[Serusers] How can I solve the proble that I can not register SER somewhere?

[zhaomin]

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 at 221.202.129.165]
 2(18465) DEBUG: to body [<sip:test at 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"
'
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