Call flows
The ordered steps of an inbound and an outbound call — and why the orders differ.
Concepts
How the gateway is put together and how a call moves through it.
Three things are worth understanding before changing anything:
- Call flows — the ordered steps of an inbound and an outbound call, and why the order differs.
- Routing plane — how a call is admitted, how a trunk is resolved, and what gets published.
- Media pipeline — codecs, SRTP, jitter, DTMF, and
the ways a call ends when nobody sends a
BYE.
Routing plane
How a call is admitted, how a trunk is resolved, and what gets published.
Media pipeline
Codecs, SRTP, jitter, DTMF, and the ways a call ends without a BYE.