[Linphone-developers] VerizonWireless voice issue

[sprijic]

Hi,

we are developing Linphone based app, and seeing issues with voice not 
going through. So, as a reference, we are using Linphone iPhone app over 
Linphone service.
So, testing with Linphone iPhone app, voice is missing if caller is on 
US Verizon wireless network. If same app receives call, voice works 
correct. Android app does not seem to have these issues.
Do you have any information about some mobile providers blocking SIP 
traffic?

Best regards,
Slobodan Prijic