problem with Obi200 and sip phone

mec755 · September 27, 2014, 07:45:46 AM

Hi,

I have a strange problem right now:
I started some days ago with a Obi110, configured it for GV and used the second account to connect with my Grandstream GXP2000. It was very easy and worked fine. I could receive and make calls from the SIP phone using GV.
However, I used the Obi110 only temporary and have now the Obi200. With this one I tried to do exactly the same - using sp1 with GV and sp2 to connect with the SIP phone. I think I did exactly the same changes which I did for the OBI110, gave the OBI200 the same IP the Obi110 used before, but it doesn't work.
Using a analog phone on the phone line, I can receive and make calls using sp1 - so the GV configuration should be fine. When I get an incoming call, the sip phone rings but when I take the call nothing happens except that the sip phone stops to ring and other phones still ring. If I don't answer the call on any other phone then the SIP phone shows after a while 1 more missed call. If I try to make an outgoing call from the sip phone I only get an error 404, number not found.

Here's the configuration with the changes I made compared to default:

IP 192.168.1.138

ITSP Profile B General
Name GXP

ITSP Profile B SIP
ProxyServer 192.168.1.103
ProxyServerPort 5062
RegistrarServerPort 5062
OutboundProxy 192.168.1.103
OutboundProxyPort 5062
X_SpoofCallerID checked

SP1 Service
X_InboundCallRoute {sp2(GXP),ph}

SP2 Service
X_ServProvProfile B
X_InboundCallRoute GXP>(xx.):sp1
X_RegisterEnable unchecked
X_KeepAliveServerPort 5062
X_UserAgentPort 5062
X_Proxy checked

AuthUserName GXP

GXP2000 configuration for line2:
IP 192.168.1.103
Port 5062
SIP Server 192.168.1.138:5062
Outbound Proxy 192.168.1.138:5062
SIP ID GXP
SIP Register No

As I mentioned, it worked perfectly with the Obi110, but I can't get it to work with the Obi200. Seems there are much more settings in there than for the Obi110. Anyone has an idea what could be wrong here?

ianobi · September 27, 2014, 09:04:00 AM

I would try using a different port for the OBi200 sp2 and the GXP2000. Try something like:

SP2 Service
X_UserAgentPort 5091

GXP2000 configuration for line2:
SIP Server 192.168.1.138:5091
Outbound Proxy 192.168.1.138:5091

The default port for the your old OBi110 sp2 would have been 5061. Any port is ok so long as you use it consistently.

mec755 · September 27, 2014, 10:35:17 AM

Still not working.
I switched syslog on and see the following for it (phone number changed to xxxxx, it also still says obi110.dyndns.org but it's the obi200):

Sep 27 10:23:43 192.168.1.103 GS_LOG: [00:0B:82:06:9B:93][000][FF71][01020503] Send SIP message: INVITE To 192.168.1.138:5091, sip_handle: 0x0052F8CA

Sep 27 10:23:43 obi110.dyndns.org OBI: RxFrom:c0a80167:5062

Sep 27 10:23:43 obi110.dyndns.org INVITE sip:xxxxx@192.168.1.138:5091 SIP/2.0
Via: SIP/2.0/UDP 192.168.1.103:5062;branch=z9hG4bK0bece92e2d10962c
From: "Ebert" <sip:GXP@192.168.1.138:5091>;tag=d25465983ffa4bba
To: <sip:xxxxx@192.168.1.138:5091>
Contact: <sip:GXP@192.168.1.103:5062;transport=udp>
Supported: replaces, timer, path
P-Early-Media: Supported
Call-ID: abef01157eb62168@192.168.1.103
CSeq: 31860 INVITE^M User-Agent: Grandstream GXP2000 1.2.5.3
Max-Forwards: 70^M Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE,UPDATE,PRACK,MESSAGE
Content-Type: application/sdp
Content-Length: 519
v=0
o=GXP 8000 8000 IN IP4 192.168.1.103
s=SIP Call^M c=IN IP4 192.168.1.103
t=0 0
m=audio 5044 RTP/SAVP 18 97 4 9 3 0 8 2
a=sendrecv
a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:sWF+uenIQvhCFR3wEPvZrW+SqWiUpwRfPfysyetN
a=crypto:2 AES_CM_128_HMAC_SHA1_32 inline:1LKGO16PTreA3Tjm1YWi0Rn4WuBmaUEUZB/90W/C
a=rtpmap:18 G729/8000
a=rtpmap:97 iLBC/8000
a=fmtp:97 mode=20
a=rtpmap:4 G723/8000
a

Sep 27 10:23:43 obi110.dyndns.org OBI: sendto c0a80167:5062(430)

Sep 27 10:23:43 obi110.dyndns.org SIP/2.0 401 Unauthorized
Call-ID: abef01157eb62168@192.168.1.103
CSeq: 31860 INVITE
Content-Length: 0
From: "Ebert" <sip:GXP@192.168.1.138:5091>;tag=d25465983ffa4bba
To: <sip:xxxxx@192.168.1.138:5091>
Via: SIP/2.0/UDP 192.168.1.103:5062;branch=z9hG4bK0bece92e2d10962c;received=192.168.1.103;rport=5062
WWW-Authenticate: Digest algorithm=MD5,nonce="fd9f5c96FBFDC99C",opaque="e3d53a167ffb9634",realm="pnn.obihai.com"

Sep 27 10:23:43 192.168.1.103 GS_LOG: [00:0B:82:06:9B:93][000][FF71][01020503] sip_len: 1117,
sip_handle: 0x0052F8CA, INVITE sip:xxxxx@192.168.1.138:5091 SIP/2.0
Via: SIP/2.0/UDP192.168.1.103:5062;branch=z9hG4bK0bece92e2d10962c From: "Ebert"
<sip:GXP@192.168.1.138:5091>;tag=d25465983ffa4bba To: <sip:xxxxx@192.168.1.138:5091>
Contact: <sip:GXP@192.168.1.103:5062;transport=udp> Supported: replaces, timer, path P-Early-Media: Supported
Call-ID: abef01157eb62168@192.168.1.103 CSeq: 31860
INVITE User-Agent: Grandstream GXP2000 1.2.5.3 Max-Forwards: 70 Allow:
INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE,UPDATE,PRACK,MESSAGE
Content-Type: application/sdp Content-Length: 519 v=0 o=GXP 8000 8000 IN IP4 192.168.1.103 s=SIP Call c=IN
IP4 192.168.1.103 t=0 0 m=audio 5044 RTP/SAVP 18 97 4 9 3 0 8 2 a=sendrecv a=crypto:1
AES_CM_128_HMAC_SHA1_80 inline:sWF+uenIQvhCFR3wEPvZrW+SqWiUpwRfPfysyetN
a=crypto:2 AES_CM_128_HMAC_SHA1_32 inline:1LKGO16PTreA3Tjm1YWi0Rn4WuBmaUEUZB/90W/C
a=rtpmap:18 G729/8000 a=

Sep 27 10:23:43 192.168.1.103 GS_LOG: [00:0B:82:06:9B:93][000][FF71][01020503] SIPReceive(430, Account2): SIP/2.0 401 Unauthorized Call-ID: abef01157eb62168@192.168.1.103 CSeq: 31860 INVITE Content-Length: 0 From: "Ebert" <sip:GXP@192.168.1.138:5091>;tag=d25465983ffa4bba To: <sip:xxxxx@192.168.1.138:5091> Via: SIP/2.0/UDP 192.168.1.103:5062;branch=z9hG4bK0bece92e2d10962c;received=192.168.1.103;rport=5062 WWW-Authenticate: Digest algorithm=MD5,nonce="fd9f5c96FBFDC99C",opaque="e3d53a167ffb9634",realm="pnn.obihai.com"
Sep 27 10:23:43 192.168.1.103 GS_LOG: [00:0B:82:06:9B:93][000][FF71][01020503] Received SIP message: 401

edit: This syslog entries are received when I tried to make a call from the GXP2000

ianobi · September 27, 2014, 11:08:07 AM

Try unchecking this:

SP2 Service
X_Proxy checked

X_Proxy is used when you wish to get the ip phone to register with the OBi200. Here you really are just looking for a simple ip to ip connection with no registration.

mec755 · September 27, 2014, 11:12:10 AM

Problem solved: I added a password under line2 on the GXP to connect to the Obi and also in SP2 in the SIP Credentials in the OBI200 configuration. Now everything works - incoming and outgoing is fine.

Edit: Ianobi, I only saw your post after I already tried with a password which worked. I tried now to remove the password again and uncheck X_Proxy, but then it's again not working. Seems there has to be a password in there.

ianobi · September 28, 2014, 12:54:22 AM

I'm glad that you found the solution. Generally direct ip calling to an OBi is easy if the other device is in the same router subnet and can call without registration.

azrobert · September 28, 2014, 10:00:42 AM

Quote from: ianobi on September 27, 2014, 11:08:07 AM
X_Proxy is used when you wish to get the ip phone to register with the OBi200.

ianobi,

I didn't know about this feature. I got the Phonerlite softphone to register to my OBi200, but the 3CX softphone fails.

Thanks

ianobi · September 29, 2014, 01:03:35 AM

I think that the OBi2xxx series is the only one to have X_Proxy. I'm guessing it was a function needed to make OBiPLUS work.

I don't have an OBi2xx, so I'll continue to find ways around calling without registration.

Interesting what you said about Phonerlite and 3CX. Phonerlite is the only softphone I have found so far that works in every OBi related scenario - unregisterd, registered with OBiAPP and now registered directly with an OBi202. It also seems to work with any other provider and for direct ip to ip calling. Not a bad achievement for a project done by one guy sat at home!

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problem with Obi200 and sip phone