V7122 Gateway User Guide
181
ini
File Field Name
Web Parameter Name
Valid Range and Description
UseGatewayNameForOptio
ns
[Use Gateway Name for
OPTIONS]
0 = Use the gateway’s IP address in keep-alive OPTIONS messages
(default).
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).
EnableRport
Enables / disables the usage of the ‘rport’ parameter in the Via header.
0 = Enabled.
1 = Disabled (default).
The gateway adds an ‘rport’ parameter to the Via header field of each
outgoing SIP message. The first Proxy that receives this message sets the
‘rport’ value of the response to the actual port from which the request was
received. This method is used, for example, to enable the gateway to
identify its port mapping outside a NAT.
If the Via doesn’t include ‘rport’ tag, the destination port of the response will
be taken from the host part of the VIA.
If the Via includes ‘rport’ tag with no port value, the destination port of the
response will be the source port of the incoming request.
If the Via includes ‘rport’ tag with a port value (rport=1001), the destination
port of the response will be the port indicated in the ‘rport’ tag.
IsProxyHotSwap
[Enable Proxy Hotswap]
Enable Proxy Hot Swap redundancy mode.
0 = Disabled (default)
1 = Enabled
If Hot Swap is enabled, SIP INVITE message is first sent to the primary
Proxy server. If there is no response from the primary Proxy server for
‘ProxyHotSwapRtx’ retransmissions, the INVITE message is resent to the
redundant Proxy server.
ProxyHotSwapRtx
[Number of RTX before
Hotswap]
Number of retransmitted INVITE messages before call is routed (hot swap)
to another Proxy
The valid range is 1 to 30. The default value is 3.
This parameter is also used for alternative routing using the
Tel to IP Routing table. If a domain name in the routing table is
resolved into 2 IP addresses, and if there is no response for
‘ProxyHotSwapRtx’ retransmissions to the INVITE message
that is sent to the first IP address, the gateway immediately
initiates a call to the second IP address.
ProxyRedundancyMode
[Redundancy Mode]
0 (Parking mode) = the gateway continues working with the last active
Proxy until the next failure (default).
1(Homing mode) = the gateway always tries to work with the primary Proxy
server (switches back to the primary Proxy whenever it is available).
To use ProxyRedundancyMode, enable Keep-alive with Proxy
option (EnableProxyKeepAlive=1 or 2).
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