Multi-service channelized sonet mapper framer
View Patent ↗An embodiment of a multi-service mapper framer device and methods for operating same are described. This device may support the interconnection of synchronous optical networks using the SONET and SDH standards to Ethernet packet networks, and may be capable of mapping up to 2.5 gigabits per second of traffic from a variety of client-side interfaces including time division multiplex T1/E1 and T3/E3 data interfaces, a System Packet Interface, and Ethernet packet data interfaces. The device may support a trunk-side connection using a T3/E3 data interface, and the ANSI T1X1.5 Generic Framing Procedure and ITU X.86 Ethernet-over-SONET Recommendation may also be supported. Functionality to enable Virtual Concatenation with Link Capacity Adjustment Scheme may be included.
1. A multi-service mapper framer comprising:
an integrated chip, comprising:
at least one on-chip network interface for formatting a receive serial data stream from a synchronous optical communication link receive path, producing a channelized receive data stream, and for formatting a channelized transmit data stream, producing a transmit serial data stream for transmission on a synchronous optical communication link transmit path;
at least one on-chip cross-connect for de-multiplexing the channelized receive data stream, producing at least one receive data channel, and for multiplexing at least one transmit data channel, producing the channelized transmit data stream;
at least one on-chip packet mapper for mapping at least one of the at least one receive data channel, producing a receive packet data stream, and for de-mapping a transmit packet data stream, producing at least one of the at least one transmit data channel;
at least one on-chip packet data interface for packetizing the receive packet data stream producing a receive packet stream, and for de-packetizing a transmit packet stream into the transmit packet data stream;
at least one on-chip DS1/E1 data interface for framing at least one of the at least one receive data channel, producing a time division multiplexed receive data stream, and for framing a time division multiplexed transmit data stream producing at least one of the at least one transmit data channel;
at least one on-chip DS3/E3 data interface for framing at least one of the at least one receive data channel, producing a time division multiplexed receive data stream, and for framing a time division multiplexed transmit data stream producing at least one of the at least one transmit data channel;
at least one on-chip telecom bus interface for transferring data from at least one of the at least one receive data channel to an external device, and for transferring to at least one of the at least one transmit data channel data from the external device; and
at least one on-chip microprocessor unit arranged in order to allow information to be exchanged with at least one of the at least one network interface, the at least one cross-connect, the at least one packet mapper, the at least one packet data interface, the at least one DS1/E1 interface, the at least one DS3/E3 interface, and the at least one telecom bus interface.
2. The multi-service mapper framer of claim 1 , wherein the at least one on-chip network interface is compatible with the Telcordia GR-253-CORE or corresponding later SONET standard.
3. The multi-service mapper framer of claim 1 , wherein the at least one on-chip network interface is International Telecommunication Union Synchronous Digital Hierarchy compatible.
4. The multi-service mapper framer of claim 1 , wherein the at least one on-chip network interface is capable of supporting at least SONET STS-3 capacity on each of the receive serial data stream and the transmit data stream.
5. The multi-service mapper framer of claim 1 , wherein the at least one on-chip network interface supports automatic protection switching compliant with the American National Standards Institute T1.105.01-5000 or corresponding later standard.
6. The multi-service mapper framer of claim 1 , wherein the at least one on-chip packet mapper supports virtual concatenation.
7. The multi-service mapper framer of claim 6 , wherein the at least one on-chip packet mapper implements a link capacity adjustment scheme.
8. The multi-service mapper framer of claim 1 , wherein the at least one on-chip packet mapper implements the American National Standards Institute T1X1.5 or corresponding later generic framing procedure.
9. The multi-service mapper framer of claim 1 , wherein the at least one on-chip packet mapper implements the International Telecommunications Union X.86 Ethernet Over SONET recommendation.
10. The multi-service mapper framer of claim 1 , wherein the at least one on-chip packet mapper implements the Internet Engineering Task Force RFC 1662 or corresponding later point-to-point protocol specification.
11. The multi-service mapper framer of claim 1 , wherein the at least one on-chip packet mapper comprises an interface to permit access to external memory.
12. The multi-service mapper framer of claim 1 , wherein the at least one on-chip packet data interface comprises at least one packet interface compatible with the IEEE 802.3z or later equivalent Gigabit Ethernet standard.
13. The multi-service mapper framer of claim 1 , wherein at least one of the at least one on-chip DS3/E3 interface may be arranged to operate as a trunk side interface.
14. The multi-service mapper framer of claim 1 , wherein each of the outgoing and incoming paths of the at least one on-chip telecom bus interface is of at least STS-3 capacity.
15. A method of operating a multi-service mapper framer, the method comprising:
performing by an integrated chip, functions comprising:
framing a receive serial data stream from a synchronous optical communication link receive path into a channelized receive data stream;
de-multiplexing the channelized receive data stream, producing at least one receive data channel;
mapping at least one of the at least one receive data channel, producing a receive packet data stream;
packetizing the receive packet data stream producing a receive packet stream; de-packetizing a transmit packet stream into a transmit packet data stream;
de-mapping the transmit packet data stream, producing at least one transmit data channel;
multiplexing the at least one transmit data channel, producing a channelized transmit data stream; and
formatting the channelized transmit data stream producing a transmit serial data stream for transmission on a synchronous optical communication link transmit path.
16. The method of claim 15 , comprising collecting at least one statistic related to the packetizing and de-packetizing actions.
17. The method of claim 15 , comprising:
mapping at least one of the at least one receive data channel to a time-division multiplex receive data channel;
multiplexing the time division multiplex receive data channel into a time division multiplex receive signal;
framing a time division multiplex transmit signal into a time division multiplex transmit data channel; and
de-mapping the time division multiplex transmit data channel into at least one transmit data channel.
18. A machine-readable memory, having stored thereon a computer program having a plurality of code sections for implementing a multi-service mapper framer, the code sections executable by a machine for causing the machine to perform the operations comprising:
performing by an integrated chip, functions comprising:
framing a receive serial data stream from a synchronous optical communication link receive path into a channelized receive data stream;
de-multiplexing the channelized receive data stream, producing at least one receive data channel;
mapping at least one of the at least one receive data channel, producing a receive packet data stream;
packetizing the receive packet data stream producing a receive packet stream; de-packetizing a transmit packet stream into a transmit packet data stream;
de-mapping the transmit packet data stream, producing at least one transmit data channel;
multiplexing the at least one transmit data channel, producing a channelized transmit data stream; and
formatting the channelized transmit data stream producing a transmit serial data stream for transmission on a synchronous optical communication link transmit path.
19. The machine-readable storage of claim 18 , comprising collecting at least one statistic related to the packetizing and de-packetizing actions.
20. The machine-readable storage of claim 18 , comprising:
mapping at least one of the at least one receive data channel to a time-division multiplex receive data channel;
multiplexing the time division multiplex receive data channel into a time division multiplex receive signal;
framing a time division multiplex transmit signal into a time division multiplex transmit data channel; and
de-mapping the time division multiplex transmit data channel into at least one transmit data channel.