Aastra 9000i Series Administrator's Manual page 235

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:
Parameter
sip outbound support
sip symmetric udp signaling
sip transport protocol (
Global Parameters
sip backup outbound proxy
sip backup outbound proxy port
Per-Line Parameters
sip lineN backup outbound proxy
sip lineN backup outbound proxy port
Use the following procedure to configure backup outbound proxies..
Configuration Files
For the specific parameter you can set in the configuration files, see Appendix A, the section,
Outbound Proxy (Global Settings)"
page A-93.
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.
4-72
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
"SIP Outbound Support",
"Advanced SIP Settings".
on page A-82 and "Backup Outbound Proxy (Per-line Settings)"
Aastra Web UI
Configuration
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"Symmetric UDP Signaling
41-001343-01 Rev 02, Release 3.2.2
Configuration File
Configuration







Appendix A,
Setting", and
"Backup
on