AASTRA 6700i series, 9143, 9480i, 9480i CT SIP Administrator Guide EN - Manual (Page 235)

4-72 41-001343-01 Rev 03, Release 3.2.2
Configuring a Backup Outbound Proxy
To configure this feature an Administrator can set the following parameters in the configuration
files or the Aastra Web UI:
Use the following procedure to configure backup outbound proxies..
Limitations
The following are limitations with this feature:
• Keep-alive mechanisms shall be limited to IPv4 only.
• Per M5T, RFC5686 is not fully supported although the draft upon which it was based
(draft-ietf-sip-outbound-15) is supported.
Parameter
Aastra Web UI
Configuration Configuration File
Configuration
sip outbound support -
4
sip symmetric udp signaling -
4
sip transport protocol ( 4 4
Global Parameters
sip backup outbound proxy 4 4
sip backup outbound proxy port 4 4
Per-Line Parameters
sip lineN backup outbound proxy 4 4
sip lineN backup outbound proxy port 4 4
Note: The “sip outbound support”, “sip symmetric udp signaling”, and
“sip transport protocol” parameters are existing parameters on the
phone. For more information about these parameters, see Appendix A ,
“SIP Outbound Support” , “Symmetric UDP Signaling Setting” , and
“Advanced SIP Settings” .
Configuration Files
For the specific parameter you can set in the configuration files, see Appendix A, the section, “Backup
Outbound Proxy (Global Settings)” on page A-82 and “Backup Outbound Proxy (Per-line Settings)” on
page A-93.