JTAPI 与 SIP-RI？

Question

I am wondering if it exists a good compare of the both framworks/libs

• JTAPI ( https://mvnrepository.com/artifact/com.cisco/jtapi/10.5-2.10000-1 )
• SIP-RI ( https://mvnrepository.com/artifact/javax.sip/jain-sip-ri )

I am not understanding why we require 2 standards? SIP afaik is a protocol for telephony so expected to require SIP-RI, but on the other hand we hava also JTAPI.

Anyone around to bring light into my dark? Means for what shall I prefer one over the other?

Answer 1

In my understanding JTAPI ( https://www.oracle.com/java/technologies/jtapi.html ) is a proprietary API to implement Telephony Services to connect with platforms. It also does not support the SIP protocol. The spec was finalized in 2002 and there are some questions on so, whether the project is still alive (ie Is JTAPI still alive? ).

Even though I work in the area of IVRs/SIP/telephony I never heard of that API. SIP-RI seems to be quite "mature" as well but if I had to choose between those two I would go with SIP-RI ( https://www.oracle.com/technetwork/java/jain-sip-tutorial-149998.pdf ). Added: There is a github project of the reference implementation ( https://github.com/usnistgov/jsip ), but the project seems quite inactive/outdated as well. End Added

Unfortunately I don't know any active java based open source library/project to manage SIP connections.