[Asterisk-biz] gotta be a better way

[Bill Michaelson]

Yes, you have consolidated my technique into a single expression.  The 
referenced page is the one on which I failed to find what I was looking 
for.  So perhaps there really is no better way.  C'est la vie.  Thanks 
for the ref.

Further experimentation reveals that hacking off trailing five 
characters is really only reliable for SIP channels on my box, but it 
will do for now.  IAX is problematic not only because of slight 
syntactical differences in the channel string contruction, but because 
of the multiplexed nature of the channel which makes it logically 
impractical to associate a physical device with any segment of the 
channel ID.  The notion of station ID is just not present in this 
circumstance, nor do I think it should be.

But I'll get by for now...

C F wrote:

>So the following will do in your case:
>
>exten => 807,1,Set(DEVICE=${CHANNEL:0:$[${LEN(${CHANNEL})} - 5]})
>Hope you enjoy making out the code, but it should work.
>Anyhow, the documentation is around:
>http://www.voip-info.org/wiki-asterisk+variables
>You just got to use your creativity/imagination to get it done.
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