[Serusers] connection being dropped

Mon Feb 9 23:43:13 CET 2004

OK,

i used ngrep to listen to dst port 5060 and this is what i got. Can 
anyone look at it and try to help me out?

thanks,

interface: eth0 (198.144.32.0/255.255.255.0)
filter: ip and ( port 5060 )
match: dst
#
#
U my_phone_ip:5060 -> ser_server:5060
   INVITE sip:94124818063 at ser_server SIP/2.0..Via: SIP/2.0/UDP 
198.144.32.7
   1;branch=z9hG4bKf88766e9c5b3f444..From: "Srbo" 
<sip:1000 at ser_server>;tag
   =c402c7247006301f..To: <sip:94124818063 at ser_server>..Contact: 
<sip:1000@
   my_phone_ip>..Call-ID: e23ac0a48fed667d at my_phone_ip..CSeq: 53335 
INVITE
   ..User-Agent: Grandstream 1.0.4.39..Max-Forwards: 70..Allow: 
INVITE,ACK,CAN
   CEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE..Content-Type: 
application/sdp.
   .Content-Length: 272....v=0..o=1000 8000 8000 IN IP4 
my_phone_ip..s=SIP C
   all..c=IN IP4 my_phone_ip..t=0 0..m=audio 5004 RTP/AVP 0 8 4 18 2 
15..a=r
   tpmap:0 PCMU/8000..a=rtpmap:8 PCMA/8000..a=rtpmap:4 
G723/8000..a=rtpmap:18
   G729/8000..a=rtpmap:2 G726-32/8000..a=rtpmap:15 
G728/8000..a=ptime:10..
##
U ser_server:5060 -> gateway:5060
   INVITE sip:4124818063 at ser_server SIP/2.0..Record-Route: 
<sip:94124818063
   @ser_server;ftag=c402c7247006301f;lr=on>..Via: SIP/2.0/UDP ser_server
   ;branch=z9hG4bK0321.fd8a5247.0..Via: SIP/2.0/UDP 
my_phone_ip;branch=z9hG4
   bKf88766e9c5b3f444..From: "Srbo" 
<sip:1000 at ser_server>;tag=c402c72470063
   01f..To: <sip:94124818063 at ser_server>..Contact: <sip:1000 at my_phone_ip>
   ..Call-ID: e23ac0a48fed667d at my_phone_ip..CSeq: 53335 
INVITE..User-Agent:
   Grandstream 1.0.4.39..Max-Forwards: 69..Allow: 
INVITE,ACK,CANCEL,BYE,NOTIFY
   ,REFER,OPTIONS,INFO,SUBSCRIBE..Content-Type: 
application/sdp..Content-Lengt
   h: 272....v=0..o=1000 8000 8000 IN IP4 my_phone_ip..s=SIP Call..c=IN 
IP4
   my_phone_ip..t=0 0..m=audio 5004 RTP/AVP 0 8 4 18 2 15..a=rtpmap:0 
PCMU/8
   000..a=rtpmap:8 PCMA/8000..a=rtpmap:4 G723/8000..a=rtpmap:18 
G729/8000..a=r
   tpmap:2 G726-32/8000..a=rtpmap:15 G728/8000..a=ptime:10..
####
U my_phone_ip:5060 -> ser_server:5060
   ACK sip:4124818063 at ser_server:5060;maddr=gateway SIP/2.0..Via: SIP
   /2.0/UDP my_phone_ip;branch=z9hG4bK5dd5e7460a81c8ef..Route: 
<sip:94124818
   063 at ser_server;ftag=c402c7247006301f;lr=on>..From: "Srbo" 
<sip:1000 at 198.
   144.32.67>;tag=c402c7247006301f..To: 
<sip:94124818063 at ser_server>;tag=00
   11-0024-EA84E121..Contact: <sip:1000 at my_phone_ip>..Call-ID: 
e23ac0a48fed6
   67d at my_phone_ip..CSeq: 53335 ACK..User-Agent: Grandstream 
1.0.4.39..Max-F
   orwards: 70..Allow: 
INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRI
   BE..Content-Length: 0....
#
U ser_server:5060 -> voicemail:5090
   ACK sip:4124818063 at voicemail:5090;maddr=gateway SIP/2.0..Record-R
   oute: <sip:4124818063 at ser_server;ftag=c402c7247006301f;lr=on>..Via: 
SIP/
   2.0/UDP ser_server;branch=0..Via: SIP/2.0/UDP my_phone_ip;branch=z9hG4
   bK5dd5e7460a81c8ef..From: "Srbo" 
<sip:1000 at ser_server>;tag=c402c72470063
   01f..To: 
<sip:94124818063 at ser_server>;tag=0011-0024-EA84E121..Contact: <
   sip:1000 at my_phone_ip>..Call-ID: e23ac0a48fed667d at my_phone_ip..CSeq: 
533
   35 ACK..User-Agent: Grandstream 1.0.4.39..Max-Forwards: 69..Allow: 
INVITE,A
   CK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE..Content-Length: 
0....
#############
U my_phone_ip:5060 -> ser_server:5060
   SIP/2.0 200 OK..Via: SIP/2.0/UDP 
ser_server;branch=z9hG4bK221a.a8d20722.
   0..Via: SIP/2.0/UDP gateway:5060;branch=z9hG4bK-vega1-0007-0000-0028-
   4D0F43B1..Record-Route: 
<sip:1000 at ser_server;ftag=0011-0024-EA84E121;lr=
   on>..From: <sip:94124818063 at ser_server>;tag=0011-0024-EA84E121..To: 
"Srb
   o" <sip:1000 at ser_server>;tag=c402c7247006301f..Call-ID: 
e23ac0a48fed667d
   @my_phone_ip..CSeq: 20361664 BYE..User-Agent: Grandstream 
1.0.4.39..Conta
   ct: <sip:1000 at my_phone_ip>..Allow: 
INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPT
   IONS,INFO,SUBSCRIBE..Content-Length: 0....
#
U ser_server:5060 -> gateway:5060
   SIP/2.0 200 OK..Via: SIP/2.0/UDP gateway:5060;branch=z9hG4bK-vega1-00
   07-0000-0028-4D0F43B1..Record-Route: 
<sip:1000 at ser_server;ftag=0011-0024
   -EA84E121;lr=on>..From: 
<sip:94124818063 at ser_server>;tag=0011-0024-EA84E
   121..To: "Srbo" <sip:1000 at ser_server>;tag=c402c7247006301f..Call-ID: 
e23
   ac0a48fed667d at my_phone_ip..CSeq: 20361664 BYE..User-Agent: 
Grandstream 1.
   0.4.39..Contact: <sip:1000 at my_phone_ip>..Allow: 
INVITE,ACK,CANCEL,BYE,NOT
   IFY,REFER,OPTIONS,INFO,SUBSCRIBE..Content-Length: 0....

On Monday, February 9, 2004, at 02:31  PM, Jan Janak wrote:

> On 09-02 14:24, Srbislav Cvetkovic wrote:
>> Hello,
>>
>> Have any of you had an experience with Grandstream BudgeTone phones? 
>> My
>> outgoing calls are being dropped after 16 seconds. My system looks 
>> like
>> this:
>>
>> Grandstream phone --->
>> 					SER sip proxy ----> VEGA 50 SIP
>> 					gateway.
>> x-lite softphone		---->
>>
>> When i make an outgoing call from my softphone it works fine. But not
>> with ip phone. After 16 sec. my VEGA gateway disconnects the call.
>> After talking to VEGA customer support they told me that my ip phone 
>> is
>> not replying back to VEGA's ACK requests, and eventualy after 26 sec.
>> VEGA dropps the call. Does anyone out there have a similar setup or
>> ever experienced such a problem? I am running the latest firmware on 
>> my
>> ip phone.
>
>   There is no reply to ACK and the gateway does not send any ACK in 
> this
>   case. The ACK is generated by Grandstram and x-lite. Use ngrep (or
>   similar tool) to check whether the grandstream phone gets 200 OK and
>   generates ACK.
>
>     Jan.
>

  Srbo Cvetkovic                  | CityNet, Inc.		
  srbo at city-net.com            | Pittsburgh, PA	
  voice: 412.481.5406         | fax: 412.431.1315