Nt8D17 Conference/Tds Card - Nortel Meridian 1 Replacement Manual

NT8D17 Conference/TDS Card

The conference/TDS card provides conference functions on one loop and
both tone and digit switch (TDS) and multifrequency sender (MFS) functions
on a second loop. Use this procedure to replace a conference/TDS card.
See the X11 Administration (553-3001-311) for a description of all
maintenance commands, and the X11 System Messages Guide
(553-3001-411) for interpreting system messages.
Module covers are not hinged; do not let go of the cover. Lift the cover
away from the module and set it out of your work area.
Removing equipment
1 Software disable the conference/TDS card:
LD 34 or LD 38 or LD 46
DISX loop
Note: You must use the command DISX to disable both loops and all
hardware functions. Disabling loops with the command DISL prevents
software from using the loops but does not disable the card.
2 Set the ENB/DIS switch to DIS.
3 Unhook the locking devices on the card; pull it out of the card cage.
Installing equipment
1 Set the ENB/DIS switch to DIS on the replacement card.
2 Set option switches and jumpers on the replacement card the same as on
the card you removed. If there is a vintage change, be sure to check
Circuit Card: Installation and Testing (553-3001-211) for any
differences.
Replacing equipment
WARNING
In LD 38 "loop" is the conference loop that is the
odd loop of the conference/TDS loop pair. In LD 34
and LD 46 "loop" is the TDS/MFS loop that is the
even loop of the conference/TDS loop pair.
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Hardware replacement