I suggest Seeed...

Arduino Dial Up Modem shield

Dial Up modem's days are long gone but Land line still exists either in the form of home pbx or PSTN, An Arduino based Dial Up modem shield can be used for a lot of fun projects.
Modem chips are already available with AT Command support
Currently there is no shield to interface arduino with phone line
This shield can also become a base for Arduino corded telephony with additional sheilds for setting up arduino based Home PABX e.g 4 port intercom shield or Voip shield

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Bobby shared this idea  ·   ·  Flag idea as inappropriate…  ·  Admin →
Planned  ·  Jacket Chen responded  · 

That’s a gooood idea, we’re going to start it from forum.

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  • Burraak commented  ·   ·  Flag as inappropriate

    It can be used as
    1-Cold Caller Blocker
    2-Telephone recording with Caller ID
    3-Fax receiving/saving
    4-Answering machine
    5-Interactive voice response system
    6-Home automation over landline
    7-Foundation for Arduino based PABX
    8-DATA Communication
    9-Auto dialer (Connected over blutooth to smart phone's phone directory)
    10- GSM to Landline gateway
    11- Smart Telephone set
    12- Call forwarding

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