ISDN BRI Dial Backup Module DBM Installation Instructions by nikeborome

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ISDN BRI Dial Backup Module (DBM)
Installation Instructions
Document Number 9000-A2-GN19-30
Feature Number 9098-F1-870
February 1998



Before You Begin
Make sure you have:
- Ordered ISDN service, and it is installed.

- A small, flat-head and a small, Phillips screwdriver.

- A small, flat-head screwdriver, if upgrading a 1-slot access unit.

- A Phillips-head screwdriver, if upgrading a multi-slot housed access unit.

- For the FrameSaver 9620, verify that the software revision is at least 02.xx.xx.
    For the FrameSaver 9120, verify that the software revision is 01.01.03, or greater.
Refer to the 1-Slot Assembled Access Unit, Installation Instructions (Document
No. 9000-A2-GN10) if this is an initial installation and not a DBM upgrade.
- If installing the NAM/DBM in a 1-slot (standalone) housing, refer to the 1-Slot
    Assembled Access Unit, Installation Instructions.
- If installing the NAM/DBM in a FrameSaver 9000 Series Access Carrier, refer to
    the FrameSaver 9000 Series Access Carrier, Installation Instructions (Document
    No. 9000-A2-GN1D).


Package Checklist
Verify that your package contains the following:
- Dial Backup Module (DBM)

- Two standoff posts, four washers, and four Phillips-head screws

- 14 ′ RJ49C ISDN-U cable

- Warranty card

- Safety and Regulatory, Warranty and Service Information
    (Document No. 9621-A2-GX40 or 9121-A2-GX40)




                                           1
Safety Instructions
Please read the EMI warnings and Important Safety Instructions that come with this
card.
Before upgrading a NAM with the DBM feature, or replacing either, locate or record the
access unit’s configuration options, or transfer the configuration using the FTP (file
transfer protocol) feature. This may be useful when setting up again, verifying
operation, or troubleshooting.

 ! HANDLING PRECAUTIONS FOR STATIC-SENSITIVE DEVICES
    This product is designed to protect sensitive components from
    damage due to electrostatic discharge (ESD) during normal
    operation. When performing installation procedures,
    however, take proper static control precautions to
    prevent damage to equipment. If you are not sure
    of the proper static control precautions, contact
    your nearest sales or service representative.                                496-15149




Removing the NAM from a 1-Slot Housing
 1. Disconnect the power cord/transformer, first from the power outlet, then from the
    rear of the access unit.
 2. Disconnect the other cables.
 3. Open the 1-slot housing using a small flat-head screwdriver. Gently pry open the
    housing at each of the four connecting tab points. However, if the screwdriver is
    too big or you do not open carefully, you could cause damage to the housing.




                                                          496-15043




                                           2
4. Remove the cover.
5. Lift the NAM and the integrated I/O card/ backplane (rear panel) from the base.

                                                       Integrated
                                                       I/O Card/Backplane
      NAM




                                                Base
                                                          496-15044




Removing the NAM from an Access Carrier
1. Unscrew the captive screws from the ejector latches on front of the carrier.
2. Press open the ejector latches to disengage the card.
3. Supporting the card by its edges, pull straight out until the card clears the carrier.




              Ejector
              Latches

                     Front View           97-15754




                                            3
Removing a DBM from the NAM
Follow this procedure if transferring a DBM to a replacement NAM.
 1. Lay the NAM and DBM on an electrostatic discharge-protective work surface,
    component side up, with the card connectors on the left-hand side.
 2. Remove the two screws and two washers that hold the DBM to the standoff posts
    and NAM, and set them aside.

                                    Screws/Washers

                Pins
                                                  DBM




         Standoff
           Post

     Connectors



                                                               Standoff
                                                                 Post




                                         Screws/Washers        97-15228-01



 3. Turn the NAM over and remove the screws and washers on the underside of the
    NAM, and set the standoff posts and screws aside.
 4. Turn the NAM over again so the DBM is on top.
 5. Work the DBM away from the NAM by very carefully and gently pulling and rocking
    the DBM connectors away from the NAM connectors. Work first from one side,
    then the other until the DBM is free. Be careful not to bend any pins.
 6. Reinstall the DBM on a replacement NAM.




                                          4
Installing a DBM on the NAM
1. Lay the NAM on an electrostatic discharge-protective work surface, component
   side up, with the card connectors on the left-hand side.
2. Remove the DBM, standoff posts, screws and washers from the shipping box.
3. Position a standoff post at one of the two holes in the NAM, put a screw through a
   washer, insert a screw from the underside of the NAM, and tighten the screw to
   hold the standoff post in place.
4. Install the second standoff post in the same way.

                                    Screws/Washers

               Pins
                                                   DBM




        Standoff
          Post

    Connectors



                                                                Standoff
                                                                  Post




                                         Screws/Washers         97-15228-01



5. Hold the DBM, pin side down, so the two sets of pins are aligned with their
   respective connectors. Carefully match the pins to the holes of the two connectors.
6. Press the pins and connectors together until both pin sets are firmly seated.
   Be careful not to force or bend any pins.
7. Insert the remaining screws and washers into the standoff post holes on the DBM,
   and tighten.




                                          5
Reinstalling the NAM in a 1-Slot Housing
 1. Reinstall the NAM in its housing, snapping the cover and base together at each of
    the four connecting tab points.
 2. Reconnect the COM port, DTE ports, and network cables (DDS for the 9620/9621,
    and T1 and DSX-1 for the 9120/9121).
 3. Install the ISDN-U cable.


Reinstalling the NAM in an Access Carrier
 1. Align the replacement card with the upper and lower tracks of the slot. Slide
    forward until the NAM seats. Be careful not to force or bend any pins.
 2. Close both the upper and lower ejector latches on the carrier to lock in place, then
    tighten the captive screws.
 3. Install the ISDN-U cable.


Installing the ISDN-U Cable
1. Insert the 8-pin connector on the ISDN-U cable into the BKP (backup) or DBM
   interface. (The Model 9620/9621 is labeled BKP, while the Model 9120/9121 is
   labeled DBM.)
2. Insert the other end of the cable into the ISDN service RJ49C jack.
3. Reconnect the power cord, first to the rear of the access unit, then to the power
   outlet.




                                                   RT 2         NET    BKP



                                                                             (9 6 2 0 /9 6 2 1 )




                   COM         PORT 1   PORT 2            NET    DBM

                                                                                                    R J4 9 C
                                        D S X -1
                  POW ER                                                                             Ja ck


      (9 1 2 0/9121 S how n)
                                                                                                   97-15494




                                                          6
        T1
             NA
               M
         NE
           T



                        NET
RJ49C
 Jack    DB
                        DBM
           M




                        DSX
         DS
           X




                        Port 1

        PO
          RT
               1




                        Port 2
        PO
          RT
               2



         CO
                        COM
           M




                   97-15751a




                               7
Verification Checklist/Verifying Operation
1. Set the ISDN BRI DBM configuration options (Main Menu → Configuration →
   ISDN BRI DBM).
   Refer to Chapter 4, Setting Up, of the Technical Reference (Document
   No. 9621-A2-GH30 or 9121-A2-GH30) for configuration and ISDN call assistance.
2. Go to the Health and Status screen to see the status of the DBM
   (Main Menu → Status → System and Test Status).


    If . . .                     Then . . .
    DBM Card Failed              DBM circuit card is not operational. Return the
    Health and Status message    DBM to your sales representative.
    ISDN Network Failed          ISDN network has failed and the call cannot be
    Health and Status message    completed at this time.


   Refer to Chapter 4, Displaying System Information, of the User’s Guide (Document
   No. 9621-A2-GB20 or 9121-A2-GB20) for additional status information.


Technical Specifications

Specification                   Criteria
Weight                          0.27 lbs. ( 0.12 kg )
                                4.3 oz. (122 grams)
Standards Compliance            ANSI T1.601 – 1992 (physical layer)
                                AT&T Document 235-900-311, Issue 1.01 –
                                March 1989
                                Bellcore SR-NWT-001937, Issue 1 – February 1991
                                Bellcore SR-NWT-002397, Issue 1 – June 1993
                                ITU Q.921 – 1992 (link layer)
                                ITU Q.931 – 1993 (network layer)
                                Northern Telecom NIS-S208-4 – October 1988
                                TR-TSY-00860, ISDN Calling Number Identification
                                Services – February 1989, and
                                Supplement – June 1990
Switch Compatibility            AT&T 5ESS
                                National ISDN-1 (NI-1)
                                National ISDN-2 (NI-2)
                                Northern Telecom DMS-100




                                           8
Specification                Criteria
BKP/DBM                      ISDN BRI U-interface: one 8-position modular
Interface/Connector          keyed USOC RJ49C jack
Data rates                   56 kbps and 64 kbps
Services supported           2-Wire BRI ISDN
Switched Network Interface   One USOC RJ49C 8-pole keyed modular plug and
                             jack, specified in ISO/ IEC 8877
Transmit Interface
Signal Level                 13.5 dBm nominal over frequency band,
                             0 Hz – 80 kHz
Impedance                    135 Ω
Receive Interface
Dynamic Range                Operates on 2-wire loops,
                             defined in ANSI T1.601-1992
Impedance                    135 Ω
Modulation and Frequency     2B1Q line coding with 4-level amplitude modulation
                             (PAM) at 80K baud
Channel Equalization
Receiver                     Automatic adaptive equalizer with echo cancellation
Power Consumption            60 mA at 15 Vdc
                             Average power .9w




                                        9
Faceplates and LEDs
The faceplates below show the FrameSaver 9620 frame relay and FrameSaver 9120
T1 frame relay access unit faceplates.


                                                               9621




                                                                                                         S
                                                                                                         N

                                                                                                                2
                                                                                                       F/
                                                                                               S



                                                                                                             /P



                                                                                                                         XD
                                                                       M




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                                                                                                                     D




                                                                                                                                        TS
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                                                                 K



                                                                           TS

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                                                                                                                    TX
                                                                      AL




                                                                                                         P1
                                                                O




                                                                                           O

                                                                                                   O
                                                                                     D




                                                                                                                         R

                                                                                                                              D

                                                                                                                                       C
                                                                                                                                       496-14957
                T




                                T




                                             T




                                                           T

                                                               9121
                U




                                U




                                         U




                                                       U
     IN




                     IN




                                    IN




                                                  IN
            O




                            O




                                         O




                                                       O




                                                                                                                                            K
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                                                                                                    M




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                                                                       M




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                                                                                       G




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                                                                           TS




                                                                                                   AL




                                                                                                                         AL
                                                                      AL




                                                                                                                                       2–
                                                                                                                              1–
                                                                                     SI




                                                                                                         SI
                                                                                           O




                                                                                                                O
                                                                O




          NET             DSX       NET MON       DSX MON                             NETWORK                   DSX            PORT

                                                                                                                                       97-15315



The access unit’s faceplate includes 12 LEDs ( light-emitting diodes) that provide status
on the access unit, its network interface, and the DTE interfaces.
See the BKP (backup) and ALM (alarm) LEDs when verifying operation of the DBM.
Refer to Chapter 5, Maintenance and Troubleshooting, of the User’s Guide for more
information about the LEDs.


Label               Indication                   Color          What It Means
OK                  Power and                    Green          ON – Access unit has power and is
                    Operational                                      operational.
                    Status
                                                                OFF – Access unit is in a power-up
                                                                      self-test, or there is a failure.
                                                                Blinking ON and OFF ( Rate: 1 Hz ) –
                                                                         Software is being downloaded.

ALM                 Operational                  Red            ON – Access unit has just been reset, or
                    Alarm ( Fail )                                   an error or fault has been detected.
                                                                OFF – No failures have been detected.

TST                 Test Mode                    Yellow         ON – Loopback or test pattern in
                                                                     progress, initiated locally, remotely,
                                                                     or from the network.
                                                                OFF – No tests are active.




                                                                10
Label         Indication          Color     What It Means
BKP 1         Backup             Yellow     ON – Access unit is in Backup mode; that
                                                 is, the backup link has been
                                                 established, and backup is in
                                                 progress through the specified
                                                 Alternate Destination Link.
                                            OFF – Access unit is not in Backup mode;
                                                  that is, unit is idle, or is originating
                                                  or answering a backup call.
                                            Blinking ON and OFF ( Rate: 1 Hz ) –
                                                     Alternate Destination Link is being
                                                     established, but no data has been
                                                     passed.
1   The BKP LED indicates backup for an external backup device, as well as an ISDN BRI DBM.




BKP or DBM Port/Interface Pin Assignments
Function                                              Circuit                      Pin #
Transmit/Receive ring to/from the local loop          R/R1                         4
Transmit/Receive tip to/from the local loop           T/T1                         5




                                            11

								
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