with a HUB device)
                 l Step 4: Power on your PC, the LAN – LNK LED on the front panel should
                    be lit green to show a valid Ethernet connection. If the LAN LED remains
                    off, repeat the steps 1 through 3.


2.3.2 Connect to the LINE Interfaces
                 l   Step 1: Locate a telephone cable for each port.

                 l   Step 2: Attach one end of the cable to one of the LINE ports of your unit.

                 l   Step 3: Attach the other (loose) end of the cable to a POTS line interface
                     from your telephone service provider.


2.3.3 Connect to the DSL Interfaces
                 l   Step 1: Locate a telephone cable for each port.

                 l   Step 2: Attach one end of the cable to one of the DSL port of your unit.

                 l   Step 3: Attach the other (loose) end of the cable to the DSL line interface
                     to your customer's ADSL modem.




                                                                                          -6-
CTCU iDSLAM



2.3.4 Connect to Power
                l    Step 1: Attach the power cord to the AC input on your unit.

                l    Step 2: Turn on the power switch.




3. Configuration

    3.1 Initial Setup
         l    Step 1: Connect the iDSLAM and your PC with a cross-over Ethernet cable.

         l    Step 2: Power on the iDSLAM. The LEDs on the iDSLAM will be cycling while
              the unit is booting.

         l    Step 3: After the LEDs stop cycling, you should be able to ping the iDSLAM
              from your PC. The default IP of the iDSLAM is 172.24.1.254. At a DOS prompt,
              type in "ping 172.24.1.254" and you should see the iDSLAM respond to the ping.
              Note that your PC should be programmed to have same IP domain as the
              iDSLAM.



    3.2 Establish The Connection
         l    Enter the IP address (default is 172.24.1.254) of your iDSLAM into the Web
              Browser. For example, in Internet Explorer's Address box enter
              http://172.24.1.254/ and press ENTER.

         l    A Dialogue Box will pop up to request the user password for login. (Figure 1)




                                 Figure 1. Authentication

                                                                                      -7-
CTCU iDSLAM



         l    The User Name field is not used, so it can be any string or just le ft blank. Please
              enter the management password into the Password field then clicks the OK button.
              The default password should be "CTCU100" (no quotes) or "TeraCom" (no
              quotes) depending upon the firmware version and factory settings of the iDSLAM.
              The password IS cAse SenSitivE, so enter it exactly as shown.

         l    If the authentication passes, the main management screen "Network
              Configuration" will be displayed on the browser. (Figure 2)




                             Figure 2. iDSLAM Configuration Main Screen



    3.3 Setup iDSLAM's IP Address
        It is important to follow this procedure exactly when changing the iDSLAM's LAN IP
        address.

         l    Step 1: From Network Configuration page, modify the LAN IP address and
              subnet mask settings. (see RED arrow in Figure 2)




                                                                                        -8-
CTCU iDSLAM



         l    Step 2: At the bottom of the page click the "Verify" button to ensure that your
              settings are acceptable. Then click the "Send" button. It is extremely important
              that the iDSLAM NOT BE POWERED OFF at this point.

         l    Step 3: Re-configure the PC's IP address to the newly assigned IP domain and
              regain access to the iDSLAM with the browser.

         l    Step 4: In the left hand frame click the "Restart" link.

         l    Step 5: From the Restart page click the "Save&Reset" button. Alternately for
              steps 4 and 5 you may issue "config save" command from terminal mode.

         l    Step 6: DO NOT INTERRUPT the iDSLAM as it updates the flash memory.

         l    Step 7: Now the LAN IP is set and you may continue with additional
              configuration steps.

    3.4 Administration
         The system administrator can configure the iDSLAM remotely or locally via a Web
         Browser. You need to plan your network configuration before starting the
         configuration procedure.



3.4.1 Network Configuration
                 Each device will be set to the factory default configuration when you receive it,
                 please refer to the Section 3.5 "Factory Defaults" for details. The configuration
                 of the UNIT network is divided into three categories: LAN, DSL port and
                 Routing Table.

                  3.4.1.1 LAN
                         First you need to configure the IP and the Netmask of Ethernet (LAN)
                         port on your UNIT. (Please refer to 3.3 LAN IP Setting.) This port
                         allows you to connect any broadband access technologies with an
                         Ethernet interface to your iDSLAM system. With the Ethernet IP and
                         Subnet Mask, the system administrator can connect to this device
                         through any compatible web browser.

                         Each UNIT will have the factory default set to allow the system
                         administrator to configure the device easily when the device is first
                         installed.



                                                                                         -9-
CTCU iDSLAM



       3.4.1.2 DSL Port
                          You may use the default settings or manually assign a virtual IP (WAN
                          IP) to each of the 8 DSL ports. You will also need to assign netmask,
                          vpi/vci, and a virtual IP for the CPE DSL port.

                          Each DSL port is pre-configured with 2 PVCs. The first PVC (0/33) is
                          an IPoA (RFC 1577 IP over ATM) PVC shown on the Network
                          Configuration page. It is intended to connect to a router CPE device at
                          the CPE side. Please see the ATU-R user manual configuration page.
                          Fill in the routing table for each port on the "Network Configuration"
                          page.

                          The second pre-configured PVC (0/88) is an RFC 1483 LLC bridged
                          PVC. This PVC is currently hidden and not managed through the
                          browser interface. However, you can connect a bridge CPE device to
                          each of the 8 DSL ports even if you have a routing mode configuration
                          on the "Network Configuration" page. See the ATU-R user manual
                          configuration page for details.


                  3.4.1.3 Routing Table
                         Now you will need to configure the routing table for all DSL ports and
                         the Ethernet port. The "Gateway Address" in the routing table for each
                         DSL port has to be the same virtual IP address as the "Remote IP" of
                         that DSL port. From the CPE side's point of view, its "Gateway
                         Address" will be the virtual IP address assigned to the iDSLAM's DSL
                         port. (Refer to application example in section 4.)

                          The NAT checkbox allows you to enable or disable the Network
                          Address Translator function (RFC 1631). Many addresses on the local
                          network are mapped to the single externally visible address (factory
                          default: 172.24.190.254) on the public internet. And the RIP checkbox
                          allows you to enable or disable the Routing Information Protocol for
                          all the DSL ports.

                          Remember to "verify" and "send " after configuration to update the
                          internal filesystem. The changes are not permanent until you "save "
                          the changes by using the "Restart" page. See the "Restart" page 18 for
                          details.



                                                                                        - 10 -
CTCU iDSLAM




               Figure 3. First half of the Network Configuration page




              Figure 4. Second half of the Network Configuration page



                                                                        - 11 -
CTCU iDSLAM

3.4.2 DSL Configuration
                 DSL configuration is divided into two categories: DSL Basic Configuration
                 and DSL Advanced Configuration.



       3.4.1.1 DSL Basic Configuration
                  There are 8 parameters on this page.




                            Figure 5. DSL Basic Configuration



                           3.4.2.1.1 Usage
                                     Enable or disable one DSL port.


                           3.4.2.1.2 Operation Mode
                                     Choose operation mode for one DSL port between
                                     'G.DMT', 'G.Lite', 'Multi' (for multi- mode), and 'ANSI' (for
                                     T1.413).




                                                                                        - 12 -
CTCU iDSLAM



                      3.4.2.1.3 Max rates (up and down link)
                                Specify maximal rates of up link and down link for one
                                DSL port. (in Kbps)

                      3.4.2.1.4 Min rates (up and down link)
                                Specify minimal rates of up link and down link for one
                                DSL port. (inKbps)

                      3.4.2.1.5 Interleave delay(up and down link)
                                 Latency is fast (minimum delay) if 'fast' is chosen.
                                 Otherwise, it is interleaved (longer delay) and the delay
                                 time is just as it's shown in the dialog box.



              3.4.2.2 DSL Advanced Configuration
              There are 6 parameters in this page.




                    Figure 6. DSL Advanced Configuration




                                                                                   - 13 -
CTCU iDSLAM



                         3.4.2.2.1 Trellis
                                   Enable or disable Trellis coding. It will not be operational
                                   until ATU-R also enables trellis coding.

                         3.4.2.2.2. EC/FDM
                                    Depending upon which mode is provided by your CPE
                                    equipment, overlap of bins (Echo Cancellation) or no
                                    overlap (Frequency Division Multiplexing).

                         3.4.2.2.3. Attenuation TX Power
                                    The value of transmit power attenuation can be from 0 to
                                    12 dB.
                         3.4.2.2.4. Coding Gain
                                    Coding gain is the gain due to trellis/RS (Reed-Solomon)
                                    coding. 'Auto' is chosen for automatic bit allocation
                                    depending upon line conditions. Otherwise, requested
                                    coding gain is selectable from 0 to 7dB.

                         3.4.2.2.5. Target Noise Margin (up and down link)
                                    The value of target noise margin in both downstream and
                                    upstream ranges from 0 to 15dB.



              Remember to "verify" and "send " after configuration. Again, the changes are
              not applied to the internal filesystem until you "verify" and "send ". You will
              also need to "save " the changes by using the "Restart" page if you want to make
              changes permanent in the flash memory and available even after your iDSLAM
              reboots. See the "Restart" page 18 for details.




                                                                                      - 14 -
CTCU iDSLAM


    3.5 Maintenance
         The system administrator can change the password, review the status of the DSL ports
         and restart the system remotely.


3.5.1 DSL Port Status
                There are several system statistics and status provided here for analysis
                purpose. Clicking the Status link will bring you to the Status Monitoring page.




                                       Figure 7. DSL Port Status



               Detailed descriptions of error data are as follows:

               l ADSL LOS: Counter of loss of signal.

               l ADSL SEF: Counter of severely errored frames.

               l ADSL FEC-F: Counter of Reed-Solomon forward error corrections for the
                 fast data stream.

                                                                                      - 15 -
CTCU iDSLAM



              l ADSL FEC-I: Counter of Reed-Solomon forward error corrections for the
                interleaved data stream.

              l ADSL CRC-F: Counter of CRC anomalies for the fa st data stream.

              l ADSL CRC-I: Counter of CRC anomalies for the interleaved data stream.

              l ADSL NCD-I: Counter of no cell delineation for the interleaved data
                stream.

              l ADSL NCD-F: Counter of no cell delineation for the fast data stream.

              l ADSL LCD-I: Counter of loss of cell delineation for the interleaved data
                stream.

              l ADSL LCD-F: Counter of loss of cell delineation for the fast data stream.




                                                                                  - 16 -
CTCU iDSLAM




3.5.2 Security Settings
                The iDSLAM browser management tool is protected by a security password.
                The system password can be changed here. The correct old password is needed.
                Two identical strings must be entered and they cannot be blank. DO NOT
                FORGET YOUR PASSWORD. Keep a record of your unit's password
                preferably on the machine itself (assuming the physical environment is a
                secure one). If you loose or forget the password you are out of luck as there is
                no "backdoor" password and no recovery procedure that can be performed
                outside of our factory. You have been warned!!




                                      Figure 8. Security Settings




                                                                                     - 17 -
CTCU iDSLAM




3.5.3 Restart
                 There are three functional categories on this page: "Save", "Save & Restart",
                 and "Default System & Restart".

                 Since functions on this page will require the system to be restarted or the
                 configuration to be changed in the non- volatile memory (flash), the system
                 will ask for confirmation when any one of these buttons is clicked.




                                   Figure 9. Save and Restart



       3.5.3.1 Save
                      Save the settings of Network Configuration and DSL Port Configuration into
                      the unit's flash memory.


       3.5.3.2 Save & Restart
                   Save the settings of Network Configuration and DSL Port Configuration into
                   the unit's flash memory, followed by a system restart (reboot).

                                                                                       - 18 -
CTCU iDSLAM



       3.5.3.3 Default System & Restart
                   Resets all settings of Network Configuration and DSL Port Configuration to
                   the factory defaults, writes the settings into the unit's flash memory, and is
                   followed by a system restart (reboot).


       3.5.3.4 Reset Control
                   If the system or just some of the 8 DSL ports do not work smoothly, the
                   system administrator can individually reset and restart one of the 8 DSL
                   ports or the entire iDSLAM system. Select the action and click the "Send"
                   button.




                                                                                        - 19 -
CTCU iDSLAM


    3.6 Factory Defaults


3.6.1 Management Password
               The default password is either : CTCU100 or TeraCom



3.6.2 Network Configuration
                3.6.2.1 LAN
                        IP            : 172.24.1.254
                       Subnet Mask    : 255.255.0.0


                3.6.2.2 DSL Port
                        Port 1        : IP: 10.0.0.2
                                        Netmask: 255.255.255.0
                                        VPI/VCI: 0/33
                                        Remote IP: 10.0.0.1
                       Port 2         : IP: 10.0.1.2
                                        Netmask: 255.255.255.0
                                        VPI/VCI: 0/33
                                        Remote IP: 10.0.1.1
                       Port 3         : IP: 10.0.2.2
                                        Netmask: 255.255.255.0
                                        VPI/VCI: 0/33
                                        Remote IP: 10.0.2.1
                       Port 4         : IP: 10.0.3.2
                                        Netmask: 255.255.255.0
                                        VPI/VCI: 0/33
                                        Remote IP: 10.0.3.1
                       Port 5         : IP: 10.0.4.2
                                        Netmask: 255.255.255.0
                                        VPI/VCI: 0/33
                                        Remote IP: 10.0.4.1




                                                                     - 20 -
CTCU iDSLAM

                          Port 6   : IP: 10.0.5.2
                                    Netmask: 255.255.255.0
                                    VPI/VCI: 0/33
                                    Remote IP: 10.0.5.1
                          Port 7   : IP: 10.0.6.2
                                    Netmask: 255.255.255.0
                                    VPI/VCI: 0/33
                                    Remote IP: 10.0.6.1
                          Port 8   : IP: 10.0.7.2
                                    Netmask: 255.255.255.0
                                    VPI/VCI: 0/33
                                    Remote IP: 10.0.7.1


       3.6.2.3 Routing Table
                          Port 1   : Network Address: 192.168.1.0
                                    Netmask: 255.255.255.0
                                    Gateway: 10.0.0.1
                          Port 2   : Network Address: 192.168.2.0
                                    Netmask: 255.255.255.0
                                    Gateway: 10.0.1.1
                          Port 3   : Network Address: 192.168.3.0
                                    Netmask: 255.255.255.0
                                    Gateway: 10.0.2.1
                          Port 4   : Network Address: 192.168.4.0
                                    Netmask: 255.255.255.0
                                    Gateway: 10.0.3.1
                          Port 5   : Network Address: 192.168.5.0
                                    Netmask: 255.255.255.0
                                    Gateway: 10.0.4.1
                          Port 6   : Network Address: 192.168.6.0
                                    Netmask: 255.255.255.0
                                    Gateway: 10.0.5.1




                                                                    - 21 -
CTCU iDSLAM

                         Port 7           : Network Address: 192.168.7.0
                                           Netmask: 255.255.255.0
                                           Gateway: 10.0.6.1
                         Port 8           : Network Address: 192.168.8.0
                                           Netmask: 255.255.255.0
                                           Gateway: 10.0.7.1
                         Ethernet         : Network Address: 0.0.0.0
                                           Netmask: 0.0.0.0
                                           Gateway: 172.24.190.254
                                           NAT: Disable
                         RIP              : Disable



3.6.3 DSL Basic Configuration
               The default settings of all the 8 ports are as follows.
                         Usage            : Enable
                         Operation        : G.DMT
                         Mode
                         Maximum          : 800
                         Rates (Up
                         Link)
                         Maximum          : 8000
                         Rates (Down
                         Link)
                         Minimum          : 32
                         Rates (Up
                         Link)
                         Minimum          : 32
                         Rates (Down
                         Link)
                         Interleave       : 32
                         Delay (Up
                         Link)
                         Interleave       : 32
                         Delay (Down
                         Link)




                                                                           - 22 -
CTCU iDSLAM




3.6.4 DSL Advanced Configuration
              The default settings of all the 8 ports are as follows.
                        Trellis          : Enable
                        EC/FDM           : FDM
                        Attenuation      :0
                        TX Power
                        Coding Gain      : Auto
                        Target Noise     :6
                        Margin (Up
                        Link)
                        Target Noise : 6
                        Margin (Down
                        Link)




                                                                        - 23 -
CTCU iDSLAM



4. APPLICATION EXAMPLE

    4.1 Considerations
         The iDSLAM comes configured with basic settings which enable it to be quickly
         applied to a normal ADSL distribution network such as in an office building or
         hotel/motel environment. By placing the iDSLAM(s) in a central location near phone
         service, the existing telephone lines may be utilized for distribution of wide
         bandwidth ADSL to any number of clients.

         From the CPE's side ADSL modem, the normal phone line will provide an uplink path
         to the iDSLAM. The iDSLAM in turn will uplink to a LAN backbone network via its
         LAN interface. Multiple iDSLAMs need merely be linked to a switching HUB device
         for uplink to Fiber service or other WAN routing devices.




                                                                       1 2   3
                                                                       4 5   6
                                                                       7 8   9
                                                                         8   #
                                                                       *




                                     LK  A
                                  T A / D TA
                                         TA LK    S
                                                 R C S T R R D TD CD




                        Figure 10: iDSLAM Typical Application


                                                                                   - 24 -
CTCU iDSLAM


    4.2 Quick Configuration
         If we match our CPE side ATU-R modems to the iDSLAM's DSL settings, our
         configuration work becomes easy. The only configuration required on the iDSLAM
         will be the LAN IP address and the routing table/gateway settings. If we refer to
         Figure 10, in our application drawing, we have assigned the iDSLAM's IP address on
         our Ethernet network and entered the Gateway Address to our default gateway (our
         router) in the routing table. By checking the "NAT" checkbox, we allow all of the
         downstream ADSL connections to access the LAN with only the one LAN IP address
         of the iDSLAM.

         All of the ATU-R CPE side modems will be configured to match the iDSLAM's
         settings depending upon which port on the iDSLAM it is attached. In our example we
         show only one modem attached to PORT1 of the iDSLAM. We set the IP of the ATUR
         to 192.168.1.1, enter our ISP's DNS information, enable the DHCP server to assign IP
         addresses automatically to any attached clients, set our VPI/VCI to 0/33, set the WAN
         IP to 10.0.0.1 and point it to the iDSLAM's WAN IP, 10.0.0.2. When we configure the
         modem for PORT2, we will set its LAN IP to 192.168.2.1, WAN IP to 10.0.1.1 and
         gateway to 10.0.1.2; for PORT3 the LAN IP will be 192.168.3.1, WAN IP will be
         10.0.2.1 with a gateway setting of 10.0.2.2 and so on. (Refer to the Network
         Configuration screen on page 11.)




5. Troubleshooting

    5.1 LAN LED on iDSLAM Is Not Lit Green
         This indicates your unit does not have a valid connection to your Ethernet network.
         Power off your unit and then verify your unit is connected to your Ethernet network.
         Refer to Chapter 2 for correct connection. After connecting to the Ethernet, connect
         the power cord according to Chapter 2.



    5.2 iDSLAM And Your PC Do Not Have LAN Connection
         Your unit and your PC must be configured to be in the same subnet. Otherwise they
         will not have access to each other. Verify your PC has been configured correctly
         according to the information obtained from your ISP or network manager. For more
         specific information, please consult your ISP or network manager.


                                                                                     - 25 -
CTCU iDSLAM




    5.3 I changed the IP address of the iDSLAM but now cannot

    connect
         You must follow the procedure exactly as outlined in section 3.3. If not, you may
         loose contact with the iDSLAM and be unable to ping either the old address or the
         newly entered address. Follow this procedure to recover the unit's IP address:



          Disconnect the Ethernet cable from the iDSLAM's front panel "LAN" connector.
          Then, please follow this procedure from Hyperterminal(TM):

          10.1.100.1> ip
          10.1.100.1 ip> device delete ethernet
          10.0.0.1 ip> device add ethernet ether <your IP address>
          10.0.0.1 ip> config save
          10.0.0.1 ip> home
          10.0.0.1> restart


          Reconnect the LAN cable and access the iDSLAM via http (browser) using the IP
          address set above, and continue with your normal configuration.


         If you go to the "restart" menu you can select the button to do a "factory reset". Please
         be aware that the IP address will revert back to 172.24.1.254 and that the login
         password may or may not change from "CTCU100" to "TeraCom" (depends on
         production model). Please enter the upper and lowercase exactly. If you go to the
         "security" page, you can set the password to whatever you want. Please don't forget
         your password!




                                                                                        - 26 -
CTCU iDSLAM


    5.4 How can I upgrade the iDSLAM firmware?
         You must obtain the upgrade "ZIP" file from your distributor or from CTC Union,
         then follow the procedure exactly as outlined below:



         1. Save the ZIP file to the PC.( Please use a PC with TCP/IP setup )

         2. Connect a crossover Ethernet cable from PC Ethernet port to iDSLAM's LAN port.

         3. Unzip the file ( for example : to the location c:>\idslam )

         4. Close all running Windows applications and open a DOS prompt window and go to
         the unzipped files location ( for example : c:>cd \idslam )

         5. Note that your PC must be on the same IP domain as the iDSLAM. (for example :
         iDSLAM IP is 172.24.1.254, and PC IP must be 172.24.1.X )

         6. After the iDSLAM powers on , ping the iDSLAM from your PC and make sure that
         it replies.

             ( for example : assuming the iDSLAM IP is the default - 172.24.1.254 . Please
         give the command "ping 172.24.1.254", and then you should see the return message
         "Reply from 172.24.1.254: bytes=32 time=7ms TTL=30")

         7. If the password of iDSLAM is not the default "TeraCom", please change the
         password back to the default "TeraCom", and turn off the NAT option, then
         save&restart. After the restart has completed, from the DOS window, give the
         command "upgrade 172.24.1.254"(if the iDSLAM's IP is 172.24.1.254)

              for example : "c:\idslam> upgrade 172.24.1.254"

            When the upgrade process starts, new firmware will be tftp from the PC to the
         iDSLAM. After the transmission of each file, you should see a transfer successful
         message like:

              " Transfer successful: 13040 bytes in 1 second, 13040bytes/s"

         8. After the whole transmission process ends, the DOS prompt window will revert to
         "c:\idslam>"; please wait until you see that the iDSLAM has restarted completely.
         ( LEDs on iDSLAM will cycle to show the progress of the restart process). Do NOT
         power off the iDSLAM until it completely reboots; otherwise the flash could be
         damaged.

         10. The upgrade is now complete.




                                                                                    - 27 -
CTCU iDSLAM


    5.5 I got the "NPimage not found" message. What now?
         If you see this message, it means the file system of the flash memory has been
         corrupted. This will happen if there is any interruption to the flash update process
         when saving configuration changes or updating the flash firmware. You must obtain
         the flash "image" file from your distributor or from CTC Union, then follow the
         procedure exactly as outlined below:

         DO NOT ALLOW POWER TO BE INTERRUPTED DURING ANY PHASE OF
         THE BELOW PROCEDURE.

         1. The procedure requires a terminal connection to the iDSLAM's RS-232 console
         port. Your terminal program must also support the Xmodem file transfer protocol. A
         handy terminal program included with Windows® is HyperTerminal™.

         2. While using HyperTerminal, at the "]" (console prompt) type "xmodem" (no
         quotes).

         3. From HyperTerminal's 'Transfer' pull-down menu select 'send'.

         4. Browse to the image file (flashc.bin).

         5 . Ensure protocol is 'Xmodem' and 'send'. The image file will take approximately 18
         minutes to upload to the iDSLAM's internal filesystem.

         6. After the download has completed, type 'quit' at the console prompt.

         7. When the unit has completed restarting, enter the default password 'CTCU100'.

         8. Go to the flash file system menu by typing 'flashfs' at the prompt.

         9. Execute the 'update' command to write the internal file system out to the flash.

         10. Alternately, just issue the "flashfs update" command from the home menu.

         Wait for the unit to complete writing and to reboot completely.



         In the future, be careful not to allow any power interruptions to occur when any
         configuration is being saved to flash, otherwise it will cost you twenty minutes to
         upload a new image using the above procedure.




                                                                                        - 28 -
CTCU iDSLAM



6. Appendix

Software Specification
l   Function:
    l ADSL multi- mode ATM to IP DSLAM (Digital Subscriber Line Access Multiplexer)
    l Router and bridge modes
l   ADSL:
    l Auto re-start after power failure
    l Auto connect
    l Spectral mask for ADSL G.DMT complies with the Power Spectrum Density (PSD) mask
        in ITU-T G.992.1 Annex A. Supports Overhead Framing, EOC, AOC defined in ITU-T
        G.992.1 and ITU-T G.997.1. Fast/Interleaving Latency Mode can be manually configured,
        and the capability of Category I defined in ITU-T G.992.1 is supported.
    l Spectral mask for ADSL G.Lite complies with the Power Spectrum Density (PSD) mask in
        ITU-T G.992.2 Annex A. Supports Overhead Framing, EOC, AOC defined in ITU-T
        G.992.2 and ITU-T G.997.1. Interleave Mode operation is supported.
    l The G.DMT/G.Lite ave rage PSD within the used pass-band is less than –36.5 dBm/Hz and
        pass-band ripple is less than +3.5 dB.
    l Complies with T1.413 Issue 2
    l Complies with ITU-T G.992.1 Annex A.
l   Network Protocols:
    l IP (RFC 791)
    l ARP (RFC 826)
    l ICMP (RFC 792)
    l TFTP Client and Server
    l HTTP
    l DNS Relay and Caching
l   Bridging Protocols:
    l Ethernet to ADSL self- learning Transparent Bridging (IEEE802.1d)
    l Bridge Filters – for filtering specific source/destination MAC addresses
    l Support up to 4096 MAC learning addresses
    l Support Spanning-tree option
l   Routing Protocols:
    l RIP1 (RFC 1058), RIP2 (RFC 1389) and static routing.
l   NAT:
    l Supports multi- user sharing via ADSL and Ethernet ports. (RFC 1631)


                                                                                    - 29 -
CTCU iDSLAM

    l  Supports generic TCP/UDP protocol such as HTTP, Internet control message protocol such
       as ICMP.
    l Supports server hosting such as Web, FTP, Mail.
    l Allows more than 128 host connections.
l   ADSL Port WAN Protocols:
    l Multiple protocol over AAL5: LLC encapsulation and VC-based multiplexing (RFC 1483)
    l Classic IP (RFC 1577, RFC 1483)
    l All payload encapsulation protocols (RFC 1483 and RFC 2364) can be configured via
       management interface
l   ATM:
    l Support ATM cell format ITU-T I.361
    l Support ATM Forum UNI 3.1/4.0
    l Up to 8 ATM VCCs (Virtual Circuit Connection)
    l Support UBR.
    l OAM F5 loopback support (I.610)
    l Auto-Forwarding rate up to 640Kbps
l   Network Management:
    l Web-Based configuration and status monitoring
    l OAM F5 loopback support
    l Remote firmware upgrade


Hardware Specification
l   ADSL Interface
    l Eight ADSL ports (RJ-11)
    l ITU-T G.992.1 (G.DMT) and ITU-T G.992.2 (G.Lite)
    l ADSL handshake protocol: ITU-T G.994.1 (Supported in both G.DMT and G.Lite)
l   Ethernet Interface
    l One 10Base-T Ethernet port (RJ-45)
    l Complies with IEEE 802.3
l   ADSL Data Rate
    l G.DMT: Up to 8 Mbps downstream and up to 1 Mbps upstream operating at G.DMT full
        rate connection
    l G.Lite: Up to 1.5 Mbps downstream and up to 1 Mbps upstream operating at G.lite
        connection
l   LED
    l POWER
    l LAN -- LNK


                                                                                    - 30 -
CTCU iDSLAM

    l LAN – ACT
    l ALARM – MAJOR
    l ALARM – MINOR
    l DSL1 – DSL8
l   Operating Environment
    l Operating temperature range: 5 ° C to 50 ° C (40 ° F to 122 ° F)
    l Operating humidity range: 0% to 95% non-condensing
l   Power
    l External power supply
    l Input: 90VAC -- 220VAC / 47Hz -- 63Hz
    l Power Consumption: 40W max
l   Compliance/Regulatory
    l EMI/Immunity: FCC Part 15 Class A
    l Safety: FCC Part 68
l   Physical Specification
    l Dimension: 433 (W) x 263 (D) x 45 (H) mm
    l Weight: 4.3 kg




                                                                         - 31 -
E1 Transmission Units
    CTC Union Technologies Co., Ltd.
    Far Eastern Edison Science and Technologies Center
    (Nei-Hu HI-TEC Park)
    6F-3, No.15, Lane 360, Nei-Hu Road, Section 1
    Nei-Hu, Taipei, Taiwan
    Phone:(886) 2.2659.1021 Fax:(886) 2.2799.1355
    E-mail: info@ctcu.com    http://www.ctcu.com/

				
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Description: DSLAM (Digital Subscriber Line Access Multiplexer) system is a variety of DSL central office equipment, access equipment belonging to the last mile (the last mile), its function is to accept all of the DSL lines, traffic aggregation, the equivalent of a floor switch.