Which two rules apply to MMOH in SRST? (Choose two.)
A.
A maximum of three MOH groups are allowed.
B.
Cisco Unified SRST voice gateway allows you to associate phones with different MOH groups on
the basis of their IP address to receive different MOH media streams.
C.
A maximum of five media streams are allowed.
D.
Cisco Unified SRST voice gateway allows you to associate phones with different MOH groups on
the basis of their MAC address to receive different MOH media streams.
E.
Cisco Unified SRST voice gateway allows you to associate phones with different MOH groups on
the basis of their extension numbers to receive different MOH media streams.
Support for Multiple MOH Sources
Cisco Unified SRST v8.x also introduces support for multiple Music On Hold (MOH) sources.
Before Cisco Unified SRST v8.x, only a single MOH file was supported by Cisco Unified SRST, CUCM Express in SRST mode, and CUCM Express in standalone mode. Cisco Unified SRST v8.x allows you to configure up to five additional MOH sources by configuring MOH groups. Only SCCP IP Phones support these newly introduced MOH groups. You can configure each MOH group with an individual MOH file that is located in the flash memory of the router, and you can enable multicast MOH for each MOH group. Each MOH group is configured with the DN ranges that should use the corresponding MOH group when callers are put on hold, as described in Chapter 7, “Implementing Cisco Unified Communications Manager Express (CUCME) in SRST Mode.”
The traditional MOH configuration for Cisco Unified SRST and CUCM Express is still supported. It is used by all phones that do not have a MOH group assigned. All these phones are SIP and SCCP phones whose DNs have not been specified in any MOH group. MOH files can be cached in router RAM. This process reduces the amount of read operations in flash, but it requires enough available RAM at the router. You can limit RAM usage for MOH file caching by using smaller MOH files.
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