hello! I meet a strange circs in configure and build SER .My SER server have a public IP at internet. I can register SER in my office, My office has LAN+CISCO router and NAT with 10.1.0.0 network .but I can not register at my home ,My home is ADSL with router and NAT include 192.169.0.0 network, when I used a sipphone to register the proxy,show me : login fail.waiting server respond overtime! Some place was happen this kind of circs when I register into SER. Under list is debug of SER output section.Where is problem happen?. anyones can tell me what's wrong I should to solve it? Thankx ZhaoMin 2(18465) SIP Request: 2(18465) method: <REGISTER> 2(18465) uri: sip:221.202.129.165 2(18465) version: <SIP/2.0> 2(18465) parse_headers: flags=1 2(18465) end of header reached, state=5 2(18465) parse_headers: Via found, flags=1 2(18465) parse_headers: this is the first via 2(18465) After parse_msg... 2(18465) preparing to run routing scripts... 2(18465) DEBUG : is_maxfwd_present: searching for max_forwards header 2(18465) parse_headers: flags=128 2(18465) DEBUG: is_maxfwd_present: value = 70 2(18465) parse_headers: flags=8 2(18465) DEBUG: add_param: tag=cd24dfb7f7f349a6ac20a11f8f9e3756 2(18465) DEBUG: add_param: epid=474cc9ad8f 2(18465) end of header reached, state=29 2(18465) parse_headers: flags=256 2(18465) end of header reached, state=9 2(18465) DEBUG: get_hdr_field: <To> [28]; uri=[sip:test@221.202.129.165] 2(18465) DEBUG: to body [sip:test@221.202.129.165] 2(18465) get_hdr_field: cseq <CSeq>: <2> <REGISTER> 2(18465) DEBUG: get_hdr_body : content_length=0 2(18465) found end of header 2(18465) find_first_route(): No Route headers found 2(18465) loose_route(): There is no Route HF 2(18465) check_self - checking if host==us: 15==15 && [221.202.129.165] == [221.202.129.165] 2(18465) check_self - checking if port 5060 matches port 5060 2(18465) parse_headers: flags=4096 2(18465) pre_auth(): Credentials with given realm not found 2(18465) build_auth_hf(): 'WWW-Authenticate: Digest realm="jzmv.com", once="424409513d6e5a7fd39521d4a44978d1cc99df8a" '