[asterisk-dev] Check if channel exists

[Johan Wilfer]

Julian Lyndon-Smith skrev:
> Johan Wilfer wrote:
>   
>> I need to get a channel name to be able to use the ChannelRedirect 
>> application. The group function doesn't provide this, it is however 
>> handy for a lot of other things.
>>   
>>     
>
> Slightly confused then : you originally said:
>
> "I thinking about a function ChanActive(channel)"
>
> Don't you already need to know the channel name at this point, then ?
>
> Or are you looking for a way of knowing what channel  is associated with 
> an extension (SIP/576) or line (ZAP/1)
>
> Julian
>   
I guess my brain has begun melting.
No you are right, I won't need this as it could be done with the current 
set of applications and functions.

Do you know if there is a short answer on the channel renaming thing? 
When does this happen? On bridging?
Because if it can occur during a conference or during ordinary dialplan 
execution I've a fatal flaw in my logic..

/Johan


>> Thanks anyway...
>> /Johan
>>
>> Julian Lyndon-Smith skrev:
>>   
>>     
>>> Have a look at the GROUP function.
>>>
>>> Julian
>>>
>>> Johan Wilfer wrote:
>>>   
>>>     
>>>       
>>>> Hi,
>>>> I'm in need of a application / function that check if a channel is
>>>> active or not. The functionality already exists in "core show channel
>>>> <name>" and "sip show channel <name>", but I have not found any function 
>>>> / application that does the trick. Does anyone have a similar need that 
>>>> I should consider? Any other way to deal with this?
>>>>
>>>> I thinking about a function ChanActive(channel) that returns true/false 
>>>> or ChanInfo(channel,item) like sipchaninfo. If I'm the only one with 
>>>> this particular need I will implement the first one.
>>>>
>>>> Another related question (maybe user-ish, sorry): I've tried to
>>>> understand in witch cases a channel can change it's name (Manager Rename 
>>>> event). I'm I correctly assuming that this happens only when bridging to 
>>>> another channel? Or are there other cases that I should be aware of?
>>>> Is this documented somewhere?
>>>>
>>>> Greetings
>>>> Johan
>>>>
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>>>>       
>>>>         
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