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By BarryW
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#5600
I have set up a Basic Sipgate account similar to my home account at my local club. Simple to set up on a Grandstream voip phone. However, something rather puzzling is happening...

Landline to viop phone and vice versa all working correctly.
EE Mobile to voip phone and vice versa all working correctly.
Vodafone to voip phone and vice versa all working correctly.
O2 to voip phone and vice versa rings but no audio in both directions.
3 to voip phone still to be tested.

...any idea's or suggestions greatly appreciated.

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By WelshPaul
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#5601
Sounds like a possible routing issue with the 02 network. Come across something similar in the past although instead of silence, number not in use (3 network in my case).

Try logging in to your Sipgate account and creating an immediate forwarding rule to another landline number or mobile number. Once done, power down the Grandstream VoIP phone and try calling the number again from the 02 mobile that you had problems with earlier. If the landline or mobile that you forwarded all calls to rings and you can communicate ok then I guess that rules out the 02 network and possibly Sipgate as being the cause of the problem.

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By BarryW
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#5612
Hi Paul,

I got the opportunity to try this yesterday. The redirect telephone worked perfectly. The Grandstream has since started working correctly so I am at a loss as to what caused the issue. I guess I will just have to monitor the phone and see if there are any further issue. Thanks for your help.

Barry
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