Dynamic assignment of subrate voice channels in telecommunication networks
First Claim
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1. In the telecommunications network, a method of establishing a voice call comprising the steps of:
- compressing a plurality of incoming full-rate signals including signals for said voice call into a plurality of subrate signals;
combining said plurality of subrate signals into a composite full-rate signal;
switching said composite signal through a switching fabric of a first switching system;
dynamically assigning a trunk of said first switching system connected to another switching system of said telecommunications network for carrying said composite signal;
in said first switching system, switching said composite signal toward said assigned trunk; and
transmitting said composite signal over said trunk to said another switching system for decompression and transmission of said signals for said voice call toward a destination of said voice call.
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Abstract
Apparatus for switching full-rate (e.g., 64 kilobit per second) signals and composite signals comprising a plurality of sub-rate signals (e.g., 32 kilobit per second sub-rate signal). The apparatus includes a unit for compressing selected ones of a plurality of full rate signals into a smaller plurality of full rate single and composite signals, and apparatus for expanding composite signals into full rate signals. Advantageously, during periods of heavy load, the switching network fabric of a switching system can carry more calls, and more traffic can be carried between switches equipped for sub-rate switching.
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5 Claims
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1. In the telecommunications network, a method of establishing a voice call comprising the steps of:
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compressing a plurality of incoming full-rate signals including signals for said voice call into a plurality of subrate signals; combining said plurality of subrate signals into a composite full-rate signal; switching said composite signal through a switching fabric of a first switching system; dynamically assigning a trunk of said first switching system connected to another switching system of said telecommunications network for carrying said composite signal; in said first switching system, switching said composite signal toward said assigned trunk; and transmitting said composite signal over said trunk to said another switching system for decompression and transmission of said signals for said voice call toward a destination of said voice call. - View Dependent Claims (2, 3, 4, 5)
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Specification