Hello all, I am using HALF DUPLEX modem for TAPI call.the following message is displayed while i am starting the AsteriskNOTICE[1416] chan_tapi.c: Channel format set to ULAW\' ERROR[1416] win32_tapi.c: TAPI Error: 80000023 (HCALL 0x0) on lineGetID . If i will receive an Inbound call to modem, i will answer that call............and put an wait for infinite time.The caller(Who will originate a call) hangup that time TAPI will not receive an EVENT(HangUP).For DTMF issue i am using READ command to receive an DTMF tone..........This message is received, but consistently i am not getting the Entered DIgits.... If i will use an FULL DUPLEX modem can i solve the above problem.........please guide me its an urgent issue...................Regards,Pandi.P -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20070504/1f6496fc/attachment.htm