SIP is more than voice and video, it is also instant messaging and presence. Even if the traditional SIP services are more voice focused, the Instant Messaging (IM) gained a lot if importance and traction in the context of *IP Multimedia Subsystem* (IMS) and *Unified Communications* (UC).
https://blog.opensips.org/2022/01/20/opensips-3-3-messaging-in-the-ims-and-uc-ecosystems/ Enjoy the reading! -- Bogdan-Andrei Iancu OpenSIPS Founder and Developer https://www.opensips-solutions.com
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