Loop-Start Reliable Disconnect - Lucent Technologies MERLIN LEGEND Release 7.0 System Planning Manual

MERLIN LEGEND Communications System Release 7.0
System Planning 555-670-112
3 Lines/Trunks
Selecting Line/Trunk Options
Form 2c, System Numbering: Line/Trunk Jacks
Form 3a, Incoming Trunks: Remote Access
Form 3b, Incoming Trunks: DS1 Connectivity (100D Module)
Form 3c, Incoming Trunks: Tie
Form 3d, Incoming Trunks: DID
Form 3i, Incoming Trunks: BRI Options (800 NI-BRI module)

Loop-Start Reliable Disconnect

Disconnect signals on incoming calls on loop-start trunks are classified as one of
the following:
Reliable. A disconnect signal is sent to the system by the local telephone
company shortly after a caller hangs up. Loop-start trunks must be reliable
for remote call forwarding and trunk-to-trunk transfer. Also, reliable
disconnect is strongly recommended for remote call transfers, and VMSs
such as MERLIN LEGEND Mail.
Unreliable. A disconnect signal is not sent by the local telephone company
on every call.
NOTE:
If the local telephone company uses a short hold disconnect interval,
do not specify a reliable disconnect signal. Also, to ensure proper
voice messaging operation, and for private network systems, the
system must have ground-start or loop-start trunks with reliable
disconnect.
3
Issue 1
April 1999
3-12