If you are referring to the traditional PSTN phone, the signals that it receives are analog. If you want to know about VOIP phone, it is digital in nature. However, analog can be converted to digital by using a device called ATA.
analog device
ATA or analog telephone adapter will automatically connected to the when is it connected to internet.
An antenna is analog it is not classified as being a digital device.
ATA (analog telephone adapter
The first analogue computing device was the human mind. Yes, it's true; the human mind is an analog device.
The examples of analog devices are as following: 1. The telautograph 2. Analog synthesizer 3. Analog television 4. Analog Computer
MODEM (Modulator - Demodulator) allows communication between computers.Generally Modem connects to ISP over analog telephone line and further ISP connects to Computers over Internet.
You need a modem.AnswerAn analog telephone adapter (ATA)- this is a device used in connecting analog telephone to other digital system.
When you convert digital signal to analog, it is called as an analog signal. The device used is called digital to analog converter.
A modem (which stands for Modulator-Demodulator) converts digital data from the computer to analog data compatible with the telephone system. The analog signal is converted back into digital data on the other end of the call.
DAC - Digital to Analog ConverterADC - Analog to Digital Converter
Analog data transmissions occurs every time you log onto the internet using your pc, your modem, and your telephone line.