Error control negotiation based on modulation
DC CAFCFirst Claim
1. A method for use in data communications equipment, the method comprising the steps of:
- negotiating a physical layer of a data connection with a far-end data communications equipment to determine a set of parameters for the physical layer of the data connection with the far-end data communications equipment; and
selecting one of a number of error control negotiation sequences as a function of a value of at least one parameter from the set of parameters for the physical layer.
9 Assignments
Litigations
0 Petitions
Accused Products
Abstract
A modem dynamically selects the type of error-control negotiation sequence as a function of a negotiated parameter of the physical layer. In one embodiment of the invention, a modem selects between error-control negotiation sequences as a function of the type of modulation negotiated in the physical layer. In particular, the modem has at least two type of error-control negotiation sequences to select from: "LAPM or Disconnect," and "LAPM, MNP or Buffer." When the modem negotiates a V.32 or higher modulation, the modem uses the "LAPM or Disconnect" error control negotiation sequence. However, when the modem negotiates a V.22 bis or lower modulation, the modem uses the "LAPM, MNP or Buffer" error control sequence.
13 Citations
16 Claims
-
1. A method for use in data communications equipment, the method comprising the steps of:
-
negotiating a physical layer of a data connection with a far-end data communications equipment to determine a set of parameters for the physical layer of the data connection with the far-end data communications equipment; and selecting one of a number of error control negotiation sequences as a function of a value of at least one parameter from the set of parameters for the physical layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. Data communications apparatus comprising:
-
a memory that stores a number of error control negotiation sequences; and processor circuitry that negotiates a physical layer of a data connection with a far-end data communications equipment to determine a set of parameters for the physical layer of the data connection with the far-end data communications equipment, and then selects from memory one of a number of error control negotiation sequences as a function of a value of at least one parameter from the set of parameters for the physical layer. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
Specification