What Are SIP Trunking Providers?Ī SIP trunking provider is a company that offers digital communications services like SIP trunking to businesses that want to connect their internal PBX system to the external PSTN network. This has opened the door for more enterprises to leverage Microsoft Teams as their primary telephony solution. In the past, Microsoft Teams was only compatible with Microsoft-certified devices, but now SIP phones and headsets from major manufacturers like Cisco, Yealink, and Polycom can be used with the platform. Moreover, Microsoft recently announced support for most SIP phones. That means companies can use Microsoft Teams as an enterprise-grade unified communications (UC) platform. In this case, managed service providers offer SIP trunking as part of an end-to-end cloud telephony solution. Direct Routing is a way to connect Microsoft Phone System, a hosted PBX solution, with the PSTN network. SIP Trunks for Microsoft TeamsĪs part of their telephony modernization efforts, many organizations are choosing to use Microsoft Teams as a complete communications solution. Since SIP is an internet communications protocol rather than an analog voice technology based on physical lines, it’s a more flexible and scalable solution for modern businesses. Primary Rate Interfaces (PRIs) were the most popular standard used on the outdated ISDN system, but scalability was limited because each circuit only allows up to 23 concurrent calls. Many companies are using SIP trunks to replace physical ISDN circuits-the copper lines installed on-premises-with a virtual solution. A SIP trunk, however, is a service that consists of multiple channels that enable SIP-based communication such as voice and video calls, instant messaging, multimedia conferencing, and more. In the past, an analog “trunk” was a collection of copper wires that ran from a specific business location to the local phone company. More specifically, a SIP trunk is a virtual version of an analog phone line that enables a private branch exchange (PBX) to communicate with the public switched telephone network (PSTN). SIP trunking links a company’s telephony infrastructure to the public phone network over the Internet using the SIP standard. The session initiation protocol (SIP) is used to initiate, manage, and terminate connections for real-time calling and messaging at the application level. In this post, we’ll look at what SIP trunks are and the most important considerations when choosing a SIP trunk provider. For example, SIP trunking is a solution that helps companies eliminate physical phone lines by using virtual channels, which is a more cost-effective and scalable alternative to older analog solutions. As businesses continue to modernize their infrastructures, cloud telephony solutions are quickly gaining popularity.
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