sundance-communications.com/forum Forums TDM Business Telephone Systems Samsung Telephones & Systems Samsung SCMC WEVoIP with IPhone SE

Hi together,
my customer has already a Samsung WEC8050 with 10 Access Points.
I have installed a SCMC with the newest firmware 2.3.0.2., because he has problems with the SIP Clients which he is using on the smart phones. The SCMC is at first for testing and there are no licence key inside
I have installed the WE VoIP on 2 Apple Iphones SE and on 3 Android phones.
Now I have the following issue:
When I call from a android phone the apple iphone, the phone is ringing. He push the call button and he hears nothing. The caller hears the speech of the Iphone User.
But the Iphone user doesn't hear anything.
When I make an call from outside to the Iphone user, it is the same.
When the Iphone user calles the android user or any outside user, everything works properly.
With the android phone we have no problems.
All items are in the same network, there is no gateway between. The port for push service ist open to the callmanager.
The Iphone has the newest firmware and version of WE VoIP is 2.3.5


Does anybody haye an idea. Thanks.

Additional informations from today: I tried between the IPhones: I call from one IPhone to the other over WE VoIP. The second IPhone is ringing, I can talk in both directions at both IPhone.
But the conversation is maximum 12 seconds long, then the call breaks off. I tried 5 times, always the same result.

Problem is solved since yesterday. The SCMC and the Samsung WIFI did not had the problem.