Asterisk*CLI>
    -- Executing Dial("SIP/2002-3528", "SIP/2001|20") in new stack
    -- Called 2001
May 15 19:35:38 WARNING[4546]: channel.c:2155 ast_channel_make_compatible: No path to translate from SIP/2001-a5f2(4) to SIP/2002-3528(256)
    -- SIP/2001-a5f2 is ringing
    -- SIP/2001-a5f2 answered SIP/2002-3528
May 15 19:35:43 WARNING[4546]: channel.c:2155 ast_channel_make_compatible: No path to translate from SIP/2002-3528(256) to SIP/2001-a5f2(4)
May 15 19:35:43 WARNING[4546]: app_dial.c:1022 dial_exec: Had to drop call because I couldn't make SIP/2002-3528 compatible with SIP/2001-a5f2
  == Spawn extension (from-sip, 2001, 1) exited non-zero on 'SIP/2002-3528'
Asterisk*CLI>