Channels vs Calls

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--snipped from Michael Collins' post on the mailing list--

If you are curious as to why "show calls" and "show channels" returns such different information in the fs_cli - in an extreme, why "show calls" may return 0 while there are active calls, this will explain the difference.

A "channel" is just a single call leg, but a "call" is two channels bridged together.

So, dialing from one phone to another phone will yield 2 channels and 1 call.


You homework assignment tonight is to make several calls and experiment with these commands:

  • show calls
  • show channels
  • show distinct_channels

Try calling from phone to phone as well as trying things like calling voicemail.