landline telephone pseudo-PABX

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(Apologies in advance if I have already posted this here long
enough ago that I don't remember doing it.)

Does anyone here happen to know of software and hardware that
works on/with a Raspberry Pi for landline telephone that combines
caller-ID blocking with a multi-box answering machine?

Here are the features I'm looking for:
    = Caller-ID routing:
        - Numbers/names in whitelist ring through or go to
          answering machine if not picked up in N rings.
        - Numbers/names in blacklist go directly to answering
          machine with a greeting similar to "You have been
          blacklisted. welcome to purgatory."  (Other numbers get
          a nicer greeting.)
        - Other numbers are prompted to press a digit to ring
          through.  If no digit, go to answering machine.
        - Transfer call logs to other computer via SD card or
          over network.
    = Answering machine function:
        - Allow messages to be moved to one of multiple boxes,
          ideally separating blacklist, whitelist, and non-list
          messages as they are received.
        - At least three boxes for messages to be moved to after
          receipt.
        - Copy messages to an SD card or transfer over network.
    = User interface:
        - Preferably a keypad or touch screen.

I'm understand there are USB devices that could handle the
hardware interface, and I'm sure the Raspberry Pi is more than
fast enough.  I'd love to develop the software to do that if I
only had the spare time.

Does anyone know of existing software (or maybe even just a
software toolkit/library) and a best-known hardware
bill-of-materials for doing that?

Thanks,

--  
Robert Riches
snipped-for-privacy@jacob21819.net
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Re: landline telephone pseudo-PABX
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Asterisk is the usual answer here. It will do all you want, and more,
however I'm not sure what the current state of "appliance" type
installations are. I build my own and have my own web based
front end for it all, etc.

I use a separate (Grandstream) ATA (Analog Telephone Adapter) that plugs
into the incoming phone line (and lets me plug in an old rotary dial
phone - internal house phones are SIP/DECT - Gigastream models)

Gordon

Re: landline telephone pseudo-PABX
On Wed, 11 Apr 2018 05:57:46 -0000 (UTC)

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    Does that ATA pass the external line through to asterisk so that
the caller ID on the external line can be seen by asterisk ? All the cheap
ATAs I've seen just have a relay that switches the external line onto the
phones for an incoming call rather than passing it through SIP.

--  
Steve O'Hara-Smith                          |   Directable Mirror Arrays
C:\>WIN                                     | A better way to focus the sun
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Re: landline telephone pseudo-PABX
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Yes. It looks like a SIP device to Asterisk. (well 2 SIP devices) It's
the HT-503 model.

Downside is that it's a stand-alone device and not USB, so needs Ethernet
and PSU plumbing. Actually, that's not really a downside in the grand
scheme of things, however...

Obviously you need a POTS phone provider that passes through the caller-id
number.

If I phone home from my mobile, I see:

    -- Executing [1234@fromSIP-pstn:1] NoOp("SIP/pstn-000001f7", "Incoming SIP call from "" <077........> @ pstn calling 1234") in new stack


Gordon

Re: landline telephone pseudo-PABX
On Wed, 11 Apr 2018 12:00:35 -0000 (UTC)

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    I need to remember this one - for the next time I have a POTS line
to deal with, it's almost as cheap as the nasty ones where the FXO is just
a relay away from direct connection to the FXS and doesn't present as a
SIP device at all (all too common - if buying one watch out for this) and a
*lot* more useful.

--  
Steve O'Hara-Smith                          |   Directable Mirror Arrays
C:\>WIN                                     | A better way to focus the sun
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Re: landline telephone pseudo-PABX
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Excellent!  Thank you very much for the pointer to the device and
the recommendation for Asterisk.

--  
Robert Riches
snipped-for-privacy@jacob21819.net
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