Instruction manual

CTI Trunk Monitoring and Control Page 1213 of 3156
Features and Services
• DASS
• DPNSS
• EuroISDN ETSI
• Numeris
• Swissnet
• 1TR6
• MCDN
• UK Analog
The design and operation of the above trunk signaling protocols are not
modified by the CTI Trunk Monitoring and Control feature.
Ground Start Analog and ISDN Basic Rate Interface (BRI) trunks are not
supported for CTI Trunk Monitoring and Control.
The CTI Trunk Monitoring and Control functionalities are supported on the
LAPB AML interface only. They are not supported on the TCP/IP AML
interface.
This feature modifies the Connection Request (CON), Connection Request
Response (CRS), Unsolicited Status Message (USM), Call Disconnect
Request (CALLDIS), and Present Call Indication (PCI) AML messages.
Configuration procedures for CTI Trunk Monitoring and Control are similar
to those for Set Monitoring and Control.
For CTI Trunk Monitoring and Control, the Associated trunk for CTI Trunk
Monitoring and Control (AST) prompt must be defined in Overlay 14. This
prompt designates a trunk as an Associated Trunk. Also, the Event Group for
USM messages (IAPG) prompt must be configured in Overlay 14. This
prompt assigns an event group to a specific trunk, in order to control the USM
messages for Trunk Monitoring.
If a Customized Event Group is needed, the GPXX prompt must be defined
in Overlay 15.
The existing USM message format is used for the trunk status USM
messages.