Encoding method for t1 line format for ccitt 32k bit per...

Details Encoding method for t1 line format for ccitt 32k bit per... Encoding method for t1 line format for ccitt 32k bit per...

H - Electricity

04

B

354/67

H04B 14/04 (2006.01) H04J 3/12 (2006.01)

Patent

CA 1301932

AN ENCODING METHOD FOR Tl LINE FORMAT FOR CCITT 32K BIT PER SECOND ADPCM AND 64K BITS PER SECOND CLEAR CHANNEL TRANSMISSION ABSTRACT OF THE INVENTION The present method is an encoding scheme for suppressing excessive amount of zeroes transmitted via a Tl line facility. Clear channel transmission capability is provided by this scheme for 32 kb/s or 64 kb/s transmission channels. This scheme provides the proper zero bit suppression for alternating mark inversion signaling (AMI). A proper AMI signal contains no more then 15 consecutive zero bit positions. In addition to meeting the AMI signaling standards, this scheme does not induce any violations of VMR (violation monitor and removal) equipment. Thus, this scheme is transparent to existing line equipment and error monitoring equipment, This scheme provides both a necessary and sufficient method for achieving the AMI signaling requirements during clear channel signaling.

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