Does this help?
2015-03-08 21:07:52.092450 [NOTICE] switch_ivr.c:1854 Transfer sofia/internal/sip:14@10.0.200.14:5060 to XML[13@default]
2015-03-08 21:07:52.112451 [NOTICE] switch_ivr_bridge.c:1608 Hangup sofia/internal/18@192.168.176.6 [CS_EXECUTE] [NORMAL_CLEARING]
2015-03-08 21:07:52.132453 [NOTICE] switch_core_session.c:1633 Session 1 (sofia/internal/18@192.168.176.6) Ended
2015-03-08 21:07:52.132453 [NOTICE] switch_core_session.c:1637 Close Channel sofia/internal/18@192.168.176.6 [CS_DESTROY]
2015-03-08 21:07:52.132453 [INFO] mod_dialplan_xml.c:635 Processing <18>->13 in context default
2015-03-08 21:07:52.132453 [INFO] switch_channel.c:3062 sofia/internal/sip:14@10.0.200.14:5060 Flipping CID from "" <18> to "Outbound Call" <14>
2015-03-08 21:07:52.152454 [NOTICE] switch_channel.c:1055 New Channel sofia/internal/sip:13@10.0.200.13:5060 [8b43385b-ec35-4baf-9ace-395670cd2a98]
2015-03-08 21:07:52.192457 [NOTICE] sofia.c:6716 Ring-Ready sofia/internal/sip:13@10.0.200.13:5060!On Sat, Mar 7, 2015 at 6:03 PM, Paul Atreides <paul.atreides83@googlemail.com> wrote:I am doing the transfer with a grandstream gxp2140They seem do be ignored by the dialplan. Is there a list what kind of values destionation_number can have besides the called numbers?When I do a blind transfer then I want freeswitch to call back the origin who initiated the call.But I am not able the capture the transfer event?<conditionfield="destination_number"expression="^att_xfer$"><conditionfield="destination_number"expression="^is_transfer$">