Can't hangup stuck channel

Asterisk Asterisk SIP
1

I apparently have five pjsip channels active for over a week now, they seem to have gotten stuck.
I can do a channel request hangup on them but nothing happens, they still stay active.
How can I hang those up without restarting Asterisk?

  Channel:  <ChannelId........................................>  <State.....>  <Time.....>
      Exten: <DialedExten.............>  CLCID: <ConnectedLineCID.......>
==========================================================================================

  Channel: PJSIP/5315-00001252/System                            Up            289:04:33
      Exten: 5314                        CLCID: "" <>

  Channel: PJSIP/5315-00001253/System                            Up            289:03:46
      Exten: 5314                        CLCID: "" <>

  Channel: PJSIP/5315-0000125f/System                            Up            288:46:37
      Exten: 1                           CLCID: "" <>

  Channel: PJSIP/5315-00001297/System                            Ring          287:24:30
      Exten: 39045                       CLCID: "" <>

  Channel: PJSIP/5315-00001298/System                            Ring          287:23:53
      Exten: 39045                       CLCID: "" <>

This is what those channels are doing:

 core show channels
Channel              Location             State   Application(Data)
PJSIP/5315-00001298  39045@from-internal: Ring    System(mailx -r "asterisk@abcd
PJSIP/5315-00001297  39045@from-internal: Ring    System(mailx -r "asterisk@abcd
PJSIP/5315-0000125f  1@testing2:2         Up      System(mailx -r "asterisk@abcd
PJSIP/5315-00001253  5314@testing2:1      Up      System(mailx -r "asterisk@abcd
PJSIP/5315-00001252  5314@testing2:1      Up      System(mailx -r "asterisk@abcd
Message/ast_msg_queu 98455463452@from-int Up      GotoIf(0?,98455463452,2:outbou
2

They appear to be stuck in the System application itself. If “channel request hangup” is unsuccessful then the only way would be to restart Asterisk.

3

That might not be possible for a while.
Is there harm in leaving it that way?

4

It would use up a tiny amount of resources, but otherwise it should be fine.

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