1. the technology or practice of transmitting voice communications over distances using telephones or similar devices

Examples

• The company specializes in digital telephony solutions for businesses.
• Modern telephony has evolved from landlines to mobile networks.
• Voice over Internet Protocol represents the latest advancement in telephony.
• The telephony industry has transformed dramatically over the past century.
• She studied telephony systems as part of her telecommunications degree.
• The office’s telephony infrastructure needed a complete upgrade.