User's Manual 882 Document #: LTRT-89730
Mediant 3000
Parameter Description
[IsFallbackUsed]

[0] Disable = (Default) Fallback is not used.
 [1] Enable = The Tel-to-IP Routing table is used when Proxy servers
are unavailable.
When the device falls back to the Tel-to-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.
Prefer Routing Table
[PreferRouteTable]
Determines whether the device's routing table takes precedence over a
Proxy for routing calls.
 [0] No = (Default) Only a Proxy server is used to route calls.
 [1] Yes = The device checks the routing rules in the Tel-to-IP Routing
table for a match with the Tel-to-IP call. Only if a match is not found is
a Proxy used.
Always Use Proxy
[AlwaysSendToProxy]
Determines whether the device sends SIP messages and responses
through a Proxy server.
 [0] Disable = (Default) Use standard SIP routing rules.
 [1] Enable = All SIP messages and responses are sent to the Proxy
server.
Note: The parameter is applicable only if a Proxy server is used (i.e., the
parameter IsProxyUsed is set to 1).
SIP ReRouting 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 = (Default) INVITE messages that are generated as a
result of Transfer or Redirect are sent direct
ly to the URI, according to
the Refer-To header in the REFER message, or Contact header in
the 3xx response.
 [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:
 The parameter is applicable only to the Gateway application.
 When the 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 the 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 the parameter is set to [2], the XferPrefix parameter can be
used to define different routing rules for redirect calls.
 The parameter is disregarded
if the parameter AlwaysSendToProxy is
set to 1.
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) No NAPTR or SRV queries are performed.
 [1] SRV = If the Proxy/Registrar IP address parameter,
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