What is SIP trunking?
SIP trunking is a means of leveraging the powerful SIP technology to provide dedicated multimedia support to a physical location. A SIP trunk is a connection between your IP network and the SIP network of your telephony provider – in essence, a SIP trunk is a phone line. NextLevel Internet is a leader in SIP trunking technology, with an active and experienced research and development team and exceptional customer support.
A SIP trunk is a logical connection between an IP-PBX and a service provider’s application servers that allows VoIP traffic to be exchanged between the two. When a call is placed from an internal phone to an external number, the PBX sends the necessary information to the SIP trunk provider, who establishes the call to the dialed number and acts as an intermediary for the call. All signaling and voice traffic between the PBX and the provider is exchanged using SIP and RTP protocol packets over the IP network.
