HP MSR SERIES Configuration Manual page 697

Figure 711 Network diagram
2000
Configuration procedure
# Enable the SIP trunk function. (Details not shown.)
# 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. Enable the real-time
switching function of SIP server group 1. Set the keep-alive mode for SIP server group 1 to Options.
1. Select Voice Management > Call Connection > SIP Server Group Management from the navigation
tree and click Add.
Enterprise private network
1.1.1.1/24 1.1.1.2/24
Router A SIP trunk device
ITSP-A
SIP server
10.1.1.3/24
2.1.1.1/24
IP
SIP trunk
SIP server
10.1.1.2/24
680
Public network
2.1.1.2/24
Router B
1000