I'm trying to make a call from an IAXPhone client - through the * PBX to an 888 number using the IAXTel link. I'm using the basic conf files for extensions and iax. I get successfully connected (at the "Attempting native bridge" line of the output) and am then able to talk both ways for 20 to 30 seconds and then the IAX phone appears off line. If I wait on the PSTN line for another 30-45 seconds, I get the Hungup lines in the trace. I've tried jitterbuffer=no and then jitterbuffer=yes with dropcount=3 maxjitterbuffer=500 maxexcessbuffer=100 (defaults in the iax.conf) and neither setting worked. What is wrong? TIA for any help!!!!!! Ben Here is the console output: -- Accepting AUTHENTICATED call from 192.168.1.103, requested format = 2, actual format = 2 -- Executing Dial("IAX2[2002@2002]/1", "IAX2/username:password@iaxtel.com/1888nnnnnnn@iaxtel") in new stack -- Called username:password@iaxtel.com/1888nnnnnnn@iaxtel -- Call accepted by 69.73.19.178 (format GSM) -- Format for call is GSM -- IAX2[69.73.19.178:4569]/3 stopped sounds -- IAX2[69.73.19.178:4569]/3 stopped sounds -- IAX2[69.73.19.178:4569]/3 answered IAX2[2002@2002]/1 -- Attempting native bridge of IAX2[2002@2002]/1 and IAX2[69.73.19.178:4569]/3 May 18 21:45:35 WARNING[1133718208]: chan_iax2.c:1136 attempt_transmit: Max retries exceeded to host 192.168.1.103 on IAX2[2002@2002]/1 (type = 6, subclass = 11, ts=14828, seqno=11) -- Hungup 'IAX2[69.73.19.178:4569]/3' == Spawn extension (from-iax, 1888nnnnnnn, 1) exited non-zero on 'IAX2[2002@2002]/1' -- Hungup 'IAX2[2002@2002]/1'