Method of managing voice buffers in dynamic bandwidth circuit emulation services
First Claim
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1. A method of managing buffers in a SAR (Segmentation and Reassembly) device operating in DBCES (Dynamic Bandwidth Circuit Emulation Service) mode, comprising:
- determining an active channel buffer limit for a virtual circuit dependent on the number of active channels; and
setting the amount of buffering for each active channel equal to the CDV (Cell Delay Variation) plus the active channel buffer limit.
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Abstract
In a method of managing buffers in a SAR (Segmentation and Reassembly) device operating in DBCES (Dynamic Bandwidth Circuit Emulation Service) mode, first an active channel buffer limit is determined. This is dependent on the number of active channels in the virtual circuit. Next, the amount of buffering for each active channel is set equal to the CDV (Cell Delay Variation) plus the active channel buffer limit. This prevents underruns over overruns from occurring when the number of active channels suddenly changes.
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Citations
10 Claims
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1. A method of managing buffers in a SAR (Segmentation and Reassembly) device operating in DBCES (Dynamic Bandwidth Circuit Emulation Service) mode, comprising:
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determining an active channel buffer limit for a virtual circuit dependent on the number of active channels; and
setting the amount of buffering for each active channel equal to the CDV (Cell Delay Variation) plus the active channel buffer limit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A control data structure for a SAR (Segmentation and Reassembly) device capable of implementing DBCES (Dynamic Bandwidth Circuit Emulation Service) mode, comprising:
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a control field having a bit determining whether buffer management is active; and
bits determining the minimum buffering for each channel; and
whereinthe amount of buffering for each active channel is set equal to the CDV (Cell Delay Variation) less active channel buffer limit, which is dependent on the number of active channels. - View Dependent Claims (9, 10)
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Specification