asterisk users - Apr 2014 - "CBAnn" channel not going away in Asterisk 12

After an upgrade to Asterisk 12, I'm "collecting" channels.  When
I enter
and then exit a conference room, I see:

    -- <CBAnn/207-0000067f;1> Playing 'confbridge-leave.slin'
(language 'en')
    -- Channel CBAnn/207-0000067f;2 joined 'softmix' base-bridge
<5edb1920-3774-4ba3-8c4d-23e8fd04519c>
    -- Channel CBAnn/207-0000067f;2 left 'softmix' base-bridge
<5edb1920-3774-4ba3-8c4d-23e8fd04519c>

I'd expect those channel to immediately go away, but they just stay around:

asterisk*CLI> core show channel CBAnn/207-0000067f;1
 -- General --
           Name: CBAnn/207-0000067f;1
           Type: CBAnn
       UniqueID: 1398809161.20186
       LinkedID: 1398809161.20186
      Caller ID: (N/A)
 Caller ID Name: (N/A)
Connected Line ID: (N/A)
Connected Line ID Name: (N/A)
Eff. Connected Line ID: (N/A)
Eff. Connected Line ID Name: (N/A)
    DNID Digits: (N/A)
       Language: en
          State: Up (6)
  NativeFormats: (nothing)
    WriteFormat: unknown
     ReadFormat: unknown
 WriteTranscode: No 
  ReadTranscode: No 
 Time to Hangup: 0
   Elapsed Time: 0h1m3s
      Bridge ID: (Not bridged)
 --   PBX   --
        Context: default
      Extension: s
       Priority: 1
     Call Group: 0
   Pickup Group: 0
    Application: (N/A)
           Data: (Empty)
 Call Identifer: (None)
      Variables:
[Apr 29 18:07:04] ERROR[21102]: cdr.c:3106 ast_cdr_serialize_variables: Unable
to find CDR for channel CBAnn/207-0000067f;1

asterisk*CLI> core show channel CBAnn/207-0000067f;2
 -- General --
           Name: CBAnn/207-0000067f;2
           Type: CBAnn
       UniqueID: 1398809161.20187
       LinkedID: 1398809161.20186
      Caller ID: (N/A)
 Caller ID Name: (N/A)
Connected Line ID: (N/A)
Connected Line ID Name: (N/A)
Eff. Connected Line ID: (N/A)
Eff. Connected Line ID Name: (N/A)
    DNID Digits: (N/A)
       Language: en
          State: Up (6)
  NativeFormats: (slin)
    WriteFormat: slin
     ReadFormat: slin
 WriteTranscode: No 
  ReadTranscode: No 
 Time to Hangup: 0
   Elapsed Time: 0h3m30s
      Bridge ID: (Not bridged)
 --   PBX   --
        Context: default
      Extension: s
       Priority: 1
     Call Group: 0
   Pickup Group: 0
    Application: (N/A)
           Data: (Empty)
 Call Identifer: (None)
      Variables:
[Apr 29 18:09:31] ERROR[21102]: cdr.c:3106 ast_cdr_serialize_variables: Unable
to find CDR for channel CBAnn/207-0000067f;2

On Tue, Apr 29, 2014 at 5:10 PM, Richard Kenner <kenner at gnat.com>
wrote:
> After an upgrade to Asterisk 12, I'm "collecting" channels. 
When I enter
> and then exit a conference room, I see:
>
>     -- <CBAnn/207-0000067f;1> Playing 'confbridge-leave.slin'
(language
> 'en')
>     -- Channel CBAnn/207-0000067f;2 joined 'softmix' base-bridge
> <5edb1920-3774-4ba3-8c4d-23e8fd04519c>
>     -- Channel CBAnn/207-0000067f;2 left 'softmix' base-bridge
> <5edb1920-3774-4ba3-8c4d-23e8fd04519c>
>
> I'd expect those channel to immediately go away, but they just stay
around:
>
> asterisk*CLI> core show channel CBAnn/207-0000067f;1
>  -- General --
>            Name: CBAnn/207-0000067f;1
>            Type: CBAnn
>        UniqueID: 1398809161.20186
>        LinkedID: 1398809161.20186
>       Caller ID: (N/A)
>  Caller ID Name: (N/A)
> Connected Line ID: (N/A)
> Connected Line ID Name: (N/A)
> Eff. Connected Line ID: (N/A)
> Eff. Connected Line ID Name: (N/A)
>     DNID Digits: (N/A)
>        Language: en
>           State: Up (6)
>   NativeFormats: (nothing)
>     WriteFormat: unknown
>      ReadFormat: unknown
>  WriteTranscode: No
>   ReadTranscode: No
>  Time to Hangup: 0
>    Elapsed Time: 0h1m3s
>       Bridge ID: (Not bridged)
>  --   PBX   --
>         Context: default
>       Extension: s
>        Priority: 1
>      Call Group: 0
>    Pickup Group: 0
>     Application: (N/A)
>            Data: (Empty)
>  Call Identifer: (None)
>       Variables:
> [Apr 29 18:07:04] ERROR[21102]: cdr.c:3106 ast_cdr_serialize_variables:
> Unable to find CDR for channel CBAnn/207-0000067f;1
>
> asterisk*CLI> core show channel CBAnn/207-0000067f;2
>  -- General --
>            Name: CBAnn/207-0000067f;2
>            Type: CBAnn
>        UniqueID: 1398809161.20187
>        LinkedID: 1398809161.20186
>       Caller ID: (N/A)
>  Caller ID Name: (N/A)
> Connected Line ID: (N/A)
> Connected Line ID Name: (N/A)
> Eff. Connected Line ID: (N/A)
> Eff. Connected Line ID Name: (N/A)
>     DNID Digits: (N/A)
>        Language: en
>           State: Up (6)
>   NativeFormats: (slin)
>     WriteFormat: slin
>      ReadFormat: slin
>  WriteTranscode: No
>   ReadTranscode: No
>  Time to Hangup: 0
>    Elapsed Time: 0h3m30s
>       Bridge ID: (Not bridged)
>  --   PBX   --
>         Context: default
>       Extension: s
>        Priority: 1
>      Call Group: 0
>    Pickup Group: 0
>     Application: (N/A)
>            Data: (Empty)
>  Call Identifer: (None)
>       Variables:
> [Apr 29 18:09:31] ERROR[21102]: cdr.c:3106 ast_cdr_serialize_variables:
> Unable to find CDR for channel CBAnn/207-0000067f;2
>
The announcer channel is not supposed to go away while the conference
exists
so it can be reused for the next sound to play into the conference.  The
announcer
channel joins/leaves the conference as it has sounds to play.  If the
channel still
hangs around after the conference is destroyed then there is a problem.

Richard
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