A user recently notified me that whenever they attempt to dial into a conference call at another company, the phone call would get dropped after 5 seconds or so. They also indicated that when the same number is called using a cell phone, there were no issues. I found the following entries in log file.
[May 4 11:58:20] VERBOSE app_dial.c: -- DAHDI/1-1 is ringing
[May 4 11:58:20] VERBOSE app_dial.c: -- DAHDI/1-1 answered SIP/145-00000005
[May 4 11:58:24] WARNING rtp.c: Don't know how to represent 'f'
[May 4 11:58:24] VERBOSE chan_dahdi.c: -- Redirecting DAHDI/1-1 to fax extension
[May 4 11:58:24] VERBOSE pbx.c: -- Executing [h@macro-dialout-trunk:1] Macro("SIP/145-00000005", "hangupcall,") in new stack
[May 4 11:58:24] VERBOSE pbx.c: -- Executing [s@macro-hangupcall:1] GotoIf("SIP/145-00000005", "1?theend") in new stack
I have not been able to determine a solution. Any insight or suggestions on solving this problem are appreciated.
(Using FreePBX v2.9; Asterisk v220.127.116.11.1; CentOS 5.5 (Final); Sangoma A102)