title: Call works only one-way , not both-ways
body: <p>I am trying to make an internal call from extension 1000 to 1001 and backwaards. 1000->1001 works and i can answer/hangup. 1001->1000 doesnt work. Can anyone assist me please ? Thank you. Here's the log:</p>
  
  <pre><code>freeswitch@ubuntu&gt; 2015-10-24 19:54:48.252475 [NOTICE] switch_channel.c:1053 New Channel sofia/internal/1001@192.168.20.199 [81ce2ac0-dbf9-4102-9885-a0a4c6e0541e]
  2015-10-24 19:54:48.272476 [INFO] mod_dialplan_xml.c:558 Processing 1001 &lt;1001&gt;-&gt;1000 in context default
  2015-10-24 19:54:48.272476 [INFO] switch_ivr_async.c:3631 Bound B-Leg: *1 execute_extension::dx XML features
  2015-10-24 19:54:48.272476 [INFO] switch_ivr_async.c:3631 Bound B-Leg: *2 record_session::/usr/local/freeswitch/recordings/1001.2015-10-24-19-54-48.wav
  2015-10-24 19:54:48.272476 [INFO] switch_ivr_async.c:3631 Bound B-Leg: *3 execute_extension::cf XML features
  2015-10-24 19:54:48.272476 [INFO] switch_ivr_async.c:3631 Bound B-Leg: *4 execute_extension::att_xfer XML features
  2015-10-24 19:54:48.292436 [NOTICE] switch_channel.c:1053 New Channel sofia/internal/sip:1000@147.229.148.23:52888 [78eeebd6-be44-412b-8fe7-08ce94b21836]
  2015-10-24 19:54:48.292436 [NOTICE] sofia.c:7112 Hangup sofia/internal/sip:1000@147.229.148.23:52888 [CS_CONSUME_MEDIA] [NORMAL_TEMPORARY_FAILURE]
  2015-10-24 19:54:48.292436 [NOTICE] switch_ivr_originate.c:2707 Cannot create outgoing channel of type [user] cause: [NORMAL_TEMPORARY_FAILURE]
  2015-10-24 19:54:48.292436 [INFO] mod_dptools.c:3234 Originate Failed.  Cause: NORMAL_TEMPORARY_FAILURE
  2015-10-24 19:54:48.292436 [NOTICE] switch_core_session.c:1632 Session 24 (sofia/internal/sip:1000@147.229.148.23:52888) Ended
  2015-10-24 19:54:48.292436 [NOTICE] switch_core_session.c:1636 Close Channel sofia/internal/sip:1000@147.229.148.23:52888 [CS_DESTROY]
  2015-10-24 19:54:48.292436 [NOTICE] sofia_media.c:92 Pre-Answer sofia/internal/1001@192.168.20.199!
  2015-10-24 19:54:48.292436 [NOTICE] mod_dptools.c:1258 Channel [sofia/internal/1001@192.168.20.199] has been answered
  2015-10-24 19:54:49.312660 [NOTICE] switch_channel.c:1053 New Channel loopback/app=voicemail:default 192.168.20.199 1000-a [ff3ba363-2c45-4466-b6d1-d05f507b882e]
  2015-10-24 19:54:49.312660 [NOTICE] switch_channel.c:1051 Rename Channel loopback/app=voicemail:default 192.168.20.199 1000-a-&gt;loopback/voicemail-a [ff3ba363-2c45-4466-b6d1-d05f507b882e]
  2015-10-24 19:54:49.312660 [NOTICE] switch_channel.c:1053 New Channel loopback/voicemail-b [15c11755-1891-4530-ac42-4f68b21c4abf]
  2015-10-24 19:54:49.312660 [NOTICE] mod_loopback.c:947 Pre-Answer loopback/voicemail-a!
  2015-10-24 19:54:49.312660 [NOTICE] mod_dptools.c:1293 Pre-Answer loopback/voicemail-b!
  2015-10-24 19:54:52.452289 [NOTICE] sofia.c:926 Hangup sofia/internal/1001@192.168.20.199 [CS_EXECUTE] [NORMAL_CLEARING]
  2015-10-24 19:54:52.452289 [NOTICE] switch_ivr_bridge.c:751 Hangup loopback/voicemail-a [CS_EXCHANGE_MEDIA] [ORIGINATOR_CANCEL]
  2015-10-24 19:54:52.452289 [NOTICE] mod_loopback.c:553 Hangup loopback/voicemail-b [CS_EXECUTE] [ORIGINATOR_CANCEL]
  2015-10-24 19:54:52.452289 [NOTICE] switch_core_session.c:1632 Session 26 (loopback/voicemail-b) Ended
  2015-10-24 19:54:52.452289 [NOTICE] switch_core_session.c:1636 Close Channel loopback/voicemail-b [CS_DESTROY]
  2015-10-24 19:54:52.452289 [NOTICE] switch_core_session.c:1632 Session 23 (sofia/internal/1001@192.168.20.199) Ended
  2015-10-24 19:54:52.452289 [NOTICE] switch_core_session.c:1636 Close Channel sofia/internal/1001@192.168.20.199 [CS_DESTROY]
  2015-10-24 19:54:52.452289 [NOTICE] switch_core_session.c:1632 Session 25 (loopback/voicemail-a) Ended
  2015-10-24 19:54:52.452289 [NOTICE] switch_core_session.c:1636 Close Channel loopback/voicemail-a [CS_DESTROY]
  </code></pre>