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PiTelephone - Raspberry Pi retro dial phone

1970's GPO 746 Telephone VOIP conversion project
  We use VOIP a lot (internet telephony). All our outgoing calls use VOIP, and most of the incoming ones too. Mostly SIP phones, or Skype. The old rotary dial telephones mak… https://37.220.31.213/blog/pitelephone-raspberry-pi-retro-dial-phone/