Referenced Items are not available for this document.
A digital telephone concept is described where each subscriber set sends and receives digital signals (8-bit PCM). Duplex, simultaneous operation of extensions on a single pair of wires is made possible by time division multiplex (TDM) techniques. A successful feasibility demonstrator of the concept that operates at 512 kbits/s is also described. It has a digital switch at one end and digital telephones at the other, with up to three extensions talking at one time. The telephones feature a separate digital signaling channel, automatic loop-back testing, and low-power transducers.
Published in:
Communications, IEEE Transactions on
(Volume:29
,
Issue:
11
)
Date of Publication: Nov 1981
- Page(s):
- 1602 - 1608
- ISSN :
- 0090-6778
- Digital Object Identifier :
- 10.1109/TCOM.1981.1094906
- Date of Current Version :
- 06 January 2003
- Issue Date :
- Nov 1981
- Sponsored by :
- IEEE Communications Society
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