The digital switching is controlled through a digital communication protocol.
The invention also concerns a device and a system for digital switching.
A dynamic RF matrix emulator uses digital switching to emulate the switching behavior of hundreds of wireless terminals.
In the case of at least one of the actuation circuits (42, 82), the switching behaviour thereof can be defined by at least one digital switching parameter.
The calibration circuit includes an analog-to-digital converter (406) for converting at least one DC offset voltage associated with the digital switching amplifier (400) to digital offset data.
Improved settling time of the digitally switched impedance is achieved by reducing the amount of switch capacitance connected to the output of the digitally switched impedance.
Service is switched digital to analog during the power outage event.
The apparatus is provided with add/drop units (TTF, TSAF, LCS) and a digital switch matrix (LPX).
The AGC circuit may comprise a digitally switched attenuator under the control of a microprocessor performing the speech recognition.
The output terminals of the digital switch matrix are connected to the second network (STM-N).
The digital channelizer divides the sub-band spectrum into a plurality of frequency slices  that can be routed by the digital switch matrix  to any of a number of receiving ports .
A public switched telephone network comprises a plurality of digital main switching units each including a gateway mobile switching centre for a public communications network.
Also, a digital main switching unit for a public switched telephone network includes a gateway mobile switching centre for a public communications network.