Specifications

Administrator's Manual 17. SIP Settings
 Using the Configuration file:
Table 17-3: SIP Proxy Server Redundancy Parameters
Parameter Description
Use Redundant Proxy
[voip/signalling/sip/redundant_proxy/enabled]
Enables the redundant proxy mechanism.
 [0] Disable (default) - Phone doesn't
use redundant proxy (default).
 [1] Enable - Phone registered to
redundant proxy if the primary proxy
does not respond to SIP signaling
messages.
Redundant Proxy Address
[voip/signalling/sip/redundant_proxy/address]
The IP address or host name of the
redundant proxy.
The default value is 0.0.0.0.
Note: This parameter is applicable only if
the parameter use_redundant_proxy is
set to 1.
Redundant Proxy Port
voip/signalling/sip/redundant_proxy/port
The UDP or TCP port of the redundant
proxy server.
The valid range is 1024 to 65535. The
default value is 5060.
Note: This parameter is applicable only if
the parameter use_redundant_proxy is
set to 1.
Redundant Proxy Keep Alive Period
voip/signalling/sip/redundant_proxy/keepalive_period
Defines the interval in seconds for
sending keep-alive messages to the
proxy.
The valid range is 0 to 300. The default
value is 60.
Note: This parameter is applicable only if
the parameter use_redundant_proxy is
set to 1.
Switch back to Primary SIP proxy when available
[voip/signalling/sip/redundant_proxy/symmetric_mode]
Determines the proxy redundancy mode.
[0]- Asymmetric mode. (default)
[1] - Symmetric mode.
The Redundant Proxy feature allows the
configuration of a backup SIP proxy
server to increase QoS stability. Once
this feature is enabled, the phone
identifies cases where the primary proxy
does not respond to SIP signaling
messages. In these scenarios, the phone
registers to the redundant proxy and the
phone seamlessly continues normal
functionality, without the user noticing
any connectivity failure or malfunction
with the primary proxy.
The Redundant Proxy feature includes
two operational modes:
 Asymmetric mode: the primary proxy
is assigned a higher priority for
registration than the redundant proxy.
Version 2.0.0 97 October 2012