Program-controlled exchange, also known as program-controlled digital exchange or digital program-controlled exchange, usually refers to the switching equipment used in the telephone exchange network, which uses computer programs to control the connection of telephones.
The basic functions of digital program-controlled switches are: subscriber line access, relay connection, billing, equipment management, etc.
In today's fast-paced and technology-driven world, effective communication is essential for success in both personal and professional spheres. However, maintaining...
Introduction In today\'s fast-paced society, communication is essential, especially in businesses and residential homes. A reliable communication system is...