[Spce-user] calls dropped after 30 seconds

[Jirka Jirout]

Hello,

as far as I can tell, the routers are innocent as this behaviour is consistent with clients on many networks (cellular, adsl... in several countries). As for the router on the server side, it is supposed to only do 1:1 NAT without inspection or any other operations.

> I would need to see the 200 OK from called party and ACK from the
> calling party (or complete trace of this call from 'ngrep-sip b').

this is the  200 OK

SIP/2.0 200 OK
Via: SIP/2.0/UDP crypto2-private;branch=z9hG4bKf323.d7e892cab9a88164ada63e635f3bf6c3.0
From: "1004"<sip:1004 at crypto.DOMAIN.cz>;tag=069ABE71-50065AB8000D471E-0F751700
To: <sip:1001 at crypto.DOMAIN.cz>;tag=891659714
Contact: <sip:1001 at 193.138.154.45:61335;transport=udp>
Call-ID: 4367949c-7aae-3640-fcbd-8df920741106_b2b-1
CSeq: 10 INVITE
Content-Type: application/sdp
Content-Length: 264
Via: SIP/2.0/UDP 127.0.0.1:5080;rport=5080;branch=z9hG4bKEZIbgaXD
Record-Route: <sip:crypto2-private:5060;lr;r2=on;ngcplb=yes>
Record-Route: <sip:127.0.0.1:5060;lr;r2=on>
Allow: ACK, BYE, CANCEL, INVITE, MESSAGE, NOTIFY, OPTIONS, PRACK, REFER, UPDATE

v=0
o=doubango 1983 678901 IN IP4 193.138.154.45
s=-
c=IN IP4 193.138.154.45
t=0 0
m=audio 10336 RTP/AVP 8 0 101
c=IN IP4 193.138.154.45
a=ptime:20
a=rtpmap:8 PCMA/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=sendrecv

and here the ACK

ACK sip:ngcp-lb at crypto2-private:5060 SIP/2.0
Via: SIP/2.0/UDP 217.77.165.60:40294;branch=z9hG4bK118652827
From: <sip:1004 at crypto.DOMAIN.cz>;tag=928588185
To: <sip:1001 at crypto.DOMAIN.cz>;tag=7AD109A0-50065AB8000D4617-0ED47700
Contact: <sip:1004 at 217.77.165.60:32433;transport=udp>;+g.oma.sip-im;language="en,fr";+g.3gpp.icsi-ref="urn%3Aurn-7%3A3gpp-service.ims.icsi.mmtel"
Call-ID: 4367949c-7aae-3640-fcbd-8df920741106
CSeq: 1325196475 ACK
Max-Forwards: 70
Proxy-Authorization: Digest username="1004",realm="crypto.DOMAIN.cz",nonce="UAZb5FAGWrjrKPAPyB6cs99cHi1hpDJJ",uri="sip:ngcp-lb at PUBLIC_IP_OF_THE_SERVER:5060",response="e0cf14ea8a03ea14ec31c9793dd3a404",algorithm=MD5
Route: <sip:crypto2-private:5060;lr;r2=on;nat=yes>
Route: <sip:127.0.0.1:5060;lr;r2=on;nat=yes;ngcplb=yes>
Route: <sip:127.0.0.1:5062;lr;ftag=928588185;did=967.5ab86904;mpd=ii;rtpprx=yes;vsf=dU5ZM1lleEZ6TkxNaUpYTlBkZk11TlkzWWV4>
Accept-Contact: *;+g.3gpp.icsi-ref="urn%3Aurn-7%3A3gpp-service.ims.icsi.mmtel"
P-Preferred-Service: urn:urn-7:3gpp-service.ims.icsi.mmtel
Allow: INVITE, ACK, CANCEL, BYE, MESSAGE, OPTIONS, NOTIFY, PRACK, UPDATE, REFER
Privacy: none
P-Access-Network-Info: ADSL;utran-cell-id-3gpp=00000000
User-Agent: IM-client/OMA1.0 ios-ngn-stack/v00 (doubango r000)
Content-Length: 0


regards, jj