[Serusers] SIP/2.0 477 error on sending to next hop occurred

hi can anyone explain me why i get the error mentioned in below trace. Please let me know how can i resolve this. SIP/2.0 477 Unfortunately error on sending to next hop occurred (477/TM) Call-ID: 21b297bc85242e507848f6c297cf4c3f(a)69.229.23.54 CSeq: 1 REGISTER From: "test11" <sip:test11@iptel.org:5060;transport=tcp>;tag=6626965 To: "test11" <sip:test11@iptel.org:5060;transport=tcp>;tag=321967ba5deb3e7f484a2df055818800-a111 Via: SIP/2.0/TCP 69.229.23.54:5060;branch=z9hG4bK67a6e74fa0f95b090b70ff5d3d969e73;rport=6719 Server: Sip EXpress router (0.9.0udpfifo (i386/linux)) Warning: 392 195.37.77.99:5060 "Noisy feedback tells: pid=17793 req_src_ip=69.229.23.54 req_src_port=6719 in_uri=sip:69.229.23.57:5060;transport=tcp out_uri=sip:69.229.23.57:5060;transport=tcp via_cnt==1" Content-Length: 0 Thanks Rajesh --------------------------------- Enjoy this Diwali with Y! India Click here