MERLIN LEGEND Communications System Release 6.1
System Programming Guide
555-661-111
Issue 1
August 1998
Programming Procedures
Page 3-61Lines and Trunks
3
Console/Display Instructions Additional Information PC
! Enter the second dial tone timer
(
nnnn
= 0 to 5,000 ms, in increments of 200 ms).
Dial or type [
nnnn
]. Ã
! Save your entry.
Select
(QWHU.
! Return to the System Programming menu.
Select
([LW.
Disconnect Signaling Reliability 3
Use this procedure to classify the disconnect signal sent by the central office on
loop-start trunks as one of the following:
■ Reliable. Signal sent within a short time.
■ Unreliable. Signal may not be provided.
!
SECURITY ALERT:
Toll fraud can occur if you have loop-start trunks with unreliable disconnect.
In this situation, if someone calls you and you hang up, the CO could send
dial tone before the caller hangs up, allowing the caller to place another call
as if it originated at your company.
The setting selected applies to all trunks in the system because trunks cannot be
programmed individually. The reliable/unreliable setting does not apply to loop-
start trunks emulated on a T1 facility. If you specify a reliable disconnect for trunks
programmed with a short hold disconnect interval (see “Hold Disconnect Interval”
on page 3–67), active calls, as well as trunks on hold, may be disconnected. For
more information about reliable and unreliable disconnect and its implications, see
the
Feature Reference.
NOTE:NOTE:NOTE:
Certain features (Remote Call Forwarding and Transfer to outside
numbers), applications (MERLIN LEGEND Mail, Messaging 2000, and
Intuity AUDIX), and private network systems (Release 6.0 and later), are
not recommended with loop-start trunks. See “Hold Disconnect Interval” on
page 3–67.
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