Calls and address book

Manuals and FAQs

Transmission settings

Audio Settings

Signing up

User settings

Which browser?

Thanks to the  WebRTC-Standards you only need a modern web browser to make high quality phone calls. But not all browsers work equally well. We made the experience that browsers using the Blink Technology offer best audio quality. Among them are Google Chrome or Opera. They’ll guarantee you all features as long as you’re using […]

Guest link

SIP: Firewall Rules

If you want to use an audio codec in your local network, then you have to configure the firewall of your LAN. Please ask for network adminstrator to set up the following firewall rules: Outgoing SIP signaling Port 5060/UDP, port 5062/UDP, and port 5060/TCP must be opened for outgoing, bidirectional data flows. We use as […]

SIP Settings for Audio Codecs