ISDN basic rate interface central office station terminal emulat

Details ISDN basic rate interface central office station terminal emulat ISDN basic rate interface central office station terminal emulat

1994-06-03

1996-07-09

Safourek, Benedict V.

Multiplex communications

Wide area network

Packet switching

3701101, H04J 312

Patent

active

055351980

ABSTRACT:
Full channel service is obtained over a modified ISDN BRI interface by emulating at least one central office (CO) station terminal which provides access to a voice channel over a single DSL for user station terminals whether or not they are ISDN BRI compatible. To this end, an interface is provided for the DSL that emulates an ISDN BRI CO station terminal and acts like a facility to station terminals. More specifically, a plurality of CO station terminals are emulated on a single multi-point passive bus terminating the single DSL. Each of the emulated CO station terminals presents to the CO switching office the appearance of being a CO station terminal. The emulated CO station terminals are configured such that CO features are accessible. Information from the emulated CO station terminals is mapped into existing system structures where such structures are available and compatible with the information from the emulated terminal. New structures have been created so that CO supplementary services can be invoked by the emulated CO station terminals.

REFERENCES:
patent: 5134611 (1992-07-01), Steinker et al.
patent: 5204860 (1993-04-01), Sparks
patent: 5291549 (1994-03-01), Izumi
ITU-TI.411 Standard, dated Mar. 1993, entitled "ISDN User-Network Interfaces-Reference Configurations".
American National Standard for Telecommunications (ANSI) T1.601-1992 entitled "Integrated Services Digital Network (ISDN) Base Access Interface for Use on Metallic Loops for Application on the Network Side of the NT (Layer 1 Specification)" approved Feb. 21, 1992 by ANSI, Inc.
Q.932 Protocol COM XI-R 239-E, Study Group XI-Report R 239 dated Jun., 1992, entitled "Generic Procedures for the Control of ISDN Supplementary Services".
I.430 COM XVIII-R 119-E (Study Group XVIII-Report R 119) dated Jul., 1992, entitled "Recommendations of the I.430-Series Submitted for Approval at the Xth CCITT Plenar Assembly".
Revised Recommendation Q.921 COM XI-R 205-E (Study Group XI-Report R 205) dated Jun. 1992 entitled "ISDN User-Network Interface-Data Link Layer Specification".
Study Group XI-Report R 238-E May 1992, Recommendation Q.931 entitled "ISDN User-Network Interface Layer 3 Specification for Basic Call Control".

Affiliated with

Also associated with

Rating

ISDN basic rate interface central office station terminal emulat does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with ISDN basic rate interface central office station terminal emulat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and ISDN basic rate interface central office station terminal emulat will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1873879