Version 6.2
845
February 2011
SIP User's Manual
12. Configuration Parameters Reference
Parameter
Description
Web: Reasons for Alternative Tel-to-IP Routing Table
EMS: Alt Route Cause Tel to IP
[AltRouteCauseTel2IP]
This
ini
file table parameter configures SIP call failure reason
values received from the IP side. If an IP call is released as a
result of one of these reasons, the device attempts to locate an
alternative IP route (address) for the call in the 'Outbound IP
Routing Table' (if a Proxy is not used) or used as a redundant
Proxy (you need to set the parameter RedundantRoutingMode
to 2). The release reason for Tel-to-IP calls is provided in SIP
4xx, 5xx, and 6xx response codes.
The format of this parameter is as follows:
[AltRouteCauseTel2IP]
FORMAT AltRouteCauseTel2IP_Index =
AltRouteCauseTel2IP_ReleaseCause;
[\AltRouteCauseTel2IP]
For example:
AltRouteCauseTel2IP 0 = 486; (Busy Here)
AltRouteCauseTel2IP 1 = 480; (Temporarily Unavailable)
AltRouteCauseTel2IP 2 = 408; (No Response)
Notes:
This parameter can include up to 5 indices.
The reasons for alternative routing for Tel-to-IP calls apply
only when a Proxy is not used.
When there is no response to an INVITE message (after
INVITE retransmissions), the device issues an internal 408
'No Response' implicit release reason.
The device sends the call to an alternative IP route only after
the call has failed and the device has subsequently
attempted twice to establish the call unsuccessfully.
The device also plays a tone to the endpoint whenever an
alternative route is used. This tone is played for a user-
defined time (configured by the parameter
AltRoutingToneDuration).
For an explanation on using
ini
file table parameters, see
''Configuring ini File Table Parameters'' on page
Web: Reasons for Alternative IP-to-Tel Routing Table
EMS: Alt Route Cause IP to Tel
[AltRouteCauseIP2Tel]
This
ini
file table parameter configures call failure reason values
received from the PSTN side (in Q.931 presentation). If a call is
released as a result of one of these reasons, the device
attempts to locate an alternative Hunt Group for the call in the
'Inbound IP Routing Table'.
The format of this parameter is as follows:
[AltRouteCauseIP2Tel]
FORMAT AltRouteCauseIP2Tel_Index =
AltRouteCauseIP2Tel_ReleaseCause;
[\AltRouteCauseIP2Tel]
For example:
AltRouteCauseIP2Tel 0 = 3 (No Route to Destination)
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