Instruction manual

Page 1934 of 3156 Loop Start Supervisory Trunks (Incoming Calls)
553-3001-306 Standard 10.00 January 2002
Operating parameters
The Central Office cannot disconnect until one second after it is answered by
an attendant or station.
This feature is not compatible with the Japan Trunk feature, on a trunk basis.
Polarity detection is disabled during outpulsing. Therefore, polarity state
changes of less than 200 milliseconds are ignored after trunk seizure, as are
power interruptions of unlimited duration.
If an Meridian 1 station goes on-hook first, a far-end disconnection cannot be
detected.
Feature interactions
Automatic Call Distribution
Loop Start trunks with Both Way Supervisory (BST) Class of Service may be
used to auto terminate on an Automatic Call Distribution (ACD) DN. Caller
disconnection can be detected on trunks designated as BST and removed from
the ACD queue.
Call Modification
If an incoming call that is transferred by the attendant to a station is in the
ringing state, and the far-end (the Central Office) disconnects, the trunk is
released and the ringing stops.
Integrated Voice Messaging Service and Integrated Messaging
Service
Integrated Voice Messaging Service (IVMS) and Integrated Messaging
Service (IMS) use ACD queues, therefore trunks designated BST may the
used for these services.
Feature packaging
International Supplementary Features (SUPP) package 131.