Page 752 of 910 Voice Gateway Media Card maintenance
553-3001-365 Standard 4.00 August 2005

Lamp Audit and Keep Alive functions

The Lamp Audit function provides a continuous source of heartbeat messages
to ensure the IP Phone is powered and the IP connection is alive. Since there
is a reliable UDP connection from the core through to the IP Phones, any
failure of the IP Phone, the Voice Gateway Media Card, or the IP connection
is detected.
Network Signaling Diagnostics
Network Signaling Diagnostics can be run as part of the midnight routines
defined in LD 30. Fore more information, refer to Software Input/Output:
Maintenance (553-3001-511).
IP Phone Keep Alive
When the Voice Gateway Media Card detects that the IP Phone has been
disconnected, the Voice Gateway Media Card logs the event and sends an
UNREGISTER message to the system for that IP Phone.
Card or ELAN subnet failure
When the Call Server detects a loss of connection with the Voice Gateway
Media Card, the Call Server logs a message and unregisters all the IP Phones
and gateway channels associated with that Voice Gateway Media Card.

Maintenance audit

IP Line 4.5 provides a background audit that watches for tasks that go into a
suspended state. Under normal operation, a task should not go into a
suspended state. However, if it occurs, the card's processing is affected.
tpsARTraceHelp Displays a list of all CLIs used for tracing tpsAR
protocol messages, including usage and
parameters.
X
Table 104
Protocol trace tool CLI commands for the NCS (Part 3 of 3)
CLI Command Description
Signaling
Server