<div dir="ltr"><div><div><span style="font-size:12.8000001907349px">I just found that this error only occurs on mobile network connections, not on Wi-Fi.  So something in the mobile network IP may be malforming the via header?</span><br></div><div><br></div><div>ERROR:core:parse_via: bad port</div><div>ERROR:core:parse_via:  &lt;SIP/2.0/TCP 10.31.188.230:37030:-1;rport;branch=z9hG4bK62163#015#012Max-Forwards: 70#015#012To: &lt;<a href="mailto:sip%3A%2B447984977774@server0.domain.com">sip:+447984977774@server0.domain.com</a>;transport=tcp&gt;#015#012From: &lt;<a href="mailto:sip%3A%2B447479189410@server0.domain.com">sip:+447479189410@server0.domain.com</a>&gt;;tag=z9hG4bK88229229#015#012Call-ID: <a href="http://598445986695@10.31.188.230#015#012CSeq">598445986695@10.31.188.230#015#012CSeq</a>: 1 CANCEL#015#012Contact: &lt;sip:+447479189410@10.31.188.230:37030;transport=tcp&gt;#015#012Expires: 3600#015#012User-Agent: Glowcall/1.3.4/MP-S168#015#012Content-Length: 0#015#012#015#012&gt;</div><div>ERROR:core:parse_via: parsed so far:&lt;SIP/2.0/TCP <a href="http://10.31.188.230:37030">10.31.188.230:37030</a>&gt;</div><div>ERROR:core:get_hdr_field: bad via</div><div>DBG:core:set_err_info: ec: 1, el: 3, ei: &#39;error parsing Via&#39;</div><div>DBG:core:get_hdr_field: error exit</div><div>INFO:core:parse_headers: bad header field</div><div>ERROR:core:parse_msg: message=&lt;CANCEL <a href="mailto:sip%3A%2B447984977774@server0.domain.com">sip:+447984977774@server0.domain.com</a>;transport=tcp SIP/2.0#015#012Via: SIP/2.0/TCP 10.31.188.230:37030:-1;rport;branch=z9hG4bK62163#015#012Max-Forwards: 70#015#012To: &lt;<a href="mailto:sip%3A%2B447984977774@server0.domain.com">sip:+447984977774@server0.domain.com</a>;transport=tcp&gt;#015#012From: &lt;<a href="mailto:sip%3A%2B447479189410@server0.domain.com">sip:+447479189410@server0.domain.com</a>&gt;;tag=z9hG4bK88229229#015#012Call-ID: <a href="http://598445986695@10.31.188.230#015#012CSeq">598445986695@10.31.188.230#015#012CSeq</a>: 1 CANCEL#015#012Contact: &lt;sip:+447479189410@10.31.188.230:37030;transport=tcp&gt;#015#012Expires: 3600#015#012User-Agent: Glowcall/1.3.4/MP-S168#015#012Content-Length: 0#015#012#015#012&gt;</div><div>ERROR:core:receive_msg: Unable to parse msg received from [<a href="http://188.29.165.19:55041">188.29.165.19:55041</a>]</div><div>ERROR:core:tcp_handle_req: receive_msg failed</div></div><div><br></div></div>