Queue, local channels and transfers

[IhorOlkhovskyi]

Hello!

Quite basic (I believe) question, but still
I’m using Queues with local channels. Quite simple, though
queues.conf

[QUEUE_A]
member = Local/NUM_A@remote/n

extensions.conf

[incoming]
exten => QUEUE_A,1,Queue(QUEUE_A)
[remote]
exten => NUM_A,1,Dial(PJSIP/NUM_A@out_trunk)

So, all seems straightforward. Usual problem, is when device behind NUM_A transfers a call, queue member stays in a In Use state.

Usual solution is to remove /n at the end of member definition and use GROUP and GROUP_COUNT to prevent new calls to already talking member.

For whatever reason if I’m doing something like this
queues.conf

[QUEUE_A]
member = Local/NUM_A@remote

extensions.conf

[incoming]
exten => QUEUE_A,1,Queue(QUEUE_A)
[remote]
exten => NUM_A,1,Set(GROUP(remote)=NUM_A)
    same => n,NoOp(Group Count is ${GROUP_COUNT(NUM_A@remote)})
    same => n,Dial(PJSIP/NUM_A@out_trunk)

I’m getting that Group count for every new call is 1 regardless of number of active calls to NUM_A established already. I do suspect some “extra optimizations” of a local channel here.

Am I missing something?
Or maybe there is a possibility on executing transfer (via Asterisk or via SIP mechanism) to optlimize local channel again so agent would be freed from the call?

I’m using Asterisk 18.13.0

Thanks in advance!

[IhorOlkhovskyi]

Ok. Found a solution for a GROUP_COUNT. GROUP function is needed to be called on a called channel directly, so smth like

[incoming]
exten => QUEUE_A,1,Queue(QUEUE_A)
[remote]
exten => NUM_A,1,,NoOp(Group Count is ${GROUP_COUNT(NUM_A@remote)})
    same => n,Dial(PJSIP/NUM_A@out_trunk,,b(set_group^${EXTEN}^1))
[set_group]
exten => NUM_A,1,Set(GROUP(remote)=NUM_A)
    same => n,Return

But question with “back to optimized state of local channel” remains. Is it something doable?