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A dynamic band allocation system wherein the bands of a SD-I line 20 are divided into a sub-rate band used by sub-rate units and a bit multiplex band, the sub-rate band being used as an on-demand band where a trunk and a channel are selected dynamically for connection according to demand, the bit mu

A dynamic band allocation system wherein the bands of a SD-I line 20 are divided into a sub-rate band used by sub-rate units and a bit multiplex band, the sub-rate band being used as an on-demand band where a trunk and a channel are selected dynamically for connection according to demand, the bit multiplex band being divided into a fixed connection band and a fixed allocation band wherein terminals having a small speed unit are bit multiplexed so that the sum of the signaling speed of the terminals is closest to the speed of the sub-rate unit, and when call is originated from the terminal, selecting only the trunk matching its signaling speed for connection, and further dividing the on-demand band into areas for voice and for data, wherein the ratio of the division of voice/data is changed according to the traffic from time to time.

대표청구항 ▼

[ What is claimed is:] [1.] A dynamic band allocation method in a multiplexing device constituting a network connected by a digital private (SD-I) line, including a plurality of 8 kbps-unit channels, said method comprising the steps of:(a) dividing a band of the SD-I line into a sub-rate band, usabl

[ What is claimed is:] [1.] A dynamic band allocation method in a multiplexing device constituting a network connected by a digital private (SD-I) line, including a plurality of 8 kbps-unit channels, said method comprising the steps of:(a) dividing a band of the SD-I line into a sub-rate band, usable in units of 8 kbps for voice communication or for data communication, and a bit multiplex band, usable in units of 8 kbps, wherein said bit multiplex band is a band for performing bit multiplexing so that the sum of the speeds of the multiplexed terminal devices is not greater than an 8 kbps unit;(b) dividing said sub-rate band into an on-demand band on which a trunk and a channel are selected and connected dynamically in response to a demand, a fixed allocation band on which the trunk and the channel are allocated in advance and only a trunk corresponding to the speed of a calling terminal device is selected when a call is originated from such calling terminal device, and a fixed connection band on which a fixed connection is maintained at all times and no dynamic connection can be made, wherein said on-demand band is formed so that the trunk and the channel of said on-demand band are divided for voice communication and for data communication;(c) dividing said bit multiplex band into a fixed allocation band on which the trunk and the channel are allocated in advance and only a trunk corresponding to the speed of a calling terminal device is selected when a call is originated from such calling terminal device, and a fixed connection band on which a fixed connection is maintained at all times and no dynamic connection can be made;(d) responding to origination of a call by a calling terminal device using said on-demand band by selecting a trunk, connecting such calling terminal device with said selected trunk, selecting a channel, connecting said selected trunk with said selected channel, and communicating the call; and(e) changing the ratio of division of said on-demand band usable for voice communication and usable for data communication based on the volume of the traffic.