I’m convinced you’re incorrect. SMTP is an open transport protocol defined in RFC 2821 by the IETF. Anything that is an IP “open protocol” would be defined by IETF as an RFC. No one owns it. No license is required to operate an SMTP server. Same with other common protocols like SIP. It sets qualifications/requirements for what it is so anyone can use it.
RCS is a proprietary standard owned by the GSMA. It seems there is some support for developers that want to use RCS but it’s through an API. Meaning your use is licensed and at a cost. Also, you can’t really see what it’s doing. You’re just using an API. Your access can be revoked. So is it an open standard? No.
I did my own research and I plan to try these APIs because I have used other messaging services like twilio for paging applications. But here are some other geeks arguing about it:
I’m convinced you’re incorrect. SMTP is an open transport protocol defined in RFC 2821 by the IETF. Anything that is an IP “open protocol” would be defined by IETF as an RFC. No one owns it. No license is required to operate an SMTP server. Same with other common protocols like SIP. It sets qualifications/requirements for what it is so anyone can use it.
RCS is a proprietary standard owned by the GSMA. It seems there is some support for developers that want to use RCS but it’s through an API. Meaning your use is licensed and at a cost. Also, you can’t really see what it’s doing. You’re just using an API. Your access can be revoked. So is it an open standard? No.
I did my own research and I plan to try these APIs because I have used other messaging services like twilio for paging applications. But here are some other geeks arguing about it:
https://www.reddit.com/r/Android/comments/wm18td/stop_telling_people_that_rcs_is_an_open_standard/