DSL integrated call waiting
DSL modem with management capability
DSL-ready pots device and method
DTMF download technique for digital telephone devices
Dual connection mode equipped communication control apparatus
Dual IP phone and method of telecommunicating by using the same
Dual mode phone line interface
Dual-band modem and service
Dual-circuit telephony
Dynamic frequency passband switching in home phone-line...
Dynamically changeable menus based on externally available data
Dynamically configurable communications network