Problem with dropped call

Fall Toll suddenly use the G711 codec Any suggestions? Following is the log that does not understand anything
VERBOSE [116716] logger.c: Capabilities: us - 0x18061e (gsm | ulaw | alaw | G726 | speex | iLBC | h263 | h263p), peer - audio = 0x4 (ulaw) / video = 0x180000 (h263 | h263p), combined - 0x180004 (ulaw | h263 | h263p)
Jan 12 15:03:01 VERBOSE [116716] logger.c: Non-codec capabilities: us - 0x1 (telephone-event), peer - 0x1 (telephone-event), combined - 0x1 (telephone-event)
Jan 12 15:03:01 VERBOSE [116716] chan_sip.c: Oooh, we need to change Our formats since Our peer supports only 0x180004 (ulaw | h263 | h263p) and not 0x2 (gsm)
Jan 12 15:03:01 VERBOSE [120907] logger.c: - Answered SIP/damape-2005-14c7 SIP/12027069-9280
Jan 12 15:03:01 VERBOSE [123695] chan_sip.c: Hangup call SIP/damape-2000-7621, SIP CallID 723f05a87103bcbc3287255d74cfdf8e@67.231.245.210