Up-Grading Your DXPT1 Board For ISDN–PRI Support
Up-grading existing revision B or later DXPT1 boards for ISDN–PRI service consists of adding a DXPRI card to
the T1 board, and changing the board’s chip firmware. When you do this, the T1 board/DXPRI card combination
with the new firmware becomes a DXPT1–PRI board.
If you add the ISDN–PRI firmware to an existing T1 board but do not install the DXPRI card, you create a NFAS
(Network Facility Associated Signalling) DXPT1–NFAS board. The NFAS boards are slaves to the master
DXPT1–PRI board in multiboard installations.
Installing The DXPRI Card
1. Be sure you are standing on the conductive mat that you have placed in front of the cabinet area and grounded
to a good earth ground. (The third wire ground of the AC power line is an acceptable grounding point if the
AC wall jack is properly grounded.) The grounded conductive mat provides a safe static electric discharge
path.
2. Install your static discharge wrist strap on your bare wrist; adjust it for a snug fit. Be sure that the strap is not
isolated by clothing. Connect the wrist strap cord between the wrist strap and an AC or earth ground.
NOTE: With the common equipment in the installed position, the ground lug on the side of the cabinet is an
appropriate grounding point since it should have a heavy ground wire connected between it and a good
earth ground.
3. Normally you should disconnect the AC power cord from the AC outlet and disconnect the optional battery
back-up assembly from the digital communications system’s main cabinet power supply; however, when
necessary, you can remove a DXPT1 board from an operating system. If you must do this, connect one end of
a standard telephone handset coil cord to the pre-charge port on the power supply. During step 5, you will
connect the other end of this coil cord to the pre-charge jack on the T1 board.
4. Loosen the retaining hardware and lift the front panel away from the common equipment cabinet.
5. Locate the DXPT1 board, and if you are removing the board from an operating system, connect the free end
of the pre-charge cord that you installed in step 3 to the pre-charge jack on the line board.
6. Loosen any retaining hardware, use the extractor levers to disconnect the board from the connector on
cabinet’s backplane, and slide the board free of the board cage. If you connected a handset cord between the
pre-charge port on DXP Plus power supply and the jack on board (as directed in step 4), disconnect it after
removing the board.
7. Place the board in a static protection bag for safe keeping, and transport it to a static safe work area.
8. At the static safe work area, with your wrist strap in place, remove the DXPT1 board and the DXPRI card
from their static protection bags.
7. Referring to the illustrations on the next page, orient the DXPT1 board and the DXPRI card, and attach them
with the supplied hardware.
IMI89–255
Installing And Programming The DXPRI Card
40 – Up-Grading Your DXPT1 Board For ISDN–PRI Support
Содержание DXP Plus Series
Страница 1: ...Digital Communications System R ...
Страница 363: ...Automatic Call Distributor Technical Manual R QuickQ DXP ...
Страница 424: ...Automatic Call Distributor System Manager s Guide R QuickQ DXP ...
Страница 500: ...Wrap up Time 1 6 Wrapping Up A Call 4 3 Z Zoom Box A 2 GCA70 271 Index I 3 ...
Страница 628: ...Interconnecting The VMI X Installing And Programming For ExecuMail IMI89 206 Installing And Programming For ExecuMail 5 ...
Страница 677: ...Connecting The Equipment Installing And Programming The OPX X IMI89 209 Installing The OPX X 7 ...
Страница 728: ...DP I I I I and FX Series Digital Communications Systems Understanding The Visual Man Machine Interface COMDlA ...
Страница 1112: ...9 08 8 90 1 13 4 78 3 94 UNIS029 TAB003 PLS page 6 GCA40 130 DXP Plus General Description 11B Telephone Features ...