User:Ajoyz/Books/Telephone-03

Telephone-03

 * Telephone exchange
 * Telecommunication
 * Telephone numbering plan
 * Public switched telephone network
 * Telephone call
 * Dial tone
 * Inside plant
 * Business telephone system
 * Twisted pair
 * Dual-tone multi-frequency signaling
 * Plain old telephone service
 * Rotary dial
 * Electromagnetic interference
 * Crosstalk (electronics)
 * Sidetone
 * Hybrid coil
 * Impedance matching
 * Galvanic corrosion
 * Telephone line
 * Ringdown
 * Panel switch
 * Crossbar switch
 * Cord circuit
 * Phone connector (audio)
 * Off-hook
 * On-hook
 * Automatic number identification
 * Signaling (telecommunications)
 * Signalling System No. 7
 * Common-channel signaling
 * Nonblocking minimal spanning switch
 * Class 5 telephone switch
 * Switched fabric
 * Network topology
 * Limited availability
 * Pair gain
 * Softswitch
 * Plesiochronous digital hierarchy
 * Telephone exchange names