DGW-L1 User Manual
OpenVox Communication Co.Ltd www.openvox.cn
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Session Timers
Session-Timers feature operates in the following three modes:
originate, Request and run session-timers always; accept, run
session-timers only when requested by other UA; refuse, do not
run session timers in any case.
Minimum Session Minimum session refresh interval in seconds. Default is 90secs.
Maximum
Session Refresh
Interval
Maximum session refresh interval in seconds. Defaults to 1800s.
Session Refresher The session refresher, uac or uas. Defaults to uas.
Table 4-1-6 Definition of Fax Options
Options
Definition
Mode
Working mode T.38 and T.30
Enabled
Enabled
Error Correction Error Correction
Max Datagram
In some cases,T.38 endpoints will provide a T38FaxMxDatagram value (during
T.38 setup) that is based on an incorrect interpretation of the T.38
recommendation, and result in failures because Asterisk does not believe it can
send T.38 packets of a reasonable size to that endpoint (Cisco media gateway are
one example of this situation).In these cases, during a T.38 call you will see
warring messages on The console/in the logs from the Asterisk UDPTL stack
complaining about lack of buffer space to send T.38FaxMaxDatagram value
specified by the other end[point, and use a configured value instead.
Fax Detect
FAX detection will cause the SIP channel to jump to the ‘faX’ extension (if exists)
based one or more events being detected. The events that can be detected are
an incoming CNG tone or an incoming T.38 re-INVITE request.
Fax Activity
activate T38 fax gateway with ‘timeout’ seconds
Fax Timeout
activate T38 fax gateway with ‘timeout’ seconds
Advanced SIP Settings
Networking