Unable to contact STUN

[firstprotect]

I'm trying to use 3cx phone on a Windows Vista machine, and I'm getting a STUN check fail (trying to connect to a variety of servers):

DX:MP3 Writer initialized
DX:MP3 Encoder initialized
DX:FFDShow not present
Translation file OK
Attempting to connect voip1.noblesolutions.co.uk
Phone got as local port 64500
Jabra not connected
RTP engine OK
SIP engine OK
Sound mic device OK []
Sound ring device OK []
Sound speaker device OK []
Sending STUN request
STUN check failed
STUN check failed
STUN check failed
STUN check failed
STUN check failed
STUN check failed
Unable to contact STUN

---
Can anyone explain what the problem might be, or how I can troubleshoot it? My configuration is as follows (I've removed the login details):


[Profile0]
Name=***
Enabled=1
CallerID=***
AuthUser=***
AuthID=***
AuthPass=***
PBXAddr=voip1.noblesolutions.co.uk
PBXRemoteAddr=voip1.noblesolutions.co.uk
PBXVoicemail=
ServerProxy=
DtmfRFC2833=1
DtmfInband=0
DtmfSipinfo=0
DtmfPayload=101
SipTransport=0
RegistrationTime=2
Codecs=PCMU;PCMA;GSM
VideoCodecs=H.263 (ffdshow)
VideoFormats=QCIF;CIF;SQCIF;CIF4;
LocalPBX=0
RTPTransport=0
ProvisioningURL=http://
UseTunnel=0
UseProxy=0
TunnelPass=abc
TunnelRemAddr=voip1.noblesolutions.co.uk
TunnelPort=5090
PBXPort=0
STUNServer=
AutoProvisioning=0
VoicemailConfirmed=0
CLSID={B3C77091-AEFC-4F33-A9AC-F483A3ACE394}
[General]
VideoCamera=
VideoAutoSend=1
VideoSendWhenInactive=1
UseVideo=1
EchoCancellation=0
NoiseReduction=0
ActiveBLFBank=0
SndMicGUID=
SndPlayGUID=
SndRingGUID=
Skin=3CXPhone.cxs
ActiveProfile={B3C77091-AEFC-4F33-A9AC-F483A3ACE394}
RunAtWinStartup=0
ShowDebugWindow=0
LangFile=
MACAddress=912D8D082649
SipTraceLog=0
LocalRecording=0
MP3Recording=0
TunnelLog=0
ExpandPlus=1
NoFocusSteal=0
OnComputerLocked=0
OnScreensaverStarts=0
SpeakerVol=0
RingingVol=0
MicVol=0
xpos=1002
ypos=208
Brightness=-22
Contrast=133
Saturation=108
Sharpness=25
RTPFirstPort=40000
RTPLastPort=40049
LocalPort=-1
AmPmClock=0
CheckUpdates=1

 

[leejor]

I just see...

STUNServer=

No server information

 

[firstprotect]

I just see...

STUNServer=

No server information

Thanks for your reply, leejor.

I must have copied the config file while attempting to remove the STUN server check. I have double checked and now the STUN server config says:

STUNServer=stun.3cx.com

I still get the same issue. Incidentally, I only get the issue on one particular machine and it shares an office with other machines that work fine. Are there any other routes I can take to troubleshoot this issue?

Thanks in advance

 

[leejor]

If you just have the issue on the one machine, then, I'm going to hazard a guess that something is not set-up properly on that machine. Perhaps the network or firewall settings. Do you use something like Zonealarm or Norton that needs to be "opened" to the 3CX phone programme?

If you can do a Ping to outside sites (URL's), then you are connecting to a DNS server properly.

And remember, you don't have to use the 3CX STUN server, if you do a web search, you will find many available to you.