asterisk1*CLI> zap show channel 1
Channel: 1CLI>
File Descriptor: 18
Span: 1
Extension:
Dialing: no
Context: from-internal
Caller ID: 100
Calling TON: 0
Caller ID name: pstn
Destroy: 0
InAlarm: 1
Signalling Type: FXS Kewlstart
Radio: 0
Owner: <None>
Real: <None>
Callwait: <None>
Threeway: <None>
Confno: -1
Propagated Conference: -1
Real in conference: 0
DSP: no
Relax DTMF: no
Dialing/CallwaitCAS: 0/0
Default law: ulaw
Fax Handled: no
Pulse phone: no
Echo Cancellation: 128 taps unless TDM bridged, currently OFF
Actual Confinfo: Num/0, Mode/0x0000
Actual Confmute: No
Hookstate (FXS only): Offhook