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TDM = Time Division Multiplexing


TDM workpoints are digital system phones without LAN interface. They are connected to the communication platform (PBX) by UP0/E. The phone hardware is incompatible to SIP and HFA phone hardware.

The OpenStage T family and the optiPoint 500 family are part of the TDM devices.


TDM-Workpoints sind digitale System-Telefone ohne LAN-Anschluss und sind über UP0/E an einer Kommunikationsplattform (PBX) angeschlossen. Die Hardware ist in der Regel nicht kompatibel mit der von SIP- und HFA-Workpoints.

Die OpenStage T-Familie und die optiPoint 500-Familie gehören zu den TDM-Telefonen.

See also / Siehe auch