System and method for modifying an information signal in a telecommunications system
First Claim
1. A method for selectively modifying an information signal at a remote site in a telecommunications system having a head end and a number of remote sites connected to form a ring, the method comprising:
- receiving, at the head end, an initiation signal that indicates when to start modifying the information signal;
selectively retrieving at least one stored modification signal;
transmitting the modification signal to at least one selected remote site over a packet ring network that supports Ethernet packets;
switching the Ethernet packets off the packet ring network based on an identifier within the Ethernet packet at the selected remote site;
modifying the information signal with the modification signal;
detecting the end of the modification signal; and
ending the modifying of the information signal.
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Accused Products
Abstract
A method for selectively modifying an information signal at a remote site in a telecommunications system having a head end and a number of remote sites connected to form a ring. An initiation signal is received at a head end. The initiation signal indicates when to start modifying the information signal. Further, the method retrieves at least one stored modification signal. The method also transmits the modification signal to at least one selected remote site over a packet ring network of the telecommunications system. The packet ring network includes ring switches that self-learn the location of network devices based on addresses in packets processed by the switches and which learn that addresses of network devices associated with other ring switches are reachable out of at least one ring port of the ring switch. The information signal is modified with the modification signal. The method also detects the end of the modification signal and ends the modifying of the information signal.
141 Citations
29 Claims
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1. A method for selectively modifying an information signal at a remote site in a telecommunications system having a head end and a number of remote sites connected to form a ring, the method comprising:
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receiving, at the head end, an initiation signal that indicates when to start modifying the information signal; selectively retrieving at least one stored modification signal; transmitting the modification signal to at least one selected remote site over a packet ring network that supports Ethernet packets; switching the Ethernet packets off the packet ring network based on an identifier within the Ethernet packet at the selected remote site; modifying the information signal with the modification signal; detecting the end of the modification signal; and ending the modifying of the information signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A telecommunications system, comprising:
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a ring transport system that includes at least one channel that is used to transport Ethernet packets; a head end coupled to the ring transport system; at least one remote site coupled to the ring transport system; the ring transport system including at least one other channel for transporting an information signal between the head end and the at least one remote site; the head end including a signal source that is coupled to transmit modification signals on the at least one channel of the ring transport that transmits Ethernet packets; and at the remote sites, switching the Ethernet packet off the ring transport system based on an identifier within the Ethernet packet to at least one addressable decoder card that decodes the modification signals from the signal source and that uses the decoded signals to modify the information signal. - View Dependent Claims (8, 9, 10)
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11. A method for selectively modifying an information signal at a remote site in a telecommunications system having a head end and a number of remote sites connected to form a ring, the method comprising:
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receiving, at the head end, an initiation signal that indicates when to start modifying the information signal; selectively retrieving at least one stored modification signal; transmitting the modification signal to at least one selected remote site over a packet ring network of the telecommunications system with ring switches that self-learn the location of network devices based on addresses in packets processed by the switches and which learn that addresses of network devices associated with other ring switches are reachable out of at least one ring port of the ring switch; modifying the information signal with the modification signal; detecting the end of the modification signal; and ending the modifying of the information signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A telecommunications system, comprising:
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a ring transport system that includes at least one channel that is used to transport data packets over a ring including a number of ring switches wherein the ring switches self-learn the location of network devices based on addresses in packets processed by the ring switches and which learn that addresses of network devices associated with other ring switches are reachable out of at least one ring port of the ring switch; a head end coupled to the ring transport system and coupled to one of the ring switches; at least one remote site coupled to the ring transport system, each remote site including one of the ring switches; the ring transport system including at least one other channel for transporting an information signal between the head end and the at least one remote site; the head end including a signal source that is coupled to transmit modification signals on the at least one channel of the ring transport that transmits data packets; and at the remote sites, at least one addressable decoder card that decodes the signals from the signal source and that uses the decoded signals to modify the information signal. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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Specification