User:Ajoyz/Books/Telephone-05

Telephone-05

 * Ground start
 * Loop start
 * Foreign exchange service (telecommunications)
 * Business telephone system
 * Telephone exchange
 * Local loop
 * Disconnect supervision
 * Clearing (telecommunications)
 * 5ESS switch
 * Crossbar switch
 * DMS-100
 * Ringtone
 * Circuit ID
 * Telecommunications network
 * Local exchange carrier
 * Local access and transport area
 * Telephone company
 * CLLI code