Support for OpenSIPs or Kamailio

[sido420]

I am new to VoIP and still learning.

I have a requirement to handle SIP calls through a nodejs server.

I wanted to know if its possible to use drachtio-srf with any other SIP server than drachtio.

If yes, whats the benefit of using Drachtio server over Kamailio etc then?

[davehorton]

No, drachtio-srf works specifically with the drachtio server.

My sense is that the people who choose to work with drachtio do so because they are familiar with & prefer writing applications in Node.js, as opposed to learning the unique configuration file syntax of the other products you mention

[sido420]

The question then is: Is Drachtio server as stable, scalable, and feature rich as OpenSIPs or Kamailio?

Can Drachtio server itself work as proxy for Kamailio/OpenSIPS?

[davehorton]

• feature rich? Totally depends on what features are important to you
• stable? Hmm, drachtio is much earlier in its development than those products, which have each been around > 10 years. I would guess they are more stable.
• scalable? No. Both opensips and kamailio can scale to greater numbers of calls on a single server, assuming that is your measure. You can think of drachtio server as handling hundreds of incoming calls per second on an quad core VM, opensips/Kamailio as handling thousands of calls per second. That said, I have deployed at fairly massive scale using horizontal scaling
• proxy to kamailio/opensips: yes, you can build a proxy application to anything using drachtio.

However, positioning drachtio as a proxy to Kamailio/openSIPs would probably not be a common thing -- more likely the other way around, or only drachtio.

The value of drachtio is to allow you to build many kinds of SIP applications -- not just proxies. If you are looking for a proxy only, then that is exactly what Kamailio is good for and is typically used for. Bit of a learning curve, in my opinion, but good product so if you have time to invest and you simply want a proxy, I would recommend you go that route. People that use drachtio are typically building SIP server applications that involve more application logic, including such things as webrtc signaling/media proxies, back to back user agents, siprec recording applications, etc.