I am trying to develop a VOIP app using Twilio. Each user using my app will be able to call other users using VoIP only (No phone numbers). I can see how the workflow goes but:
With SIP, each user must have a SIP account to uniquely identify themselves. In Twilio, they say they do not offer SIP registration services. So how would I be able to uniquely identify users and connect them to each other? And How Would I be able to register them using their unique app id?
Thanks a bunch.
Twilio evangelist here.
One of the steps in the Twilio Client workflow is requesting a capability token. The capability token indicates whether or not a particular Client can make outgoing calls or receive incoming calls.
In a typical workflow, a Twilio Client app will make a request to your web server for a capability token and pass in the client name they wish to use (for instance, alice). When you create the capability token you can specify that alice is able to receive incoming calls. Later, when you want to place a call to alice you can refer to alice as shown here.
For more on how the entire process works, you might want to check out the Twilio Client quickstart if you haven't already.
Hope this helps!