Viewing G700 Synchronization Sources - Avaya MCC1 Maintenance Procedures

Control of which reference source is the "Active" source is accomplished by issuing the command set
sync interface {primary | secondary}. If "secondary" is chosen, then the secondary source becomes
"Active", and the primary becomes "standby", and, in addition, fallback to the primary source will not
occur if or when it becomes available.
If neither primary nor secondary sources are identified, then the local clock becomes "Active".
Use the following procedure:
1 Login at the Welcome to Media Gateway Server menu.
You are now logged-in at the Supervisor level on the Media Gateway Processor. The prompt
appears as MG-mmm-1(super)>, where mmm is the administered G700 Media Gateway number
in the network.
2 Type configure to access the configuration prompt.
The prompt will change to indicate that you are in configuration mode. In the configuration mode,
you may use the set commands.
3 At the prompt, type set sync interface primary <mmid>.
The MM710 Media Module is now configured as the primary clock synchronization source for
the G700 Media Gateway.
4 At the prompt, type set syn sou pri.
5 If the G700 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 status of that
module regarding synchronization.
• If the YELLOW ACT LED is solidly on or off, it has
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 G700 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:

Viewing G700 synchronization sources

The following tables illustrate example locations of the clock synchronization sources:
NOTE:
Unless otherwise indicated, the following commands issue from the G700 MGP CLI.
Maintenance Procedures
December 2003
— 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.
Additional maintenance procedures
Setting G700 synchronization
NOT
been defined as a
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