Session Initiation Protocol (SIP) is a signaling protocol used for initiating, maintaining, modifying, and terminating real-time communications such as video, voice, messaging, and more between two or more endpoints on IP networks.  

Simply put, SIP is a standard for providing VoIP (Voice over Internet Protocol) services, enabling real-time digital communication. SIP calling is enabled by SIP trunks, which act as virtual phone lines allowing you to transfer multimedia data. 

How does Sinch work with SIP? 

Sinch offers reliable, fast, and cost-effective SIP trunking services, allowing businesses to communicate with their audience seamlessly using any network - a VPN or any of our partner carriers - not just the Internet or a private network. 

What are the benefits of Sinch’s SIP? 

Sinch’s SIP trunking enables local, long distance, and toll-free calling with a single connection.

Eight of the biggest tech companies are Sinch customers, and it’s no coincidence! No matter what you need, you can rely on our extensive experience and world-class expert team to help you take customer communications to the next level.