Administration of the Avaya G350 Media Gateway - Avaya Support

Chapter 20: Setting synchronizationIf the Avaya G350 Media Gateway contains an MM710 T1/E1 media module, it is advisable todefine the MM710 as the primary synchronization source for the G350. In so doing, clocksynchronization signals from the Central Office (CO) are used by the MM710 to synchronize alloperations of the G350. If no MM710 is present, it is not necessary to set synchronization.Use the set sync interface {primary|secondary} {mmID|[portID]} command todefine 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 vn, where n is theMM slot number.portID is the port number for an ISDN clock source candidate. The port ID consists of theslot number of the media module and the number of the port. You can set more than oneport. For example: v2 1,3,5-8.Note:Note: The port ID parameter only applies if the source is a BRI module.By setting the clock source to primary, normal failover will occur. The identity of the currentsynchronization source is not stored in persistent storage. Persistent storage is used topreserve the parameters set by this command.Note:Note: Setting the source to secondary overrides normal failover, generates a trap, andasserts a fault. Thus, it is not recommended to set the clock source to secondaryexcept for testing purposes.To determine which reference source is the active source, use the set sync source{primary|secondary} command. If you choose secondary, the secondary source becomesactive, and the primary source goes on standby. In addition, fallback to the primary source doesnot occur even when the primary source becomes available.If neither primary nor secondary sources are identified, the local clock becomes the activesource.The following example sets the MM710 media module located in slot 2 of the G350 chassis asthe primary clock synchronization source for the Avaya G350 Media Gateway.set sync interface primary v2set sync source primaryIf the G350 includes a second MM710 media module, enter the following additional command:set sync interface secondary v3set sync source secondaryIssue 3 January 2005 287