Claims
- 1. A bit oriented digital switch for PCM transmission systems, for controlled change of bit position and PCM word of selected bits and bit groups in PCM words received by said switch, said switch comprising:
- (a) a first plurality of speech memories for storing the received PCM words, where said plurality is the number of bits in a PCM word, and where each received PCM word is stored once in each of said speech memories;
- (b) means for controlling selection of one PCM word from each speech memory;
- (c) a second plurality of word memories, where said second plurality is the number of bits in a PCM word, for storing the selected PCM words; and
- (d) a third plurality of bit memories;
- (e) means for controlling selection of one arbitrary bit from each word memory for forming a new PCM word in said bit memories as an output of said bit oriented digital switch.
- 2. A bit oriented digital switch in accordance with claim 1, wherein each of said PCM words comprise eight bits.
- 3. A general digital switch for PCM transmission systems for switching of PCM words on both word and bit level, comprising:
- a word oriented digital switch with a plurality of inputs and a plurality of outputs for space and time switching entire PCM words received from components in a PCM transmission system, and
- at least one bit oriented digital switch connected to said word oriented digital switch for receiving PCM words from said word oriented digital switch, for changing bit position and PCM word of selected bits and bit groups in the received PCM words and for outputting these new PCM words to said word oriented digital switch.
- 4. The general digital switch in accordance with claim 3, further comprising means for determining when demand for switching on the bit level increases, wherein further bit oriented digital switches are being connected to said word oriented switch when the demand for switching on bit level increases.
- 5. The bit oriented digital switch in accordance with claim 1, wherein said means for controlling selection of one PCM word is controlled by a regional processor and a central processor.
Priority Claims (1)
Number |
Date |
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Kind |
9200384 |
Feb 1992 |
SEX |
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Parent Case Info
This application is a continuation of Application Ser. No. 08/015,395, filed Feb. 9, 1993 now abandoned.
US Referenced Citations (9)
Continuations (1)
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Number |
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Parent |
15395 |
Feb 1993 |
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