Home Realm Configuration

To configure the home realm:

1. In Superuser mode, type configure terminal and press Enter.

   ORACLE# configure terminal

2. Type session-router and press Enter to access the system-level configuration elements.

   ORACLE(configure)# session-router

3. Type sip-config and press Enter. The system prompt changes.

   ORACLE(session-router)# sip-config
   ORACLE(sip-config)#

   From this point, you can configure SIP configuration parameters. To view all sip-config parameters, enter a ? at the system prompt.

4. home-realm-id—Enter the name of the realm you want to use for the realm ID. For example, acme.

   The name of the realm must correspond to the identifier value you entered when you configured the realm.

5. egress-realm-id—Optional. Enter the egress realm ID to define the default route for SIP requests addressed to destinations outside the home realm’s address prefix.

   If you enter a value for this optional field, it must correspond to the identifier value you entered when you configured the realm.

   Note:

   You should leave this parameter blank for access/backbone applications. When left blank, the realm specified in the home-realm-id parameter is used by default.
6. nat-mode—Indicate the SIP NAT mode. The default is none. The valid values are:

   • public—Indicates the subnet defined in the addr-prefix-id field of the home realm is public and the subnet defined in the addr-prefix-id field of all external realms identified in the SIP NAT are private networks. IPv4 addresses are encoded in SIP messages received from the external realm defined by the SIP NAT. The IPv4 addresses are decoded in messages that are sent to the realm.

   • private—Indicates the subnet defined in the addr-prefix-id field of the home realm is private and the subnet defined in the addr-prefix-id field of all external realms identified in the SIP NAT are public networks. IPv4 addresses are encoded in SIP messages sent to the external realm defined by the SIP NAT and decoded in messages received from the realm.

   • none—No SIP NAT function is necessary.

     The following example shows the SIP home realm configured for a peering network.

     sip-config
             state                          enabled
             operation-mode                 dialog
     dialog-transparency		disabled
             home-realm-id                  acme
             egress-realm-id
             nat-mode                       Public
             registrar-domain
             registrar-host
             registrar-port                 0
             init-timer                     500
             max-timer                      4000
             trans-expire                   32
             invite-expire                  180
             inactive-dynamic-conn          32
             red-sip-port                   1988
             red-max-trans                  10000
             red-sync-start-time            5000
             red-sync-comp-time             1000
             last-modified-date             2005-03-19 12:41:28