User`s manual

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SIP User's Manual 70 Document #: LTRT-65408
Table 5-4: Proxy & Registration Parameters (continues on pages 66 to 71)
Parameter Description
Re-registration Timing (%)
[RegistrationTimeDivide
r
]
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.
Registration Retry Time
[RegistrationRetryTime]
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.
Subscription Mode
[SubscriptionMode]
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.
Enable Proxy Keep Alive
[EnableProxyKeepAlive]
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.
Note 1: This parameter must be set to 1 (OPTIONS) when Proxy redundancy is
used.
Note 2: When EnableProxyKeepAlive = 2 (REGISTER), the homing redundancy
mode is disabled.
Note 3: 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.
Proxy Keep Alive Time
[ProxyKeepAliveTime]
Defines the Proxy keep-alive time interval (in seconds) between Keep-Alive
messages.
The default value is 60 seconds.
Note: This parameter is applicable only if EnableProxyKeepAlive = 1 (OPTIONS).
When EnableProxyKeepAlive = 2 (REGISTER), the time interval between Keep-
Alive messages is determined by the parameter RegistrationTime.
Use Gateway Name for
OPTIONS
[UseGatewayNameForO
ptions]
No
[0] = Use the gateway’s IP address in keep-alive OPTIONS messages (default).
Yes
[1] = Use ‘GatewayName’ in keep-alive OPTIONS messages.
The OPTIONS Request-URI host part contains either the gateway’s IP address or a
string defined by the parameter ‘Gatewayname’.
The gateway uses the OPTIONS request as a keep-alive message to its primary and
redundant Proxies (EnableProxyKeepAlive = 1).
Enable Fallback to
Routing Table
[IsFallbackUsed]
No [0] = Gateway fallback is not used (default).
Yes
[1] = Internal Tel to IP Routing table is used when Proxy servers are not
available.
When the gateway falls back to the internal Tel to IP Routing table, the gateway
continues scanning for a Proxy. When the gateway finds an active Proxy, it switches
from internal routing back to Proxy routing.
Note: To enable the redundant Proxies mechanism set ‘EnableProxyKeepAlive’ to 1
or 2.
Prefer Routing Table
[PreferRouteTable]
Determines if the local Tel to IP routing table takes precedence over a Proxy for
routing calls.
No
[0] = Only Proxy is used to route calls (default).
Yes
[1] = The gateway checks the 'Dest Phone Prefix' and/or 'Source Phone Prefix'
field in the 'Tel to IP Routing' table for a match with the outgoing call. Only if a match
is not found, a Proxy is used.
Note: Applicable only if Proxy is not always used (‘AlwaysSendToProxy’ = 0,
‘SendInviteToProxy’ = 0).