[asterisk-users] E1 Line Tapping

[Tzafrir Cohen]

On Wed, Sep 05, 2007 at 01:36:02AM -0300, Ricardo Gemignani wrote:
> Hi all,
> 
>   My name is Ricardo and unfortunately I'm just crawling in this
> telecomm/asterisk world. So, after reading all day long i still don't
> understand a few things. :D
> 
>   I'm trying to "develop" a call recorder for a costumer. He has a small
> call center ( 10 agents ) and want to record all calls. Since he already has
> everything (ACD only) working perfectly in the PBX and don't want me to
> "touch" it, I need do develop a  less intrusive as possible system.
> 
>   I was thinking to do a line tapping in his E1 branch before it reaches the
> PBX and record it using Asterisk, then develop a small web interface to
> recover the recordings.
> 
>   In my research about E1 line tapping I found this product from Sangoma (
> http://www.sangoma.com/datasheets/tapping ) but could not understand exactly
> how it really works.
> 
>   Does anybody already used it?
> 
>   Is it possible to use it with Asterisk?

If you work at a lower layer (using such a product, or in similar ways)
you have no clear notion of "calls". You'll have to analyze the dump
later on and actually make use of it.

If you work wityh asterisk (search for "back to back" settings) Asterisk
acts as a proxy: it knows about the calls and reconnects them. Thus
asterisk can provide you with CDR information, better control of what to
record. e.g: you might want to make sure that the system does not record
the extra calls it that are sometimes made to your home ;-)

-- 
               Tzafrir Cohen       
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http://www.xorcom.com  iax:guest at local.xorcom.com/tzafrir