Queue variables

Asterisk Asterisk Dialplan
1

I put ‘setqueuevar = yes’ however I can not access the values ​​defined in the varibles such queuecall in dialplan … can anything help me. My final goal is to register them in the database.

2

What’s your dialplan look like? Have you set the name of the queue first before accessing the values? For instance here is a sample dialplan:

exten => 101,1,NoOp()
  same => n,Set(${QUEUE_VARIABLES(queue)}=)
  same => n,Verbose(0,strat = ${QUEUESTRATEGY})
  same => n,Verbose(0,calls = ${QUEUECALLS})
  same => n,Hangup()

Using the above I was able to put a call into the queue named “queue” and call was equal to 1. The correct strategy was also output.

3

my extensions look like that

[crm_incoming_call]
exten => 1111,1,NoOp(Appel entrant crm teste)
same => n, Set(CHANNEL(language)=fr)
same => n, Playback(Bienvenue)
same => n,Read(Digits,Choixlangue)
same => n,NoOp({Digits}) same => n,GoSub(disponible,s,1) same => n,Answer() same => n,Queue(crm_strategy,,,,60) same => n,Set(QUEUE_VARIABLES(crm_strategy)) same =>n,NoOp({QUEUECALLS})
same => n,Playback(Merci)
same => n,Playback(Aurevoir)
same => n,Hangup

4

I want to have the values ​​before and after a call is received.
I am new to asterisk. I develop a solution that integrates asterisk.

5

Looks like you are missing some brackets. Try changing:

to:

same => n,Set(${QUEUE_VARIABLES(crm_strategy)}=)

And see what happens.

6

That might work, for the wrong reason.

QUEUE_VARIABLES cannot be used in an L-Value context , only in an R-Value one (L and R named after the side of an assignment on which they normally appear. Using ${} will create an R-Value, but that R-Value will then be used in an L-Value context, so you will end up trying to set ${1} or ${0} to an empty string, depending on whether the queue exists.

7

When accessing to variable values we use ${} and when setting variable value we just put the name only, so why this exception here ?

8

I’m not really sure why the function was originally setup this way, but it only has a read handler and no write handler. So that variable is unable to be “set”.

9

But if we can set variables using this function why this line using with this SET here and also setting the value to null;

10

Ya using “Set” here is confusing. Probably the best way to do it is something like the following instead:

same => n,Noop(${QUEUE_VARIABLES(queue)})
1 Like
11

Thanks @kharwell these are the things, that re not officially documented anywhere

12

No problem, and you’re right an example is not easily found. I went ahead, and updated the “building queues” wiki with the simple example discussed here:

https://wiki.asterisk.org/wiki/display/AST/Building+Queues#BuildingQueues-QueueVariables

1 Like
13

Great man, good to know that Asterisk’s gods, are still here to help the mortals :smile: :smile:

14

Ha! I am but a mere mortal myself who just happens to have access to the wiki and had 5 minutes of extra time (although don’t tell my manager that last part) :smile:

1 Like
15

The function is weird because you normally only use it for its side effects. The direct result of using it is either 0 or 1. If you use it in set, with ${}. the result is the equivalent of set(1=) or set(0=). I’m not sure if Asterisk will allow variables with those name to be set.

If you use it in set without ${}, it does nothing, because, as has been said, there is no write handler for the function.

16

I try but it’s like after hangup the rest of the instructions are not executed at all.

[crm_incoming_call]
exten => 2121,1,NoOp(Appel entrant crm teste)
same => n, Set(CHANNEL(language)=fr)
same => n, Playback(Bienvenue)
same => n,Read(Digits,Choixlangue)
same => n,NoOp(${Digits})

same => n,GoSub(disponible,s,1)
same => n,Answer()
same => n,Set(${QUEUE_VARIABLES(crm_strategy)}=)

same => n,Queue(crm_strategy,[t],120)
same => n,NoOp(la veleurs holdtime est de = ${QUEUEHOLDTIME}) ;; :disappointed_relieved:is never be executed
same => n,Hangup

17

Is there a configuration to do to inform it directly in my database as for the CDR?

18

Use the h extension, or possibly the newer hangup handlers.

19

Merci! it work.
so,
I just realized that QUEUEHOLDTIME is to inform if and only if the call was to pick up.
Is that QEHOLDTIME also has the same behavior, otherwise how could I display it?