Architecture for distribution of voice over ATM networks
First Claim
Patent Images
1. A telecommunications network for routing telephone calls from sources to destinations comprising:
- a plurality of access unit means, coupled to the sources and destinations, for converting incoming calls from the sources into incoming packets, for reconstructing outgoing calls from outgoing packets, and for routing to the destinations the reconstructed outgoing calls, each of the access unit means acting as source access unit means when converting incoming calls and as destination access unit means when routing outgoing calls to the destinations;
packet switching means, coupled to the plurality of access unit means through input and output ports, for routing the incoming packets received from the source access unit means through the input ports to a channel switching port, and for routing the outgoing packets received from the channel switching port to the output ports coupled to the destination access unit means corresponding to the destinations of the outgoing packets; and
channel switching means, coupled to the packet switching means through the channel switching port, for converting the incoming packets into the outgoing packets and for causing the packet switching means to route the outgoing packets to the ones of the output ports of the packet switching means that couple to the destination access unit means corresponding to the destinations of the outgoing packets, wherein said channel switching means is separated from said plurality of access unit means.
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Abstract
A telecommunications network provides efficient switching for voice-over-data lines by having access units coupled to the sources and destinations of telephone calls using virtual channels created in a packet switch to connect to a channel switch that converts incoming packets into the outgoing packets and causes the packet switch to route the outgoing packets to the proper access units.
37 Citations
16 Claims
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1. A telecommunications network for routing telephone calls from sources to destinations comprising:
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a plurality of access unit means, coupled to the sources and destinations, for converting incoming calls from the sources into incoming packets, for reconstructing outgoing calls from outgoing packets, and for routing to the destinations the reconstructed outgoing calls, each of the access unit means acting as source access unit means when converting incoming calls and as destination access unit means when routing outgoing calls to the destinations; packet switching means, coupled to the plurality of access unit means through input and output ports, for routing the incoming packets received from the source access unit means through the input ports to a channel switching port, and for routing the outgoing packets received from the channel switching port to the output ports coupled to the destination access unit means corresponding to the destinations of the outgoing packets; and channel switching means, coupled to the packet switching means through the channel switching port, for converting the incoming packets into the outgoing packets and for causing the packet switching means to route the outgoing packets to the ones of the output ports of the packet switching means that couple to the destination access unit means corresponding to the destinations of the outgoing packets, wherein said channel switching means is separated from said plurality of access unit means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for routing telephone calls in a telecommunications network from sources to destinations comprising the steps of:
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converting at a plurality of access units incoming telephone calls from the sources into incoming packets; receiving at ports of a packet switch the incoming packets from the access units; routing the incoming packets to a channel port coupled to a channel switching unit; converting the incoming packets received at the channel switching unit into outgoing packets, wherein said channel switching means is separated from said plurality of access unit means; routing the outgoing packets to the ports of the packet switch that couple into the appropriate access units; converting the outgoing packets received at the plurality of access units into outgoing calls; and routing the outgoing calls to the destinations. - View Dependent Claims (15)
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16. A method for configuring a telecommunications network having access units, channel switching units, and a packet switching means, comprising the steps of:
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determining a number of channel switching units, N, as;
##EQU9## where Tmin is the minimum number of channels between each of the access units and the packet switching means, Bmax is the channel capacity of the channel switching unit, and Tch is the total number of channels in the network;determining the maximum number of channels for each channel switching unit, Dmax, as;
##EQU10## coupling the access units and the channel switching units to a packet switching means; andassigning each of the access units to one of the channel switching units such that none of the channel switching units has more than the maximum number of channels, Dmax.
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Specification