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Caller cannot hear me

I have registered my account with freshphone, and I am currently using it with the Zoiper Android app. 

I have received 2 calls, that worked perfectly, but a subsequent 2 calls where the caller could not hear me besides a very mumbled "gurgle" as it was described. 

All 4 calls were minutes apart, and all while the handset was connected to my 100mb fiber line.

The phone is a Samsung S7 edge if that helps. 

DHCP time should be disabled and then you can use as the time server +2 GMT

Some ISP's, very few, actually require SIP ALG to be enabled.

One way audio is almost always related to the Firewall, but if it works sometimes and then doesn't work, it could be related to the connection to ( if they can't here your) or the connection from (if you can't hear them)

Everything was working fine but sincI made two calls to the UK, people calling us cannot hear us while we can hear them.

I tried disabling SIP ALG in the D-Link Router but that had no effect except that my Yealink 53 H cordless phone could not get regsitered again until I enabled SIP ALG again.

I also tried *99 - the echo test but apart from the instructions I could not hear anything back when I speak.

I also noted that my Yealink cordless phone's Date and Time is still not correct and I cannot change it - I am not sure if this may have an effect on the problem of the caller not hearing us?

Any new ideas will be appreciated



Get her to test calls to other landlines. Check that SIP ALG is disabled on her router. If she is using a Yealink cordless phone, the number assignment settings on the base might not be configured correctly to receive incoming calls

Having a issue with this olderly lady i know. Moved her to freshphone but now when she dials 0119995102 the call counts but she cant hear them at all ? The codec are all perfect, she is on fibre and using a yealink phone. What could i try ? But when she calls my cellphone i can hear here etc. Seems to be with certain numbers. Also now im told when she calls the phone it doesnt ring ? Think she might be going crazy 

i have the same issue above, can make and receive calls buy the cannot hear the incoming caller or when i call out they cannot hear me. I use a yealink phone

Hi Dario,

Was the issue fixed when you used your mobile data? 

Thank you. 

Hi No it's back, with a vengeance, totally unusable

Ok It seems that has resolved the issue now

Hi Dario,

Please try using your mobile data as an internet source and then test the application. 

Thank you. 

Hi I've done that it's worse now no calls can go out even, ps the problem was also when I'm not on this site also.

Hi Dario,

I hope you are well. Please check the settings on your LTE router. Look for SIP ALG which should be disabled and also set your firewall settings to low. 

Thank you. 

Oh, Just an additional comment when I phone someone using the exact same application and setup from whithin the app they still can't hear.

Hi Yes I can make calls no problem and I can hear but the other person cannot hear at all, The 7minute call was me hanging on and as soon as the person answered they can hear absolutely nothing. 4mb Neotel Lte line while waiting for Fibre. However it was working well.

Hi Dario,

I hope you are well. I see that you made a 7-minute call this morning. Does this issue happen intermittently or everytime you make and receive calls? Please advise what type of internet connection are you using for your Freshphone device. 

Thank you. 

Hi I'm having exactly the same problem I can hear perfectly but the person on the other side can't hear anything. When I do the *99 test I can't hear anything except a slight swishing sound. What do I do now? Samsung S5.

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