Asterisk channels useful command

linux-56xh*CLI> sip show channels
Peer             User/ANR         Call ID          Format           Hold     Last Message    Expiry     Peer
200.42.253.79    100              MzlmZjJlYWIxNWI  0x4 (ulaw)       Yes      Rx: ACK                    100
200.42.253.79    6666             30e0c6d843ebcfd  0x4 (ulaw)       No       Tx: ACK                    6666

linux-56xh*CLI> sip show channel MzlmZjJlYWIxNWI

  * SIP Call
  Curr. trans. direction:  Incoming
  Call-ID:                MzlmZjJlYWIxNWI3M2IxMDc2OTI1MjczMWUxNWViMTA.
  Owner channel ID:       SIP/100-00000002
  Our Codec Capability:   0x6 (gsm|ulaw)
  Non-Codec Capability (DTMF):   1
  Their Codec Capability:   0x6 (gsm|ulaw)
  Joint Codec Capability:   0x6 (gsm|ulaw)
  Format:                 0x4 (ulaw)
  T.38 support            No
  Video support           No
  MaxCallBR:              384 kbps
  Theoretical Address:    200.42.253.79:50788
  Received Address:       200.42.253.79:50788
  Enable Netborder CPD:   No
  SIP Transfer mode:      open
  Force rport:            Yes
  Audio IP:               104.156.246.157 (local)
  Our Tag:                as6c49d7e0
  Their Tag:              064b0d7a
  SIP User agent:         X-Lite release 1103k stamp 53621
  Username:               100
  Peername:               100
  Original uri:           sip:100@200.42.253.79:50788
  Caller-ID:              100
  Need Destroy:           No
  Last Message:           Rx: ACK
  Promiscuous Redir:      No
  Route:                  sip:100@200.42.253.79:50788
  DTMF Mode:              rfc2833
  SIP Options:            (none)
  Session-Timer:          Inactive
  Transport:              UDP
  Media:                  RTP


linux-56xh*CLI> core show channel SIP/100-00000002
 -- General --
           Name: SIP/100-00000002
           Type: SIP
       UniqueID: 1434257315.2
       LinkedID: 1434257315.2
      Caller ID: 100
 Caller ID Name: 100
Connected Line ID: 6666
Connected Line ID Name: (N/A)
    DNID Digits: 6666
       Language: en
          State: Up (6)
          Rings: 0
  NativeFormats: 0x4 (ulaw)
    WriteFormat: 0x4 (ulaw)
     ReadFormat: 0x4 (ulaw)
 WriteTranscode: No
  ReadTranscode: No
1st File Descriptor: 26
      Frames in: 6150
     Frames out: 3730
 Time to Hangup: 0
   Elapsed Time: 0h3m20s
  Direct Bridge: SIP/6666-00000003
Indirect Bridge: SIP/6666-00000003
 --   PBX   --
        Context: default
      Extension: 6666
       Priority: 1
     Call Group: 0
   Pickup Group: 0
    Application: Dial
           Data: SIP/6666,60,
    Blocking in: ast_waitfor_nandfds
      Variables:
BRIDGEPVTCALLID=30e0c6d843ebcfdf7d4996300f5f681f@104.156.246.157:5060
BRIDGEPEER=SIP/6666-00000003
DIALEDPEERNUMBER=6666
DIALEDPEERNAME=SIP/6666-00000003
DIALSTATUS=ANSWER
DIALEDTIME=
ANSWEREDTIME=
SIPCALLID=MzlmZjJlYWIxNWI3M2IxMDc2OTI1MjczMWUxNWViMTA.
SIPDOMAIN=104.156.246.157
SIPURI=sip:100@200.42.253.79:50788

  CDR Variables:
level 1: dnid=6666
level 1: clid="100" <100>
level 1: src=100
level 1: dst=6666
level 1: dcontext=default
level 1: channel=SIP/100-00000002
level 1: dstchannel=SIP/6666-00000003
level 1: lastapp=Dial
level 1: lastdata=SIP/6666,60,
level 1: start=2015-06-14 00:48:35
level 1: answer=2015-06-14 00:48:38
level 1: duration=199
level 1: billsec=196
level 1: disposition=ANSWERED
level 1: amaflags=DOCUMENTATION
level 1: accountcode=100
level 1: uniqueid=1434257315.2
level 1: linkedid=1434257315.2
level 1: sequence=4