5 Reasons SIP Trunking is Alive and Well

5 Reasons SIP Trunking is Alive and Well

The SIP trunking market continues to thrive, even as organizations move to the cloud.

A funny thing happened on the way to cloud communications and contact centers – SIP trunking adoption grew.

Nemertes’ recently published “Workplace Collaboration: 2019-20 Research Study” shows that more than 18% of the 645 participating companies are using SIP trunking, while an additional 34% plan to deploy it in the next two years. Adoption is highest in North America with 58% of PSTN trunks converted to SIP, opposed to 37% in APAC and 21% in EMEA. More startling, organizations are continuing to leverage SIP trunking even when adopting UCaaS. For example, nearly 89% of those using Microsoft Teams for calling are bringing their own SIP trunking services using Microsoft Direct Routing rather than buying PSTN access through Microsoft’s Calling Plan.

It seems counter-intuitive that SIP trunking adoption would increase given many UCaaS offerings include local and long-distance calling plans. If PSTN access is part of a UCaaS license, why would organizations still need to purchase SIP trunks? Yet most, UCaaS providers allow customers to bring their SIP trunks with them as they migrate to the cloud. Our research shows several reasons for the continued and growing adoption of SIP trunking:

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