3Com VCX V7122 SIP, User Manual

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3Com VCX V7122/SIP VoIP Gateway User Manual
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ƒ Supported codecs: G.711 A-law, G.711
µ
-law, G.723, G.729A and NetCoder (from 6.4
through 8.8 Kbps).
ƒ Can negotiate codec from a list of given codecs.
For detailed information, see the latest VCX V7122/SIP Release Notes .
VCX V7122/SIP Gateway Features
Details of how to use the VCXV7122 SIP Gateway Features are shown in Table 15 .
Table 15
Using SIP Gateway Features
Feature Parameter Sheet of Excel
Utility Value
SIPGatewayName 3Com Gateway name. If specified, this
name is used in right side of SIP URI
in FROM header; otherwise, the
Gateway IP address is used. SIPgw
IsProxyUsed SIPgw 1 Use SIP Proxy
ProxyIp, Proxy IP address SIPgw IP
ProxyIP IP address of an outbound proxy
server. Can be either an explicit IP
address or a domain name.
Two redundant proxy servers are
supported. The Gateway starts
working with the main proxy (first on
the list), in case of a failure; the
Gateway tries to communicate with the
first redundant proxy (second on the
list). Once a proxy is found, the
Gateway will work with it, until the next
failure occurs. If neither of the proxies
responds, the Gateway goes over the
list again.
The Gateway monitors connection
with a proxy using keep-alive
messages (OPTIONS).
SIPgw IP
ProxyName Proxy domain name used in SIP
Request-URI. If this parameter is not
specified, the proxy IP address is used
instead in SIP URI. SIPgw