1. заходим в asterisk -rvvvvvvvvvvvvvv

2. asterisk*CLI> sip show channels

Peer             User/ANR         Call ID          Format           Hold     Last Message    Expiry     Peer
172.20.10.85     (None)           32ac5fd652c7f49  (nothing)        No       Rx: REGISTER               <guest>
172.20.10.144    (None)           3a322ad133991d3  (nothing)        No       Rx: REGISTER               <guest>
172.20.10.108    (None)           0c4b5b75276164a  (nothing)        No       Rx: REGISTER               <guest>
172.20.10.58     (None)           31124a6527d2460  (nothing)        No       Rx: REGISTER               <guest>
172.20.10.139    (None)           43a2244149fa4a1  (nothing)        No       Rx: REGISTER               <guest>
172.20.10.131    (None)           38cc5c9d70d4648  (nothing)        No       Rx: REGISTER               <guest>
172.20.10.18     (None)           124bfe4e3b24bc4  (nothing)        No       Rx: REGISTER               <guest>

3. asterisk*CLI> sip show channelstats

Peer             Call ID      Duration Recv: Pack  Lost       (     %) Jitter Send: Pack  Lost       (     %) Jitter
172.20.10.65     48d44258674  00:01:12 0000002822  0000000000 ( 0.00%) 0.0000 0000002785  0000000000 ( 0.00%) 0.0002
172.20.10.17     357c9cf4082  00:01:07 0000003220  0000000000 ( 0.00%) 0.0000 0000003216  0000000001 ( 0.03%) 0.0001
172.20.10.25     0a8cfc93077  00:01:07 0000003227  0000000000 ( 0.00%) 0.0000 0000003210  0000000001 ( 0.03%) 0.0000
172.20.10.31     29e1944a-d5  00:00:04 0000000101  0000000000 ( 0.00%) 0.0000 0000000100  0000000000 ( 0.00%) 0.0001
172.20.10.132    36acaef6469  00:00:04 0000000111  0000000000 ( 0.00%) 0.0000 0000000091  0000000000 ( 0.00%) 0.0000

4. Как отключить зависшие каналы?
core show channels verbose

Channel              Context              Extension        Prio State   Application  Data                      CallerID        Duration Accountcode PeerAccount BridgeID
SIP/350-00003933     from-internal                            1 Up      AppDial      (Outgoing Line)           350             00:05:26                         a6686ccf-95f5-4f6d-b
IAX2/asterisk_old-45 from-internal                            1 Up      AppDial      (Outgoing Line)           102             00:00:18                         b31978d4-c6b8-4f58-8
SIP/293-00003932     macro-dial-one       s                  44 Up      Dial         SIP/350,40,TtrI           293             00:05:27                         a6686ccf-95f5-4f6d-b
SIP/319-0000393f     macro-dialout-trunk  s                  22 Up      Dial         IAX2/asterisk_old/102,300 319             00:00:18                         b31978d4-c6b8-4f58-8
4 active channels
2 active calls

из выше стоящего окна вписываем peer, который необходимо отключить.

channel request hangup SIP/260-0000363c