User's Manual

9600 extension operation
Features available during failover
The following apply while an extension is in the process of failover to another SIP controller.
Typically the failover process will be completed within 2 minutes.
•
The phone will display the survivability warning icon. In addition:
• If the extension is idle, it displays the message Link recovery. Limited phone
service. Calls may be lost.
•
If the user has a call in progress which continues, the survivability
warning icon
is displayed along with the message Limited phone service. The only call control
available is End Call. The phone will not failover until the call is ended.
• If the message Acquiring Service... is displayed it indicates that the extension could
not detect any available SIP controller. It will not failover until an available controller
is detected.
• During the failover:
• No new calls can be made or received.
• Held calls are lost during failover.
• Transfers are lost during failover.
Features available during survival mode
The following section only covers features when using the B5800 Branch Gateway system for
survival mode.
• Call appearances can be used to make and receive calls as normal.
• Dialing that matches local B5800 Branch Gateway extension numbers will be routed as
normal.
• All other numbers will be processed by the B5800 Branch Gateway and routed using its
call control settings, for example calls with the external dialing prefix.
• The dial plan used by the extension is that specified by the 46xxsettings.txt file.
• Hold and transfer are supported.
• AST features (FNUs and Bridged call appearances) are unavailable and not displayed
on the phone menus. Some features can be invoked on B5800 Branch Gateway by dialing
appropriate short codes.
• Unsupported features are not displayed.
Extension administration
204 Implementing the Avaya B5800 Branch Gateway November 2011
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