Version 7.2 721 Mediant 1000B Gateway & E-SBC
User's Manual 39. CRP Configuration
Always Emergency: The CRP routes the calls between the branch users themselves
as if connectivity failure has occurred with the IP PBX. The CRP also registers the
branch users in its registration database.
Figure 39-2: CRP in Always Emergency Mode
To configure the Call Survivability mode:
1. Open the General Settings page (Setup menu > Signaling & Media tab > CRP folder
> CRP General Settings)).
2. From the 'CRP Survivability Mode' drop-down list, select the required mode.
3. Click Apply.
39.3 Pre-Configured IP Groups
For CRP, the device is pre-configured with the following IP Groups in the IP Groups table:
Table 39-1: Pre-configured IP Groups in the IP Groups Table
Index Type Description
1 User Users
2 Server Proxy
3 Server Gateway
These IP Groups represent the following IP entities:
"Users" IP Group: LAN users (e.g., IP phones) at the branch office
"Server" IP Group: Server (e.g., hosted IP PBX at the Enterprise's headquarters)
"Gateway" IP Group: Device's interface with the PSTN
These IP Groups are used in the IP-to-IP routing rules to indicate the source and
destination of the call (see ''Pre-Configured IP-to-IP Routing Rules'' on page 722).
Note:
• These IP Groups cannot be deleted and additional IP Groups cannot be
configured. The IP Groups can be edited, except for the fields listed above, which
are read-only.
• For accessing the IP Groups table and for a description of its parameters, see
''Configuring IP Groups'' on page 333.
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