HD Voice works by increasing the audio frequency range and the amount of data transmitted during a call. Traditional voice calls, using the narrowband audio codec, typically transmit audio frequencies between 300 Hz and 3.4 kHz. In contrast, HD Voice extends the frequency range up to 7 kHz or even higher, capturing a broader spectrum of sound. To achieve this,…

What is SIP? Session Initiation Protocol (“SIP”) is a communication protocol used to initiate, modify and terminate interactive user sessions. It supports multimedia communications, including voice, video, and messaging. It is widely used in VoIP implementations. It is not necessary for all VoIP implementations but is required to support some advanced features such as device mobility. To be a little…