[asterisk-users] Data calls through TDM2400E

[Stephen Kratzer]

Hello. Has anyone been able to successfully make data (dialup modem) calls 
through a TDM2400E? We're able to make fax and credit card calls fine, but 
cannot successfully make modem calls using a 56K modem connected to a patch 
panel connected to an FXS port which then gets bridged to an FXO port 
connected directly to a phone line. We have 'echocancelwhenbridged=no' set 
in /etc/asterisk/zapata.conf.  We're dialing into a Lucent TNT which drops 
the call with a cause code of 11 (DCD-Detected-Then-Inactive. The modem 
detected DCD, but became inactive). The modem call works fine when connected 
directly to a phone line. Is there anything else that I can do to get this 
working? Thanks.

Stephen Kratzer
Network Engineer
CTI Networks, Inc.