AudioCodes Mediant 2000, User Manual

Page: 139 / 418

Version 5.6 139 November 2008
SIP User's Manual 3. Web-Based Management
Parameter Description
an SRV query is performed. The SRV query returns up to four
Proxy host names and their weights. The device then performs
DNS A-record queries for each Proxy host name (according to the
received weights) to locate up to four Proxy IP addresses.
Therefore, if the first SRV query returns two domain names, and
the A-record queries return two IP addresses each, no additional
searches are performed.
If set to NAPTR [2], an NAPTR query is performed. If it is
successful, an SRV query is sent according to the information
received in the NAPTR response. If the NAPTR query fails, an
SRV query is performed according to the configured transport type.
If the Proxy IP address parameter contains a domain name with
port definition (e.g., ProxyIP = domain.com:5080), the device
performs a regular DNS A-record query.
If a specific Transport Type is defined, a NAPTR query is not
performed.
Note:
When enabled, NAPTR/SRV queries are used to discover
Proxy servers even if the parameter DNSQueryType is disabled.
Number of RTX Before Hot-
Swap
[HotSwapRtx]
Number of retransmitted INVITE/REGISTER messages before the
call is routed (hot swap) to another Proxy/Registrar.
The valid range is 1 to 30. The default value is 3.
Note:
This parameter is also used for alternative routing using the
'Tel to IP Routing' table (or 'Outbound IP Routing' table if
EnableSBC is set to 1). If a domain name in the table is resolved
into two IP addresses, and if there is no response for HotSwapRtx
retransmissions to the INVITE message that is sent to the first IP
address, the device immediately initiates a call to the second IP
address.
Use Gateway Name for
OPTIONS
[UseGatewayNameForOption
s]
Determines whether the device uses its IP address or gateway
name in keep-alive SIP OPTIONS messages.
ƒ
[0]
No = Use the device's IP address in keep-alive OPTIONS
messages (default).
ƒ
[1]
Yes = Use 'Gateway Name' (SIPGatewayName) in keep-
alive OPTIONS messages.
The OPTIONS Request-URI host part contains either the device's
IP address or a string defined by the parameter SIPGatewayName.
The device uses the OPTIONS request as a keep-alive message to
its primary and redundant Proxies (i.e., the parameter
EnableProxyKeepAlive is set to 1).
User Name
[UserName]
User name used for Registration and Basic/Digest authentication
with a Proxy / Registrar server.
The parameter doesn't have a default value (empty string).
Note:
Applicable only if single device registration is used (i.e.,
Authentication Mode is set to Authentication Per gateway).
Password
[Password]
The password used for Basic/Digest authentication with a Proxy /
Registrar server. A single password is used for all device ports.
The default is 'Default_Passwd'.