Method and apparatus for interoperability between voice...

Details Method and apparatus for interoperability between voice... Method and apparatus for interoperability between voice...

2006-06-13

2006-06-13

Vu, Huy D. (Department: 2665)

Multiplex communications

Communication techniques for information carried in plural...

Adaptive

C370S474000

Reexamination Certificate

active

07061934

ABSTRACT:
The disclosed embodiments provide a method and apparatus for interoperability between CTX and DTX communications systems during transmissions of silence or background noise [FIG.2]. Continuous eighth rate encoded noise frames are translated to discontinuous SID frames for transmission to DTX systems (402–410). Discontinuous SID frames are translated to continuous eighth rate encoded noise frames for decoding by a CTX system (602–606). Applications of CTX to DTX interoperability comprise CDMA and GSM interoperability (narrowband voice transmission systems), CDMA next generation vocoder (The Selectable Mode Vocoder) interoperability with the new ITU-T 4 kbps vocoder operating in DTX-mode for Voice Over IP applications, future voice transmission systems that have a common speech encoder/decoder but operate in differing CTX or DTX modes during speech non-activity, and CDMA wideband voice transmission system interoperability with other wideband voice transmission systems with common wideband vocoders but with different modes of operation (DTX or CTX) during voice non-activity.

REFERENCES:
patent: 5868662 (1999-02-01), Borodulin et al.
patent: 6182035 (2001-01-01), Mekuria
patent: 6269331 (2001-07-01), Alanara et al.
patent: 6347081 (2002-02-01), Bruhn

Affiliated with

Also associated with

Rating

Method and apparatus for interoperability between voice... 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 and apparatus for interoperability between voice..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for interoperability between voice... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3690383