Linkus Pro

Good day we are running Linkus Pro on our S100 we are using Yealink T31P T43U and W60B 

If i look at the PBX Extension monitoring i can see the ip addresses and ports that the phones are connecting with to the PBX.

Problem is that some extensions are giving me the correct ip address but no port  numbers and those extensions have the below the below problems.

1. Internal calls are working fine 
2. Can receive outside calls but has one-way speech.
3. Can not dial out at all.
4. If internet connection drops the phones needs to be restarted again to reconnect.        


Has anyone come across something like this?


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