hi, i've a problem with My sip gateway's provider who use a communigate server.   when i call another phone who use the same provider and the called phone try to transfer call, my snomone receive a refer from communigate like this:   REFER sip:trunk@1.1.1.1:5060;transport=udp;maddr=1.1.1.1 SIP/2.0 Via: SIP/2.0/UDP 2.2.2.2:5060;branch=z9hG4bK927820-jizasgv;cgp=fai.fr;rport P-CGP-Identity: grp_csctechnique@fai.eu Max-Forwards: 70 From: <sip:0101010101@myname.fai.eu>;tag=3017C508-247538-F