-- Executing Dial("SIP/ast.d2visp.com-0814b270", "SIP/14024645971@isphone|30") in new stack
    -- Called 14024645971@isphone
    -- SIP/isphone-c692 is making progress passing it to SIP/ast.d2visp.com-0814b270
    -- SIP/isphone-c692 is ringing
Nov  9 16:46:17 NOTICE[1589]: rtp.c:298 process_rfc3389: RFC3389 support incomplete.  Turn off on client if possible
    -- SIP/isphone-c692 answered SIP/ast.d2visp.com-0814b270
    -- Attempting native bridge of SIP/ast.d2visp.com-0814b270 and SIP/isphone-c692
Nov  9 16:46:20 NOTICE[1589]: chan_sip.c:2792 process_sdp: No compatible codecs!
    -- Started music on hold, class 'default', on SIP/isphone-c692
    -- Stopped music on hold on SIP/isphone-c692
  == Spawn extension (ser-in, 14024645971, 1) exited non-zero on 'SIP/ast.d2visp.com-0814b270'
Nov  9 16:46:43 NOTICE[1589]: res_musiconhold.c:309 monmp3thread: Request to schedule in the past?!?!
ast*CLI>