Dual Fractional _ Full T1 _ E1 User Manual

Document Sample
Dual Fractional _ Full T1 _ E1 User Manual Powered By Docstoc
					User Manual
Dual Fractional and Full
T1 / E1 Module for 6 Port Mux




              Doc. 602-14323-11
           Release Date July 19, 2007
6-Port Mux FF T1/E1 Module Manual Dwg # 602-14323-11; Revision Levels:

 SECTION                       DWG            REV    REVISED/
                                                     RELEASED

 All                           602-14323-11     A    September 12, 2005

 Changed title from Intelli-   602-14323-11     B    July 19, 2007
 Mux Dual Fractional and
 Full T1/E1 Module to Dual
 Fractional and Full T1/E1
 Module for 6 Port Mux.
 Also, replaced Intelli Mux
 with 6 Port Mux throughout
 the document.




Moseley 6- Port Mux — FF T1/E1 Module                          Doc 602-14323-11 Rev.B.
Table of Contents                                                                                                                              Page ii


                                                  Table of Contents

1      FUNCTIONAL DESCRIPTION ..................................................................................................... 1-1
       Figure 1.1 - Dual Fractional and Full T1 / E1 Module ..............................................................1-1
2      TECHNICAL SPECIFICATION.................................................................................................... 2-1
    2.1 FEATURE LIST ........................................................................................................................... 2-1
    2.2 BLOCK DIAGRAMS.................................................................................................................... 2-2
      Figure 2.2 - T1/E1 Interface Cards ............................................................................................2-2
3      INSTALLATION .............................................................................................................................. 3-1
4      CONFIGURATION..............................................................................................................................2
    4.1 SWITCH SETTINGS ....................................................................................................................... 2
      4.1.1     E1/T1 Switch Settings..................................................................................................... 2
    4.2 INTELLI-MUX CONFIGURATION................................................................................................... 3
    4.3 JUMPERS ...................................................................................................................................... 4
      4.3.1     E1/T1 Impedance Selection Jumper................................................................................ 4
      4.3.2     Balun Ground Lift Jumper .............................................................................................. 4
    4.4 LEDS ........................................................................................................................................... 5
      4.4.1     T1/E1 Interface LEDs ..................................................................................................... 5
      Figure 4.4.1 - Orientation of T1/E1 LEDs on the panel................................................................ 5
5      CONNECTORS AND CABLING ................................................................................................... 5-1
      Figure 5.1 - RJ45/RJ48 Connector Pins.....................................................................................5-1
    5.1 T1 CONNECTOR ........................................................................................................................ 5-1
      Figure 5.1.1 - T1 Pin Connections .............................................................................................5-1
      Figure 5.1.2 - T1 Cross-over Cable............................................................................................5-2
      Figure 5.1.3 - T1 Loopback connector.......................................................................................5-2




Moseley 6- Port Mux — FF T1/E1 Module                                                                               Doc 602-14323-11 Rev. B
Section 1: Functional Description              `                                           Page 1-1




1 Functional Description
The T1/E1 interface is a plug-on module for the 6-port Mux System. It supports the basic
fractional and full T1/E1 functions for short haul applications. Furthermore, an additional plug-on
module allows dual and simple drop and insert functions. The dual mode uses a data stuffing
mechanism to maintain the interface clocks, while passing the data through the synchronus
channel without being dependent on the mux system clock. Therefore, 6-port Mux can support
more than one T1/E1 channels across a single link. The following mode, simple drop and insert
mode, is an extension to the basic fractional mode. In the fractional mode, some of the timeslots
are dropped to the synchronous channel and carried over to the other side of the link. On the
other side, these slots are inserted back into full T1/E1 frame. In the drop and insert mode, in
addition to this, the remaining unused time slots are taken from the T1/E1 channel of the
additional plug-on module and merged into the full frame.




                        Figure 1.1 - Dual Fractional and Full T1 / E1 Module




Moseley 6- Port Mux — FF T1/E1 Module                                        Doc 602-14323-11 Rev.B
Section 3: Installation                                                                   Page 2-1




2 Technical Specification
2.1 Feature list
General Features:
         Loopbacks: Local and Remote Loopbacks
         Receive and Transmit Jitter Attenuators: 64 bits.
         Supported Alarms: Detects Red (Loss of Signal and Loss of Sync), Yellow (Remote
         Alarm), Blue (Alarm Indication Signal), CRC Error, Link Error, BPV, Internal Error Alarms
         AIS and Remote Alarm Generation
         FCC Part 68 Compliance
Fractional / Full T1 Interface:
         Framing: D4, ESF (Switch Selectable)
         CRC-6 Generation
         Supported Link Speeds: n x 64 kbps up to n = 24 (Switch Selectable)
         Line Code: AMI
         Zero Suppression: Transparent, B8ZS
         Impedance: 100 ohms, balanced
         Jitter Performance: As per AT&T TR-62411, GR-253-CORE, TR-TSY-000009
         Connector: RJ45
         Transmit Timing: Internal (Provided by 6-port Mux)
         Timeslot Allocation: Individually Selectable
         Line Length Equalization: 0 ft to 655 ft (Switch Selectable)
         Mux Channel Data Rate: 1536, synch channel framed;1544 kbps, synch channel
         unframed


Fractional / Full E1 Interface:
         Standard Compliance: CCITT Rec. G.703, G.704, G.732
         Framing: 256N, 256S; with or without CRC-4
         CRC-4 Generation (Switch Selectable)
         Supported Link Speeds: n x 64 kbps up to n = 32 (Switch Selectable)
         Line Code: HDB3
         Impedance: 120 ohms, balanced; 75 ohms, unbalanced (Jumper Selectable)



Moseley 6- Port Mux — FF T1/E1 Module                                       Doc 602-14323-11 Rev.B
Section 3: Installation                                                              Page 2-2


         Jitter Performance: As per ITU-T G.736, ITU-T G.742, ITU-T G.783, ETSI CTR 12/13,
         BAPT 220
         Connector: RJ-45 or BNC with appropriate adaptor
         Transmit Timing: Internal, LBT
         Mux Channel Data Rate: 1984 kbps, synch channel framed; 2048 kbps, synch channel
         unframed
Dual E1 Interface:
         Supported Link Speeds: 2048 kbps
         Mux Channel Data Rate: 2072 kbps, Single Stuff Mode ; 4136 kbps, Dual Stuff Mode
Dual T1 Interface:
         Supported Link Speeds: 1544 kbps
         Mux Channel Data Rate: 1568 kbps, Single Stuff Mode ; 3120 kbps, Dual Stuff Mode




2.2 Block Diagrams




                               Figure 2.2 - T1/E1 Interface Cards




Moseley 6- Port Mux — FF T1/E1 Module                                   Doc 602-14323-11 Rev.B
Section 3: Installation                                                                 Page 3-1




3 Installation
Turn the power off and remove the 6-Port Mux from the chassis.
Plug the board into any available channel on the 6-Port Mux, matching the orientation by noting
the number of pins on each end of the board.
Configure the switches as required (see Section 4, Configuration) and replace the 6-Port Mux into
the chassis.
Connect the appropriate cable and/or adaptor to the same external connector that corresponds to
the channel where the board is installed.
Apply power to the chassis.
Configure the 6-Port Mux for desired operation. (See the 6-Port Mux sections of the manual).




Moseley 6- Port Mux — FF T1/E1 Module                                      Doc 602-14323-11 Rev.B
Section 6: Use of Carrier Card                                                                  Page 2




4 Configuration
Note that this module is used for both E1 and T1 applications. 120 ohm E1 and 100 ohm T1
modes are interchangeable, provided that the user changes the switch settings as well as the 6-
Port Mux configuration. 75 ohm E1 mode can be achieved by using an external balun.


       Main
       LED           Balun Ground Lift              2nd Channel
                     P6                             I/O Expansion
                                                    P10
                                                                             S2   S4 S6




                                                                             S1   S3 S5
         st
       1 Channel            P4, P5, P7, P8          S1, S2, S3, S4, S5, S6
       I/O & LEDs           Impedance Selection     Mode Select




4.1 Switch Settings
4.1.1 E1/T1 Switch Settings
Switch        Name                                Function
Pos.
S1.1-8        Time slots 1-8 selection            ON=Selected
                                                  OFF=not selected
S2.1-8        Time Slots 9-16 selection           ON=Selected
                                                  OFF=not selected
S3.1-8        Time Slots 17-24 selection          ON=Selected
                                                  OFF=not selected
S4.1-8        Time Slots 25-32 selection          ON=Selected
                                                  OFF=not selected [default for T1]
S5.1          E1/T1 Mode                          ON= E1
                                                  OFF= T1
S5.2          Line Coding selection               ON=AMI (T1 Only)
                                                  OFF=B8ZS/HDB3 [default]
S5.3          Frame Type selection                ON= D4 (T1) / CRC Disable (E1)
                                                  OFF= ESF(T1) / CRC Enable (E1) [default]
S5.4          Plesiochronous* Mode Enable         ON= Dual/Single Plesiochronous* Mode
                                                  (Use S6.6 to choose between Dual and Single
                                                  Plesiochronous* Modes) [default]
                                                  OFF=Normal Full/Fractional Mode


Moseley 6- Port Mux — FF T1/E1 Module                                         Doc 602-14323-11 Rev.B
Section 6: Use of Carrier Card                                                            Page 3



Switch    Name                               Function
Pos.
S5.5      Frame Header Selection (6-Port     ON=Unframed (Header Removed) (i.e.1536 kbps for
          Mux Channel)                       Full T1)
                                             OFF=Framed (Header Present) (i.e.1544 kbps for Full
                                             T1) [default]
S5.6-8    T1 Line Length Equalizer           T1 only. Switch bits are shown 8 down to 6.
                                             876
                                             011= 0-133 ft line length, 0.6 dB loss [default]
                                             100= 33-266 ft line length, 1.2 dB loss
                                             101= 266-399 ft line length, 1.8 dB loss
                                             110= 399-533 ft line length, 2.4 dB loss
                                             111= 533-655 ft line length, 3.0 dB loss
S6 1-3    LIU Loopbacks                      LIU Loopbacks. Switch bits are shown 3 down to 1.
                                             321
                                             XX0= Normal Mode [default]
                                             0X1= Remote Loopback
                                             101= Analog Local Loopback
                                             111= Digital Local Loopback
S6.4      Synch Channel Loopback             ON= Mux Sync Channel Remote and Local Loopback
                                             OFF= Normal Mode
S6.5                                         Reserved
S6 6                                         Reserved
S6 7      Dual/Single Plesiochronous* Mode   ON=Single Plesiochronous* Mode
          Select                             OFF=Dual Plesiochronous* Mode [default]
S6.8                                         Reserved



4.2 6-Port Mux Configuration
The required clock settings for the 6-Port Mux are normal transmit and receive clocks. If the
interface is not used in dual stuffing mode, the 6-Port Mux must be configured to receive a clock
from the E1/T1 interface, otherwise the Mux should provide both receive and transmit clocks. The
data rates for the Mux channel are shown in Table 4-1 Intelli-Mux Channel Data Rates and Clock
Configurations


Table 4-1 Intelli-Mux Channel Data Rates and Clock Configurations
               Mode                                       Mux Channel
                                     Clock   Data Rate (kbps)
                                     Mode
Full E1 (Mux Channel Framed)         DTE1    2048
Full E1 (Mux Channel Unframed)       DTE1    1984
Fractional E1                        DTE1    64*N, N is number of Time Slots from 1 to 32
                                             including the header
Full T1 (Mux Channel Framed)         DTE1    1544
Full T1 (Mux Channel Unframed)       DTE1    1536
Fractional T1                        DTE1    64*N + 8, N is number of Time Slots from 1 to 24
Dual E1 (Plesiochronous*)            DCE     4136
Single E1 (Plesiochronous*)          DCE     2072
Dual T1 (Plesiochronous*)            DCE     3120


Moseley 6- Port Mux — FF T1/E1 Module                                     Doc 602-14323-11 Rev.B
Section 6: Use of Carrier Card                                                               Page 4



               Mode                                        Mux Channel
                                    Clock     Data Rate (kbps)
                                    Mode
Single T1 (Plesiochronous*)         DCE       1568
*Plesiochronous = Bit stuffing is used such that synchronous clocks are not required. This is the
preferred mode of operation.




4.3 Jumpers
4.3.1 E1/T1 Impedance Selection Jumper
E1/T1 Impedance Selection         Options                              Description
P4, P5 (Transmit)                 Jumper installed on pins 2 and 3     120ohm E1 / 100ohm T1
                                  Jumper installed on pins 1 and 2     75 Ohm E1
P7, P8 (Receive)                  Jumper installed on pins 2 and 3     120ohm E1 / 100ohm T1
                                  Jumper installed on pins 1 and 2     75 Ohm E1



4.3.2 Balun Ground Lift Jumper
Balun,GND                         Options                            Description
P6                                ON: Pins 3 and 6 of RJ45 are       Note: In order to remove this
                                  grounded [default]                 jumper the line has to be cut
                                  OFF: Pins 3 and 6 are floating.    on the PCB.




Moseley 6- Port Mux — FF T1/E1 Module                                        Doc 602-14323-11 Rev.B
Section 6: Use of Carrier Card                                                               Page 5




4.4 LEDs
4.4.1 T1/E1 Interface LEDs




                      Figure 4.4.1 - Orientation of T1/E1 LEDs on the panel

4.4.1.1       T1/E1 Main LED (next to RJ45)
LED Color                    Meaning                     Notes
GREEN                        Normal Mode                 Normal Operation
YELLOW                       Remote (Yellow) Alarm       Check the cabling, this end transmit side
RED/YELLOW/GREEN             Diagnostics                 Loopback Modes are enabled. Check the
                                                         switches
RED BLINK                    Mux Channel Link Error      Check the 6-Port Mux settings,
                                                         configurations or the link
RED                          Loss of Signal or Loss of   Check cabling, this end receive side
                             Sync                        Check ESF/D4 Settings
OFF                          No power or no firmware     Check board seating



4.4.1.2       T1/E1 RJ45 Yellow LED
LED Color                    Meaning                     Notes
YELLOW                       Normal Mode                 No Errors
YELLOW BLINK                 CRC Error or Bipolar        Check Cabling on this end receive side
                             Violation                   Check AMI/B8ZS Settings
                                                         (When there is a local AMI/B8ZS mismatch,
                                                         T1 Main LED shows alternating RED BLINK
                                                         and continuous RED patterns)
OFF                          No power or no firmware     Check board seating



4.4.1.3       T1/E1 RJ45 Green LED
LED Color                    Meaning                     Notes
GREEN                        Normal Mode                 No AIS Present
GREEN BLINK                  AIS (Blue) Alarm            All ones are being received
OFF                          No power or no firmware     Check board seating




Moseley 6- Port Mux — FF T1/E1 Module                                         Doc 602-14323-11 Rev.B
Section 6: Use of Carrier Card                                                               Page 5-1




5 Connectors and Cabling
                       8 7 6 5 4 3 2 1



                                                            1 2 3 4 5 6 7 8




                     RJ-45 Plug, End View              RJ-45 Jack, Looking Inside

                                 Figure 5.1 - RJ45/RJ48 Connector Pins

Please note that wire colors vary depending on which standard is being used. The important
thing is to pay attention to the pairs of pins (these are all differential signals) that get wired
together.



5.1 T1 Connector
A T1 (or DS1) circuit is used to convey up to 1536kb/s of digital information, typically measured in
64kb/s chunks, often called DS0s. There are up to 24 DS0s in a DS1 or T1 circuit. When you
include framing, the aggregate rate is 1544kb/s.
The standard pin out of a T1 TELCO User connector is




                                  RJ45 Pin    Function        Bantam
                                     1       RX Ring (-)       Ring
                                     2       RX Tip (+)         Tip
                                     3       not used
                                     4       TX Ring (-)        Ring
                                     5       TX Tip (+)         Tip
                                     6       not used
                                     7       not used
                                     8       not used

                * Bantam connectors are found on some equipment instead of the RJ45.
                                     Figure 5.1.1 - T1 Pin Connections



Moseley 6- Port Mux — FF T1/E1 Module                                          Doc 602-14323-11 Rev.B
Section 6: Use of Carrier Card                                                             Page 5-2


A TELCO jack usually has the functions reversed, i.e. RX & TX are swapped, so that a straight-
through cable can be used to connect the CSU/DSU/TSU jack to the TELCO jack.
To discern which connection you have, use a wide-band oscilloscope or DVM to measure across
the TX and RX pairs. The TX pairs should have activity and the RX pairs should not. Note: Many
T1 jacks provided by the phone company are terminated with a “smart jack”. This jack has an
automatic loopback feature built in, so that if no connector is inserted, the TX pair is connected to
the RX pair. The phone company uses this feature to test the line from the CO before turning it
over to you. A common mistake during installation is to reverse the TX & RX pairs, so it is best to
insert a plug/cable into the jack before you do your testing.
To connect two T1 jacks that have the same pin-out, you will need a T1 crossover cable, which
has these connections:

                                   Cable End A    Cable End B
                                    RJ45 Pin       RJ45 Pin
                                        1              4
                                        2              5
                                        4              1
                                        5              2
                                  Figure 5.1.2 - T1 Cross-over Cable

A T1 loop-back connector will have these connections all on the same jack or plug:

                                           RJ45 Pins
                                              1-4
                                              2-5
                                 Figure 5.1.3 - T1 Loopback connector




Moseley 6- Port Mux — FF T1/E1 Module                                        Doc 602-14323-11 Rev.B

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:11
posted:8/31/2011
language:English
pages:13