I didn't even know there were choices. It looks like the default from zconfig.h would be used which appears to be ECHO_CAN_MARK3. I guess it would be nice if these were config options in the Zaptel port. Who are Mark and Steve and what do they know about echo cancellation?
Try ECHO_CAN_MG2 this works the best for us on Telstra/Optus lines.
The other problem we've had is one of the TDM FXO ports getting wedged somehow and not answering any calls until a restart of the zaptel driver and/or whole machine. That happened about 2 or 3 times now over 6 months.
What size power supply is in the machine? -- Jeremy Bogan VoiceBox Communications [ [EMAIL PROTECTED] ] _______________________________________________ Asterisk-BSD mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-bsd

