Version 7.2 755 Mediant 500L Gateway & E-SBC
User's Manual 39. Advanced SBC Features
To configure support for dual registration:
6. On the SIP entity (IP Phone), configure the primary and secondary proxy server
addresses as the IP address of the device and where each address has a different
SIP port number.
7. Open the SBC General Settings page (Setup menu > Signaling & Media tab > SBC
folder > SBC General Settings), and then from the 'Keep Original User in Register'
drop-down list, select Keep user; add unique identifier as URI parameter.
8. In the Message Manipulations table, configure the following rules:
• Index 0:
♦ Manipulation Set ID: 1
♦ Action Subject: header.contact.url.ac-int
♦ Action Type: Modify
♦ Action Value: '1'
• Index 1:
♦ Manipulation Set ID: 2
♦ Action Subject: header.contact.url.ac-int
♦ Action Type: Modify
♦ Action Value: '2'
9. In the SIP Interfaces table, configure the following SIP Interfaces:
• Index 0 (SIP Interface for IP Phone A):
♦ Name: Interface-1
♦ UDP Port: 5060
♦ Pre-classification Manipulation Set ID: 1
• Index 1 (SIP Interface for IP Phone B):
♦ Name: Interface-2
♦ UDP Port: 5080
♦ Pre-classification Manipulation Set ID: 2
10. In the Proxy Sets table, configure a Proxy Set for each proxy server (primary and
secondary):
• Index 0:
♦ Proxy Name: Primary
♦ SBC IPv4 SIP Interface: Interface-1
♦ Proxy Address: 200.10.10.1
• Index 1:
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