3Com VCX v7111 User Manual page 80

Parameter
Registrar IP Address
[RegistrarIP]
Registration Time
[RegistrationTime]
Re-registration Timing (%)
[ RegistrationTimeDivider ]
Registration Retry Time
[RegistrationRetryTime]
Subscription Mode
[SubscriptionMode]
Enable Proxy Keep Alive
[EnableProxyKeepAlive]
80
Description
IP address and optionally port number of Registrar server.
Enter the IP address in dotted format notation, for example
201.10.8.1:<5080>.
If not specified, the REGISTER request is sent to the primary
Proxy server (see Proxy IP address parameter).
When port number is specified, DNS NAPTR/SRV queries are not
performed, even if DNSQueryType is set to 1.
Defines the time (in seconds) for which registration to a Proxy server is
valid. The value is used in the header Expires. In addition, this parameter
defines the time interval between Keep-Alive messages when
EnableProxyKeepAlive = 2 (REGISTER).
Typically a value of 3600 should be assigned, for one hour registration.
The gateway resumes registration according to the parameter
RegistrationTimeDivider.
The default value is 80. The valid range is 10 to 2000000.
Defines the re-registration timing (in percentage). The timing is a
percentage of the re-register timing set by the Registration server.
The valid range is 50 to 100. The default value is 50.
For example: If RegistrationTimeDivider = 70 (%) and Registration Expires
time = 3600, the gateway resends its registration request after 3600 x 70%
= 2520 sec.
Defines the time period (in seconds) after which a Registration request is
resent if registration fails with 4xx, or there is no response from the
Proxy/Registrar.
The default is 30 seconds. The range is 10 to 3600.
Determines the method the gateway uses to subscribe to an MWI server.
Per Endpoint [0] = Each endpoint subscribes separately. This method is
usually used for FXS gateways (default).
Per Gateway [1] = Single subscription for the entire gateway. This method
is usually used for FXO gateways.
Disable [0] = Disable (default).
Using OPTIONS [1] = Enable Keep alive with Proxy using OPTIONS.
Using REGISTER [2] = Enable Keep alive with Proxy using REGISTER.
If EnableProxyKeepAlive = 1, SIP OPTIONS message is sent every
ProxyKeepAliveTime. If EnableProxyKeepAlive = 2, SIP REGISTER
message is sent every RegistrationTime. Any response from the Proxy,
either success (200 OK) or failure (4xx response) is considered as if the
Proxy is correctly communicating.
This parameter must be set to 1 (OPTIONS) when Proxy
redundancy is used.
When EnableProxyKeepAlive = 2 (REGISTER), the homing
redundancy mode is disabled.
When the active proxy does not respond to INVITE messages
sent by the gateway, the proxy is marked as offline. The behavior
is similar to a Keep-Alive (OPTIONS or REGISTER) failure.
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VCX V7111 VoIP Gateway User Guide