Distributed control type electronic switching system
Distributed hardware/software system for managing agent...
Distributed network control and fabric application interface
Distributed predictive and event-driven processing environment
Distributing frame for telecommunications circuits
Distribution frame board
Distribution of calls among automatic call distributors of a sin
Do-not-call compliance management for predictive dialer call...
Drain ground for telephone connector blocks
Drive and positioning method and system for automated switch...
DTMF detection based on LPC coefficients
DTMF signal judging apparatus
DTMF signal judging apparatus
DTMF signal transmission method and communication apparatus
DTMF signal transmission method and communication apparatus
DTMF tone generation in a media gateway
Dual span monitoring system for maintenance shelf control
Dual tone multifrequency signal detection and identification met
Dynamic admission control for telecommunications relay service w
Dynamic and scheduled computer telephony resource allocation