Communicating in voice and data communications systems
View Patent ↗A data and voice communication system includes communication between a line card and an accelerator card. Voice, data, and control traffic is received from the line card and is transmitted to the accelerator card via a physical link having separate voice, data, and control logical channels. The separate voice, data, and control logical channels are represented by labeled data packets.
1. A communication system comprising:
a first card that is configured to provide input and output interfaces and receive data over at least one interface in accordance with one of a plurality of communication protocols, which includes at least an internet protocol (IP) packet protocol; and
a second card that is interconnected with the first card;
the first card configured to send the received data in a data structure cell to the second card over a link in one of a plurality of logical channels, wherein the plurality of logical channels are configured to concurrently transfer
data over a plurality of communication protocols, each communication protocol of the plurality of communication protocols specifying a procedure for communication independent of data and data type carried by the communication protocol, and
control data over the link in data structure cells that include a payload field that carries a payload in accordance with the plurality of communication protocols and a header field that includes a plurality of fields including a channel indication and the first card configured to provide per logical channel flow control to independently control transfer of data over logical channels.
2. The communication system of claim 1 , wherein the first card includes a plurality of channel receive queues to assert the per logical channel flow control.
3. The communication system of claim 2 , wherein each receive queue corresponds to a logical channel and provides flow control for that channel.
4. The communication system of claim 1 , wherein the first card includes a link first in first out (FIFO) mechanism to maintain receive overflows in the link.
5. The communication system of claim 1 , wherein the first card includes a glue logic to convert from a standard bus interface to the data structure cell and logical channels.
6. The communication system of claim 1 , wherein the link is a serial link and the first card includes a serializer/deserializer (SERDES).
7. The communication system of claim 1 , wherein the first card provides priority servicing of the logical channels.
8. The communication system of claim 1 , wherein the first card provides load sharing over multiple active links.
9. A method comprising:
receiving, at a first card, data in one of a plurality of communication protocols, each communication protocol of the plurality of communication protocols specifying a procedure for communication independent of data and data type carried by the communication protocol, wherein the plurality of communication protocols includes at least an internet protocol (IP) packet protocol;
sending the received data from the first card to a second card over a link in one of a plurality of logical channels;
concurrently transferring data over a plurality of communication protocols and control data over the link in data structure cells that include a payload field that carries a payload in accordance with the plurality of communication protocols and a header field that includes a plurality of fields including a channel indication; and
providing per logical channel flow control to independently control transfer of data in data structure cells over the plurality of logical channels.
10. The method of claim 9 , further comprising maintaining a plurality of channel receive queues to assert the per logical channel flow control.
11. The method of claim 10 , wherein each receive queue corresponds to a logical channel and provides flow control for that channel.
12. The method of claim 9 , further comprising maintaining a link first in first out (FIFO) mechanism to monitor receive overflows in the link.
13. The method of claim 9 , further comprising converting from a standard bus interface to the data structure cell and logical channels using a glue logic.
14. The method of claim 9 , further comprising providing priority servicing of the logical channels.
15. Logic encoded on one or more tangible, non-transitory media for execution and when executed configured to:
receive, at a first card, data in one of a plurality of communication protocols, each communication protocol of the plurality of communication protocols specifying a procedure for communication independent of data and data type carried by the communication protocol, wherein the plurality of communication protocols includes at least an internet protocol (IP) packet protocol;
send the received data from the first card to a second card over a link in one of a plurality of logical channels;
concurrently transfer data over a plurality of communication protocols and control data over the link in data structure cells that include a payload field that carries a payload in accordance with the plurality of communication protocols and a header field that includes a plurality of fields including a channel indication; and
provide per logical channel flow control to independently control transfer of data in data structure cells over the plurality of logical channels.
16. The logic of claim 15 , further comprising maintaining a plurality of channel receive queues to assert the per logical channel flow control.
17. The logic of claim 16 , wherein each receive queue corresponds to a logical channel and provides flow control for that channel.
18. The logic of claim 15 , further comprising maintaining a link first in first out (FIFO) mechanism to monitor receive overflows in the link.
19. The logic of claim 15 , further comprising converting from a standard bus interface to the data structure cell and logical channels using a glue logic.
20. The logic of claim 15 , further comprising providing priority servicing of the logical channels.