Siemens HIPATH 20 - Manual (Page 84)

Administration
A31003-O1010-M100-9-76A9, 05/05/2008
3-42 HiPath 8000 - OpenStage Family, Administration Manual
administration.fm
System Settings
3.5.9 SIP Survivability
The survivability feature will allow the SIP User Agent to register with a backup SIP proxy which
will be used to make and receive calls when the primary SIP proxy fails or is not reachable due
to a network failure.
The prime reason for this feature is to maintain basic call functionality when network failures
occur, and it is therefore expected that some features and functionality will not be available
when working in survivability mode.
The Backup registration flag indicates whether or not the phone treats the backup proxy serv-
er as a SIP registrar. If set to "Yes", the phone tries to register its SIP address with the server
whose IP address or hostname is specified by Backup proxy address.
The Backup registration timer determines the duration of a registration with the SIP server.
The Backup transport option displays the current transport protocol used to carry SIP mes-
sages to the Backup proxy server.
The Backup OBP flag indicates whether or not the Backup proxy server is used as an out-
bound proxy.
Data required
• Backup registration flag: Determines whether or not the backup proxy is used as a SIP
Registrar.
Value Range: "Yes", "No".
Default: "Yes".
• Backup proxy address: IP address or hostname of the backup proxy server.
• Backup registration timer: Expiry time of the registration in seconds.
Default: 3600.
• Backup transport: Transport protocol to be used for messages to the backup proxy.
Value range: "TCP", "UDP", "TLS".
Default: "UDP".
• Backup OBP flag: Determines whether or not the backup proxy is used as an outbound
proxy.
Value range: "Yes", "No".
Default: "No".
• Network > Port Configuration > Backup proxy: Port of the backup proxy server.
Default: 5060.