AT&T MERLIN LEGEND Communications System PBX System Planning Manual page 64

Trunks
Hold Disconnect
See "Loop-Start Disconnect Reliability
in this chapter.
QCC Operator Receiving Calls
See *Tie Trunks" in this chapter for
information on automatic-in tie trunks.
Hold Disconnect allows you to set the number of milliseconds (ins) before the
trunk is released when a caller on hold hangs up and abandons the call. Local
telephone companies use either a long (450 ms) or short (50 ms) interval. The
factory setting for the system is the long interval since it is the interval used by
most telephone companies.
Check with your local telephone company for the disconnect interval used.
If your local telephone company uses the short interval, you must change the
factory setting. If you don't change the setting, when a caller waiting on hold
hangs up, the trunk is not released.
Planning Form Instructions
In the "Short Hold Disconnect Interval" column on Form 2c, check "Yes" next
to any trunks that you want to change from the long (450 ms) interval to the
short (50 ms) interval.
Note: Be sure you have checked "No" for "Loop-Start Reliable Disconnect" if
a
your local telephone company uses a short Hold Disconnect interval.
Use these instructions only if the system has one or more QCCs.
Assigning the QCC operator to receive calls on each trunk determines, first, if
incoming calls on each trunk ring into the QCC queue and, second, which QCC
operator position answers the calls.
The factory setting for all trunks is that no QCC operator is assigned to receive
calls. This means that the trunk does not ring into the QCC queue.
Decide if the QCC operator should receive calls for each ground-start,
loop-start, and automatic-in tie trunk connected to the system:
If you do not want the calls on a particular trunk to ring into the QCC queue,
do not assign a QCC operator to receive the calls. This is appropriate for
calls on trunks used as personal lines, those that are dedicated to incoming
calls for calling groups, and those that are assigned to direct-line consoles
(DLCs).
If you want calls on a particular trunk to ring into the QCC queue, decide
which operator position should receive the calls. You can specify that calls
on each trunk be directed to one or more QCC operator positions or to all
operator positions. This is useful when you want operators to handle only
specific call types. For example, you might want one operator to handle all
incoming customer calls and another to handle calls from sources, such as
suppliers or other branches of your business.
Trunk Options 3-9