Pstn Fallback As A Special Case Of Alternative Routing; Relevant Parameters; Call Detail Report - 3Com V7122 User Manual

PSTN Fallback as a Special Case of Alternative Routing

The purpose of the PSTN Fallback feature is to enable the gateway to redirect PSTN
originated calls back to the legacy PSTN network if a destination IP route is found unsuitable
(disallowed) for voice traffic at a specific time.
To enable PSTN fallback, assign the IP address of the gateway itself as an alternative route
to the desired prefixes. Note that calls (now referred to as IP to Tel calls) can be re-routed to
a specific trunk group using the Routing parameters.

Relevant Parameters

The following parameters (described in
Routing mechanism:
AltRoutingTel2IPEnable
AltRoutingTel2IPMode
IPConnQoSMaxAllowedPL
IPConnQoSMaxAllowedDelay

Call Detail Report

The Call Detail Report (CDR) contains vital statistic information on calls made by the
gateway. CDRs are generated at the end and (optionally) at the beginning of each call
(determined by the parameter 'CDRReportLevel') and sent to a Syslog server. The
destination IP address for CDR logs is determined by the parameter 'CDRSyslogServerIP'.
The following CDR fields are supported:
Supported CDR Fields
Table 51
Field Name
Cid
CallId
Trunk
BChan
ConId
TG
EPTyp
Orig
SourceIp
V7122 Gateway User Guide
Table 44) are used to configure the Alternative
Description
Board's Logic Channel Number
H.323/SIP Call Identifier
Physical Trunk Number
Selected B-Channel
H.323/SIP Conference ID
Trunk Group Number
Endpoint Type
Call Originator (IP, Tel)
Source IP Address
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