This object specifies which MGC Redundant Group
will be used in XGCP.
The value of this object refers to the object cMgcGrpIndex
from MGC Redundant Group Table, cMgcGrpParamTable.
There are two conditions for association a MGC group:
1. At least one MGC is associated with the MGC group
2. At least one protocol is associated with the MGC
group
If the value of the object is non-zero, it means
the media gateway has a MGC Redundant Group.
In the call setup, the parameters of call agents
within the MGC Redundant Group will be sequentially
tried according to its preference.
This object cXgcpMgcConfigMgcGrpNum and object
cXgcpMgcConfigAddress are mutually exclusive.
The object cXgcpMgcConfigAddress can be set only when
the object cXgcpMgcConfigMgcGrpNum is equal to 0.
If the value of the object is 0, which means there is
no MGC Redundant Group associated with the media gateway.
It has only one call agent (in media gateway level) to
communicate with. This call agent is indicated by
cXgcpMgcConfigAddress and will be used in call setup
(if call set-up on media gateway level).