when using transfer on the phones, the call will be successfully transfered to the other phone, but it doesn't display the orinal caller-id, but keeps instead that id of the transfering phone. as I can see on the net, the refer-to info from the transfering phone to the server looks good: REFER sip:mod_sofia@192.168.1.1:5060 SIP/2.0 Via: SIP/2.0/UDP 192.168.1.3:5060;branch=z9hG4bK850879522;rport From: <sip:24@192.168.1.3:5060>;tag=27328813 To: "27" <sip:27@pbx.priv>;tag=Net73KDB46X6r Call-ID: 33f2a7ee-9a39-1233-eab8-7674fbcada00 CSeq: 77522256 REFER Contact: <sip:24@192.168.1.3:5060> Max-Forwards: 70 Supported: replaces, path, timer Refer-To: <sip:20@pbx.priv?Replaces=1999853991-5060-136%40BJC.BGI.CBI.EC%3Bto-tag%3DQ0cS79ejyracg%3Bfrom-tag%3D219451532> Referred-By: <sip:24@pbx.priv> Allow: INVITE, ACK, OPTIONS, CANCEL, BYE, SUBSCRIBE, NOTIFY, INFO, REFER, UPDATE, MESSAGE Content-Length: 0 and freeswitch sends an ACCEPTED-msg for this REFER in the freeswitch.log I found entries like: [ALERT] sofia.c:1198 sofia_update_callee_id() sofia/internal/u620@192.168.1.4:5060 Same Callee ID "Outbound Call" <20> which leads to the situation, that no display-update will be send. unfortunately the REFER-handling of freeswitch doesn't seem to offer any possibility to intervene for debugging the available variables, so I have no idea, why freeswitch sees equal callee-ids. any suggestions how to look deeper or how to modifier the variables so that the update will be sent? regards w.