AudioCodes Mediant 600 - Page 584

SIP User's Manual 584 Document #: LTRT-83310
Mediant 600 & Mediant 1000
Parameter Description
[IsFallbackUsed]

[1] Enable = The Outbound IP Routing Table is used when Proxy
servers are unavailable.
When the device falls back to the Outbound IP Routing Table', it
continues scanning for a Proxy. When the device locates an active
Proxy, it switches from internal routing back to Proxy routing.
Note: To enable the redundant Proxies mechanism, set the parameter
EnableProxyKeepAlive to 1 or 2.
Web/EMS: Prefer Routing
Table
[PreferRouteTable]
Determines whether the device's internal routing table takes precedence
over a Proxy for routing calls.
 [0] No = Only a Proxy server is used to route calls (default).
 [1] Yes = The device checks the routing rules in the Outbound IP
Routing Table for a match with the Tel-to-IP call. Only if a match is
not found is a Proxy used.
Web/EMS: Always Use
Proxy
[AlwaysSendToProxy]
Determines whether the device sends SIP messages and responses
through a Proxy server.
 [0] Disable = Use standard SIP routing rules (default).
 [1] Enable = All SIP messages and responses are sent to the Proxy
server.
Note: This parameter is applicable only if a Proxy server is used (i.e.,
the parameter IsProxyUsed is set to 1).
Web: SIP ReRouting Mode
EMS: SIP Re-Routing
Mode
[SIPReroutingMode]
Determines the routing mode after a call redirection (i.e., a 3xx SIP
response is received) or transfer (i.e., a SIP REFER request is
received).
 [0] Standard = INVITE messages that are generated as a result of
Transfer or Redirect are sent directly to the URI, according to the
Refer-To header in the REFER message, or Contact header in the
3xx response (default).
 [1] Proxy = Sends a new INVITE to the Proxy.
Note: This option is applicable only if a Proxy server is used and the
parameter AlwaysSendtoProxy is set to 0.
 [2] Routing Table = Uses the Routing table to locate the destination
and then sends a new INVITE to this destination.
Notes:
 When this parameter is set to [1] and the INVITE sent to the Proxy
fails, the device re-routes the call according to the Standard mode
[0].
 When this parameter is set to [2] and the INVITE fails, the device re-
routes the call according to the Standard mode [0]. If DNS resolution
fails, the device attempts to route the call to the Proxy. If routing to
the Proxy also fails, the Redirect/Transfer request is rejected.
 When this parameter is set to [2], the XferPrefix parameter can be
used to define different routing rules for redirect calls.
 This parameter is disregarded if the parameter AlwaysSendToProxy
is set to 1.
Web/EMS: DNS Query
Type
[DNSQueryType]
Enables the use of DNS Naming Authority Pointer
(NAPTR) and Service
Record (SRV) queries to resolve Proxy and Registrar servers and to
resolve all domain names that appear in the SIP Contact and Record-
Route headers.
 [0] A-Record (default)
 [1] SRV
 [2] NAPTR