Multiplex communications – Wide area network – Packet switching
Patent
1991-06-27
1993-09-07
Safourek, Benedict V.
Multiplex communications
Wide area network
Packet switching
3701101, 375 7, 375121, H04L 1240
Patent
active
052435938
ABSTRACT:
A method for activating tandem digital subscriber lines separated by a carrier system in a communication link connecting a switch and a network termination is implemented by a microcontroller which interfaces with a digital subscriber line transceiver to extract and transmit activation request information and a programmable gate array to relay and interpret activation information conveyed across the carrier system. The microcontroller intelligently combines the activation information received from the carrier system, the activation indicator bit received from the digital subscriber line transceiver, and the transceiver status to independently activate the digital subscriber lines in a controlled sequence, so that a proper response is conveyed to the T-interface to preclude premature regarding of the physical transmission channel as being transparent. This is achieved by not setting the downstream activation bit to the network termination to 1 until each upstream digital subscriber line is fully activated in both directions.
REFERENCES:
patent: 3889067 (1975-06-01), Reed et al.
patent: 4122301 (1978-10-01), Kolensky et al.
patent: 4959856 (1990-09-01), Bischoff et al.
patent: 5119376 (1992-06-01), Badaoui et al.
Alcatel Network Systems, Inc.
Safourek Benedict V.
LandOfFree
Method of activating tandem digital subscriber lines does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of activating tandem digital subscriber lines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of activating tandem digital subscriber lines will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-493315