What program can be used to make calls, during which there will be uninterrupted communication for 3-4 hours?

Question

Telephony

Hello, please tell me a program that can make long calls. Suitable for any computer or phone

Answer 1

The stability of the Internet connection is the Achilles heel of any existing messenger, if the connection break lasts longer than a dozen other seconds, the call will end, no options. like at the end of the money on the account of the then home network, Skype continued to work, finding another running Skype client on the local network and connecting through it). Unfortunately, this great software was destroyed and it is not possible to return it.
I strongly recommend paying attention to webrtc web chats that work without a server (more precisely, sending traffic directly between clients, if possible), a ready-made open source infrastructure is available, for example, fromjitsi
Formally, an application for audio video chat based on a browser and webrtc is a few dozen lines of code (utilities for ensuring connection when all clients are over nat, but everything is open source are a little more complicated), the browser is responsible for everything. Try talky.io simple audio/video chat, works shockingly well writing your own chat with your own logic of behavior when the connection is broken is not a big problem

Answer 2

Telegram

Answer 3

Any messenger, including Skype. We didn't chat for 3-4 hours, but two-hour conferences (for 5 people) are quite OK.