AudioCodes C450HD - Managing Phone Directories

Administrator's Manual 5. Configuring VoIP Settings
Version 3.4.3 67 400HD Series IP Phones
Parameter Description
voip/signalling/sip/sip_registrar/port
Configure this parameter when you're using a regular
Proxy server.
5.1.2.2.2 Failback
 To configure failback:
• Use the table as reference.
Table 5-5: Device Registration Failback Parameter
Parameter Description
voip/signalling/sip/failback_retry_timeout
Only applies to BroadSoft. Applies only if
you're operating with the DNS mode of
failover, i.e., with a DNS server.
 0 Disable (default) – it'll never try to
access back to the first one.
 n Time, in seconds, that must lapse
before failback is performed.
5.1.2.3 Preventing Unregistering after Changing Settings and Reloading
An unregistration message is by default sent after making a change to the VoIP application
configuration and reloading.
The VoIP application by default sends a SIP Registration message with Expires:0
(unregister).
The network administrator can change the default and prevent unregistering.
 To prevent unregistering:
• Use the table as reference.
Table 5-6: Preventing Unregistering
Parameter Description
voip/signalling/sip/unregister_on_voip_reload Either:
 0 SIP Registration message with Expires:0
(unregister) is sent.
 1 (Default) SIP Registration message with
Expires:0
(unregister) is not sent.