Avaya G430, Руководство пользователя

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Chapter 22: Synchronization
Synchronization
If the Branch Gateway contains an MM710 T1/E1 media module, it is advisable to define the
MM710 as the primary synchronization source for the Branch Gateway. In so doing, clock
synchronization signals from the Central Office (CO) are used by the MM710 to synchronize
all operations of the Branch Gateway. ISDN BRI trunks Media Modules (MM720, MM722) can
also use signals from the Central Office, to synchronize all operations of the Branch Gateway.
If MM710, MM720 and MM722 are not present, it is not necessary to set synchronization.
Where traditional synchronization is not available, you can use Clock Synchronization over IP
(CSoIP). CSoIP to provide timing information across IP networks. CSoIP is also needed to
support TDM-based devices, such as an H.320 video device, that customers would like to
retain and transmit within an IP infrastructure. Use the Communication Manager's SAT
Administration forms to administer Synchronization over IP.
Related topics:
Defining a stratum clock source on page 605
Setting the synchronization source on page 606
Disassociating a clock source on page 607
Enabling and disabling automatic failover and failback on page 607
Synchronization status on page 607
Defining a stratum clock source
Procedure
Enter
set sync interface primary|secondary
mmID portID to define a
potential stratum clock source (T1/E1 Media Module, ISDN-BRI), where:
• mmID is the Media Module ID of an MM stratum clock source of the form
v
n ,
where n is the MM slot number
• portID is the port number for an ISDN clock source candidate. The port ID consists
of the slot number of the media module and the number of the port. You can set
more than one port. For example, v2 1, 3, 5-8.
Administering Avaya G430 Branch Gateway October 2013 605