Patent ID: 6393033
Filing Date: 2002-05-21
Classification: H04L,H04Q

Abstract:
A method of encapsulating ISDN data into a payload field of a data packet, where the ISDN data arrives as a first B channel, a second B channel, and a D channel, all time-multiplexed onto a single physical channel, said method comprising the steps of:(a) receiving 4 bits of first B channel data from the single physical channel and inserting them in the payload field of the data packet, receiving 4 bits of second B channel data from the single physical channel and inserting them in the payload field of the data packet, and receiving 1 bit of D channel data from the single physical channel and inserting it in the payload field of the data packet; (b) repeating step (a) 7 times to yield 4 bytes of first B channel data, 4 bytes of second B channel data, and 1 byte of D channel data in the payload field of the data packet; and wherein the data is arranged in the payload field of the data packet such that a pattern exists which comprises 4 bytes of first B channel data, 4 bytes of second B channel data, and 1 byte of D channel data.