Instruction manual

Page 1214 of 3156 CTI Trunk Monitoring and Control
553-3001-306 Standard 10.00 January 2002
With Trunk Monitoring, when the AML interface is down, USM messages
are not sent. No error messages, other than general maintenance messages,
are generated for this condition.
The Trunk Monitoring feature mainly monitors the events of far-end answer
and far-end disconnect. It is not intended to be used for monitoring the trunk
state transition from idle to active or vice versa.
Trunk status USM messages are sent only when trunk status is detected. That
is, when the trunk is equipped with Answer Supervision and Disconnect
Supervision.
Trunk Call Disconnect functions on a trunk that is involved in an established
two-party call or multi-party conference call, and in cases where the trunk is
either active or on hold on an established call or a call which is in a half-
disconnect state, due to far-end disconnect control.
The format of the CALLDIS message for disconnecting a trunk is the same
as that for disconnecting a set.
When Trunk Call Disconnect fails, the call is not disconnected, and a
CALLDIS response message is sent to the AML interface.
If more than one failure condition occurs for Trunk Call Disconnect, only one
CALLDIS message is sent.
With Warning Tone functionality, when the warning tone fails, a tone is not
provided, and a CRS message is sent to the AML interface.
For the Warning Tone functionality, if more than one failure condition
occurs, only one Connection Request Response (CRS) message is sent.
Feature interactions
Call Detail Records
Trunk Call Disconnect, performed via the AML interface, generates the same
Call Detail Records (CDR) as regular call disconnect.