-- Executing Dial("SIP/501-3a12", "SIP/astrasip/088880003") in new stack
    -- Called astrasip/088880003
Oct 19 20:50:10 WARNING[1735]: channel.c:2188 ast_channel_make_compatible: No path to translate from SIP/astrasip-b3f2(4) to SIP/501-3a12(256)
    -- SIP/astrasip-b3f2 is making progress passing it to SIP/501-3a12
    -- SIP/astrasip-b3f2 answered SIP/501-3a12
Oct 19 20:50:11 WARNING[1735]: channel.c:2188 ast_channel_make_compatible: No path to translate from SIP/501-3a12(256) to SIP/astrasip-b3f2(8)
Oct 19 20:50:11 WARNING[1735]: app_dial.c:1042 dial_exec: Had to drop call because I couldn't make SIP/501-3a12 compatible with SIP/astrasip-b3f2
  == Spawn extension (default, 088880003, 1) exited non-zero on 'SIP/501-3a12'