What is SIP? ; SIP trunking is a service provided by communication service providers. It uses the Session Initiation Protocol to connect a phone system to the public switched telephone network (PSTN) over the internet. SIP is used for call setup, management, and termination. It’s often offered as a replacement for traditional phone lines, known as Primary Rate Interfaces (PRIs), which use older technology. Many communication service providers around the world are adopting SIP trunking to replace their outdated services. By using existing netw ...
Vonage SIP Trunking (formerly Nexmo) easily connects your existing PBX system to the world. Scale on your terms—without the worry of peak traffic patterns.
Do you need Session Initiation Protocol trunking for your business? Read about SIP trunking and how it enables seamless enterprise internet telephony.
SIP trunking is a hot topic, but it can be easy to miss the basics. Here's a crash course in all things SIP trunking.
SIP trunking architecture ; SIP trunking architectures enable VoIP connectivity between on-premises private/local phone systems and a PSTN. They replace physical analog phone lines -- also known as primary rate interfaces (PRIs) -- with logical connections or SIP trunks. A SIP trunk is a virtual phone line that connects a private branch exchange (PBX) to the PSTN. It may consist of 20 or more SIP lines or channels. SIP lines are the digital avatars of traditional phone lines. New lines can be added to the SIP trunk and architecture to allow com ...
Learn what SIP trunking is and whether this telephony protocol makes sense for your business.
(SIP) Session Initiation Protocol Trunking uses a data connection to establish calls to your PBX. Learn to cut calling costs with a SIP trunk.
Learn about the differences between SIP trunking and PRI and BRI telecommunication services and why SIP is preferred over PRI and BRI.
A SIP trunk is a single line for one call, with each concurrent call needing one. Let's dig deeper more about what is a SIP Trunk.
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