Telephony and Switching Systems Q&As

Telephony and Switching Systems Past Questions and Answers is a collection of exam questions and model answers designed to help students prepare for HND examinations on voice traffic over conventional telephone networks and IP networks. It covers general principles of telephony, the architecture of public and private telephone networks, switching hierarchy, IP telephony norms and protocols, VoIP equipment, and security in IP telephony, helping students practice likely past exam questions on PSTN, ISDN, and modern IP-based communication systems.