Mitel 6867i Administrator's Manual page 218

Mitel 6800 Series SIP Phone Release 4.2.0 Administrator Guide
SIP OUTBOUND ENABLED AND
backup proxy and backup registrar
configured,
backup proxy, backup registrar, and
backup outbound proxy configured,
This configuration assumes that
Note:
the outbound proxy is maintaining its
own outbound connections to the
proxy/registrar.
backup outbound proxy configured
only,
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• 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.
• 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 background.
• 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.
• 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.