User:Nbornstein/Books/PGi Intro

Getting up to speed at PGi

 * Basic Telephony
 * Telephone
 * Dual-tone multi-frequency signaling
 * Signaling System No 7
 * Telephone number
 * Telephone numbering plan
 * Toll-free telephone number
 * Long-distance calling
 * Conference call
 * Public switched telephone network
 * Pulse-code modulation
 * Time-division multiplexing
 * PSTN network topology


 * Network Technology
 * OSI model
 * Internet Protocol Suite
 * Virtual private network
 * Generic Routing Encapsulation
 * Multiprotocol Label Switching
 * Quality of service


 * IP Telephony
 * Voice over Internet Protocol
 * Session Initiation Protocol
 * Session border controller


 * Video
 * Videotelephony
 * Videoconferencing
 * Telecollaboration
 * Telepresence