R2511-HP MSR Router Series Voice Configuration Guide(V5)

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# Create SIP server group 1. Add two SIP servers into the server group: the IP addresses are 10.1.1.2 and
10.1.1.3, and the server with the address 10.1.1.2 has a higher priority value.
[TG-voice] server-group 1
[TG-voice-group-1] address 1 ipv4 10.1.1.2
[TG-voice-group-1] address 3 ipv4 10.1.1.3
# Enable the real-time switching function of SIP server group 1. Set the keepalive mode and redundancy
mode for SIP server group 1 to OPTIONS and parking respectively.
[TG-voice-group-1] keepalive options
[TG-voice-group-1] hot-swap enable
[TG-voice-group-1] quit
[TG-voice] sip
[TG-voice-sip] redundancy mode parking
Other configurations on the SIP trunk device and other devices are the same as those described in
"Configuration procedure."
Configuration verification
1. When the SIP server with IP address 10.1.1.2 fails, the SIP server with IP address 10.1.1.3 takes
over communications between the private network and the public network. After that, the
communications recover.
2. After the SIP server with IP address 10.1.1.2 recovers, it does not take over call processing and the
current SIP server with IP address 10.1.1.3 keeps working.
Configuring call match rules
Network requirements
As shown in Figure 64, the enterprise private network has a SIP trunk device deployed. Router A1 and
Router A2 are private network devices, and Router B is a public network device. Users connected to
Router A2 are not allowed to call public network users. All calls between the private network and public
network are made through the SIP trunk device.
Figure 64 Network diagram