In this modern era, digital phone technology has made communication faster and more efficient. However, there are several synonyms for digital phone that are often used interchangeably. One common synonym is VoIP (Voice over Internet Protocol), which refers to phone calls made over the internet rather than traditional phone lines. Another synonym is IP phone, which also utilizes internet protocol to transmit voice signals. Digital telephony and internet phone are two other synonyms that are widely used. Overall, these terms all refer to the use of digital technology to make phone calls, whether through the internet or traditional phone lines.