AT&T MERLIN LEGEND Release 2.0 System Programming Manual page 153

Programming Procedures
Disconnect Signaling Reliability
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
The setting selected applies to all trunks in the system; trunks cannot be
programmed individually. The reliable/unreliable setting does not apply to
ground-start trunks emulated on a T1 facility. If you specify a reliable
disconnect for trunks programmed with a short hold disconnect interval, active
calls as well as trunks on hold may be disconnected. For more information
about reliable and unreliable disconnect and its implications, see Feature
Reference.
NOTE:
Certain features (Remote Call Forwarding and call transfer to outside
numbers) and applications (CMS, AUDIX Voice Power, and MERLIN MAIL®)
are not recommended with loop-start trunks. See "Hold Disconnect
Interval. "
Entering Programming
Console: Select Menu
PC/SPM: Type SPM
Exiting Without Changes
To exit from any screen without making changes, select Exit on the console or
press [F5] on the PC before saving your entry or menu selection.
3-62 Disconnect Signaling Reliability
Sys Program Exit
[F1]
press any key
[F5]