Viewing G350 Sync Sources - Avaya G250 Maintenance Manual

If the Avaya G350 Media Gateway contains a second MM710 media module, type set sync
interface secondary. If, for any reason, the primary MM710 media module cannot function
as the clock synchronization source, the system defaults to the secondary MM710 media
module for that function. If neither MM710 media module can function as clock synchronization
source, the system defaults to the local clock running on the S8300 Media Server.
The YELLOW ACT LED on the front of the MM710 media module can tell you the
synchronization status of that module.
If the YELLOW ACT LED is solidly on or off, it has NOT been defined as a synchronization
●
source. If it is on, one or more channels is active. If it is an ISDN facility, the D-channel will
count as an active channel and will cause the YELLOW ACT LED to be on.
When the MM710 is driving a clock sync source line to the G350 main clock, the YELLOW
●
ACT LED does not indicate port activity, but instead indicates that the MM710 is the sync
source by flashing with a regular 3-second period:
- It is on for 2.8 seconds and flashes off for 200 milliseconds if it has been specified as a
sync source and is receiving a signal that meets minimum requirements for the interface.
- If it has been specified as a sync source and is not receiving a signal, or is receiving a
signal that does not meet minimum requirements for the interface, then the YELLOW
ACT LED will be off for 2.8 seconds and flash on for 200 milliseconds.

Viewing G350 sync sources

The following tables illustrate example configurations of the clock synchronization sources:
Note:
Unless otherwise indicated, the following commands are sent from the G350
Note:
Media Gateway CLI.
Table 7: G350-001# show sync timing
SOURCE
Primary
Secondary
Local
Comment: No failures, SIG GREEN on and ACT on when trunk is seized
MM STATUS
Not Configured
Not Configured
V0 Active
Setting G350 synchronization
FAILURE
None
Issue 1.1 June 2005 39