
SIP trunking. The difference between PSTN, ISDN and VoIP.
Years ago when VoIP first appeared on the scene, in the time of dial-up Internet, it was associated with poor audio quality and dropped calls.

Years ago when VoIP first appeared on the scene, in the time of dial-up Internet, it was associated with poor audio quality and dropped calls.

Let’s face it – it is hard to let go a desk phone for a USB headset connected to a PC. A desk phone is:

Acquiring a solution which supports WebRTC is one of the best investments to improve the way colleagues of a company and customers interact. WebRTC can bring big advantages but
Transfer calls from one device to another Did it ever happen to you too: busy on the phone with an important customer but you need

SIP-ALG is supposed to simplify the life of SIP devices behind NAT/PAT and it works by rewriting relevant SIP headers and SDP session information with the public
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