Global SIP Settings
41-001343-02 REV05 – 07.2014
4-60
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:
SIP Outbound Enabled and
backup proxy and backup registrar configured,
•
Establishes flow to the primary proxy and registrar.
•
If the flow to the primary registrar fails, the phone:
–
establishes flow to the backup registrar.
–
registers to the backup registrar.
–
attempts to reestablish flow to the primary registrar in the background.
–
When the primary registrar comes back up, the phone unregisters from the backup
and registers with the primary.
•
If the flow to the primary proxy fails, the phone:
–
establishes flow to the backup proxy.
–
registers the new AOR with the active registrar.
–
moves subscriptions to the backup proxy.
–
attempts to reestablish the flow to the primary proxy in the background.
•
When the flow to the primary proxy is reestablished, the phone:
–
registers the primary AOR to the active registrar.
–
moves subscriptions to the primary proxy.
–
unregisters/unsubscribes from the backup proxy/registrar.
backup proxy, backup registrar, and backup outbound
proxy configured,
Note:
This configuration assumes that the outbound proxy is
maintaining its own outbound connections to the
proxy/registrar.
•
Establishes a flow to the primary outbound proxy.
•
If the flow fails, the phone:
–
establishes the flow to the backup proxy.
–
registers the backup AOR to the backup registrar.
–
moves subscriptions to the backup proxy.
–
attempts to reestablish connection to the primary outbound proxy in the back-
ground.
•
When the flow to the primary proxy is reestablished, the phone:
–
registers the primary AOR to the primary registrar.
–
moves the subscriptions to the primary proxy.
–
unregisters/unsubscribes from the backup proxy/registrar.
backup outbound proxy configured only,
•
Establishes a flow to the primary outbound proxy.
•
If the flow fails, the phone:
–
establishes the flow to the backup proxy.
–
registers the backup AOR to the backup registrar.
–
moves subscriptions to the backup proxy.
Parameter
Aastra Web UI Configuration
Configuration File Configuration
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
✔
✔
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
,
“Symmetric UDP Signaling Setting”
, and
.