[Asterisk-Users] Re: phone line "roaming"

[Josh Roberson]

Benjamin on Asterisk Mailing Lists wrote:

>On Wed, 15 Sep 2004 14:15:24 +0200, Pavel Jezek <pavel.jezek at i.cz> wrote:
>  
>
>>thanks for idea, but this is not exactly what I need,
>>    
>>
>
>It wasn't supposed to be *exactly* what you need ;-) That's not what a
>mailing list is about. We can give each other clues and ideas for how
>things can be done *in principle*, elaboration and implementation is
>up to whoever wants the feature requested.
>
>  
>
>>assume: one employee working in office (open-space "cubes"),
>>when this employee leave the work, on the same place come another employee
>>so that, I can't ring both lines and can't use bluetooth device :(
>>
>>I thing to do some "login" to phone & asterisk and "download" appropriate extension/phone line
>>according to e.g. username/login id,
>>    
>>
>
>Yes, that's a good thought to elaborate on.
>
>  
>
>>but how to configure/implement?
>>    
>>
>
>The easiest way in terms of both implementation and use is probably to
>use the dialplan and some extensions to trigger the login/logoff
>
>For example, you could use *21 and *22 as a prefix to login and
>logoff, then use DBput/DBget and the built in database to determine
>the state of a virtual extension.
>
>*212000 would tell Asterisk that extension 2000 is now on the device
>from which this was dialled.
>
>*222000 would tell Asterisk to cancel the previous state.
>
>You'd maintain a database entry for each virtual extension (or user
>depending on your) which would be your key. Then when somebody dials
>*21xxxx for that virtual extension, you check the phone it was coming
>from and that is going to be your value for this key.
>
>something along the lines of ...
>
>exten => _*21XXXX,1,DBput(VIRTUAL${EXTEN:3}/physical={CALLERIDNUM})
>
>but ideally you'd want to use something other than CALLERIDNUM to
>identify the physical device.
>
>All you have to do then is check for each incoming call whether there
>is a value stored in the key for the virtual extension in question and
>if there is send the call to the phone associated with that value.
>
>Once you've got this basic functionality working, You can make it more
>fancy with such things as PIN numbers, automatic cancelling of a value
>if the user signs in again on another phone, timeouts taking into
>account office hours etc etc etc.
>
>And if you have done all this, don't forget to share and post the code
>on the Wiki ;-)
>
>rgds
>benjk
>
>  
>
benjk, pavel,

I have had something similar to this i made long ago.  There are a 
couple downfalls, as MWI doesn't work, but all in all, it works great.

http://www.indigent-networks.com/asterisk/roaming.txt

Also note, this is just an EXAMPLE.  I claim no usability for it, even 
though it does work ;)

-twisted