To provide a communication system that enables a call without the need for using an operation keypad of a communication equipment such as a telephone set in the case of making a call to other communication equipment.

When a voice input section 36b of a portable slave unit 3b designates other communication equipment being a communication destination in voice, a master unit 3a receives this voice signal via wireless sections 37b, 37a, a designated code acquisition means 38 of the master unit 3a transmits the voice signal to a computer 2, a voice recognition means 25 of the computer 2 recognizes the voice signal, a retrieval means 26 retrieves a communication destination DB 23 on the basis of the recognition, a designated code of the communication equipment being the designated communication destination is acquired, and a call means 39 using the acquired designated code conducts call processing.