384
14. Enter 5000 for User ID.
15. Enter 5000 for Telephone Number.
16. Enter 5000 for Authentication Username.
17. Enter 5000 for Authentication Password.
18. Click Apply.
Configuring Router A
1. Configure a local number in the local number configuration page: The ID is 55661000, the
number is 55661000, and the bound line is line2/0.
2. Configure a call route to Router B in the call route configuration page: The ID is 88995000, the
destination number is 88995000, the routing type is SIP, and the destination address is 2.1.1.2.
Configuring Router B
1. Configure a local number in the local number configuration page: The ID is 5000, the number is
5000, the bound line is line2/0, the user name is 5000, and the password is 5000.
2. Configure SIP registration in the connection properties configuration page: Enable SIP
registration, and configure the main registrar’s IP address as 2.1.1.2.
Verifying the configuration
• Select Voice Management > States and Statistics > Local Survival Service States from the
navigation tree. You can find that number 5000 has been registered with the local SIP server on
Router C.
• Place a call from phone 55661000 to phone 88995000. The local SIP server on Router C
removes the area prefix 8899 from the called number, and alerts internal phone 5000. Pick up
phone 5000. The call is established.
Configuring a call-out route
Network requirements
The internal numbers of a company are four-digit long and the area prefix is 8899. External phone
55665000 attached to Router B is not registered with the local SIP server on Router C; internal
phone 1000 attached to Router A is already registered with Router C. When a user in the company
dials the external number, the local SIP server will route the call according to the configured call-out
route and add area prefix 8899 to the calling number.
Figure 778 Network diagram
Configuring the local SIP server on Router C
# Configure the local SIP server to operate in alone mode.
1. Select Voice Management > SIP Local Survival > Service Configuration from the
navigation tree to access the page for configuring services.
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