Patent Number: 6,434,166

Title: Method for universal channel allocation based on DS-0 channelized format

Abstract: A universal DS-0 channelized format is provided wherein selected states of CAS bits are used to indicate to the transport mechanism when DS-0 channels are not being used for voice and are available for use for data transport. In addition, the T1 frame format carries CAS bits only in the first DS-0 channel, so that robbed bits are disabled and not used to carry ABCD signaling bits, thereby avoiding any risk of data corruption. Still further, a special CAS signaling value not defined as a CAS state, is employed in a frame nibble instead of a frame counter to indicate that the state is in the first DS-0 slot.

Inventors: Buckland; Kenneth M. (Rohnert Park, CA), Hobbel; Jan C. (Cotati, CA), Manchester; Earl B. (Rohnert Park, CA)

Assignee: Cisco Technology, Inc.

International Classification: H04J 3/12 (20060101); H04J 3/16 (20060101); H04L 012/66 (); H04L 012/28 (); H04J 003/12 ()

Expiration Date: 08/13/2019