Nortel Networks Circuit Card - Manual (Page 91)

Acceptance tests Page 91 of 906
Circuit Card Description and Installation
4 Test the conference loop for channel, group, and switching faults:
CNFC loop
If the conference loop passes the tests, the output is OK.
If the system response is other than OK, see the Software Input/Output:
Administration (553-3001-311) to analyze the messages.
5 Prepare the system for a manual conference call on a specified loop:
CNFC MAN loop c
Where “c” is the manual conference group (1-15)
A manual conference test is performed by stepping through conference
channels and groups, listening for noise that indicates a faulty card.
The manual conference test can be performed through a system terminal
or BCS maintenance telephone. If commands are entered from a
maintenance telephone, this telephone automatically becomes part of the
manual conference call.
Only one manual conference call is allowed at one time. A manual
conference consists of only two telephones, where one telephone acts as
a signal source while the other acts as a listening monitor.
After you enter the CNFC command, any two telephones (one may
already be the maintenance telephone) dialing the special service prefix
code (SPRE) and the digits 93 will enter the manual conference call. The
prime directory number (PDN) indicator, if equipped, will light on each
telephone.
Going on-hook takes the telephone out of the manual conference call, and
the test must be restarted.
See LD 38 in the Software Input/Output: Administration (553-3001-311)
for more detailed information on using this command.
6 Test various channels and conference groups audibly with the command
CNFC STEP
When stepping through channels and groups, a clicking followed by
silence is normal. Any distortion or other noises indicates a faulty card.
Once the CNFC STEP command has been entered, entering C on the
system terminal or maintenance telephone steps through the conference
channels. Entering G steps through the conference groups. There are 15
channels per group and 15 groups per conference card.
Entering an asterisk (*) and END stops the test.