Fabio, this doesn't answer your question directly and it's not Asterisk related in any way, but it's another way to engineer a solution to the problem and I've seen it done before.
Many analog modems will decode the caller ID on the analog line and provide it as part of the 'RING' notification on their serial port. This can be used as input on a script on a computer to log the caller ID and datestamp. For the Asterisk solution you propose to be able to work, the analog line has to support caller ID. If it does that then it will work with any of these modems too. It's a purely passive connection to the line (just bridge it over the pair) and it may be cheaper/simpler/easier for you to build. Food for thought? Pete > On 21/04/2017, at 8:26 am, Fabio Moretti <fmore...@tecytal.com> wrote: > > Hi, > > I've some analogic lines and I'm asked if it's possible to program an > asterisk for "checking" the inbound calls without answering them, doing > something like this: > > analog line 1 -----+---------- asterisk > | > \______ analog phone > > when a call enter, asterisk sense it and store its values (callerid, date and > time, etc) somewhere, but nothing more, people will answer using the old > analog phone. > The goal is to have a log of the inbound calls without touching the old > analog system (it's shared between different subjects). > > I'm pretty sure it's something possible, but how to tell asterisk: "ok, call > this AGI, and then don't answer and do nothing more". > > Any idea? > > Thanks
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