-- Executing Dial("SIP/3004-3abb", "SIP/3005|20|tT")
Mar  5 17:51:38 WARNING[29226]: channel.c:284 ast_best_codec: Don't know any of 0x80000 formats
    -- Called 3005
Mar  5 17:51:38 WARNING[29226]: channel.c:2170 ast_channel_make_compatible: No path to translate from SIP/3005-85f3(524288) to SIP/3004-3abb(256)
Mar  5 17:51:38 WARNING[29226]: chan_sip.c:1922 sip_write: Asked to transmit frame type 256, while native formats is 524288 (read/write = 0/0)
Mar  5 17:51:38 WARNING[29226]: chan_sip.c:1922 sip_write: Asked to transmit frame type 256, while native formats is 524288 (read/write = 0/0)
Mar  5 17:51:38 WARNING[29226]: chan_sip.c:1922 sip_write: Asked to transmit frame type 256, while native formats is 524288 (read/write = 0/0)
Mar  5 17:51:38 WARNING[29226]: chan_sip.c:1922 sip_write: Asked to transmit frame type 256, while native formats is 524288 (read/write = 0/0)
Mar  5 17:51:38 WARNING[29226]: chan_sip.c:1922 sip_write: Asked to transmit frame type 256, while native formats is 524288 (read/write = 0/0)
Mar  5 17:51:38 WARNING[29226]: chan_sip.c:1922 sip_write: Asked to transmit frame type 256, while native formats is 524288 (read/write = 0/0)
Mar  5 17:51:38 WARNING[29226]: chan_sip.c:1922 sip_write: Asked to transmit frame type 256, while native formats is 524288 (read/write = 0/0)
Mar  5 17:51:38 WARNING[29226]: chan_sip.c:1922 sip_write: Asked to transmit frame type 256, while native formats is 524288 (read/write = 0/0)
Mar  5 17:51:38 WARNING[29226]: chan_sip.c:1922 sip_write: Asked to transmit frame type 256, while native formats is 524288 (read/write = 0/0)
Mar  5 17:51:38 WARNING[29226]: chan_sip.c:1922 sip_write: Asked to transmit frame type 256, while native formats is 524288 (read/write = 0/0)
Mar  5 17:51:38 WARNING[29226]: chan_sip.c:1922 sip_write: Asked to transmit frame type 256, while native formats is 524288 (read/write = 0/0)
Mar  5 17:51:38 WARNING[29226]: chan_sip.c:1922 sip_write: Asked to transmit frame type 256, while native formats is 524288 (read/write = 0/0)
Mar  5 17:51:38 WARNING[29226]: chan_sip.c:1922 sip_write: Asked to transmit frame type 256, while native formats is 524288 (read/write = 0/0)
Mar  5 17:51:38 WARNING[29226]: chan_sip.c:1922 sip_write: Asked to transmit frame type 256, while native formats is 524288 (read/write = 0/0)
Mar  5 17:51:38 WARNING[29226]: chan_sip.c:1922 sip_write: Asked to transmit frame type 256, while native formats is 524288 (read/write = 0/0)
    -- Got SIP response 488 "Not Acceptable Here" back from 82.92.73.185
Mar  5 17:51:38 WARNING[29226]: app_dial.c:577 wait_for_answer: Unable to forward voice
  == No one is available to answer at this time (1:0/0/0)
    -- Executing Voicemail("SIP/3004-3abb", "u3005")
Mar  5 17:51:38 WARNING[29226]: app_voicemail.c:2227 leave_voicemail: No entry in voicemail config file for '3005'
    -- Executing Hangup("SIP/3004-3abb", "")
  == Spawn extension (dialtone, 3005, 7) exited non-zero on 'SIP/3004-3abb'