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ZCS Glossary
Administration for Network Connectivity
CID: 77730 555-233-504 — Issue 1 — April 2000
490
Z ZCS
See Zero Code Suppression (ZCS).
Zero Code Suppression (ZCS)
ZCS line coding substitutes a 1 for the second least-significant bit of every
all-zero byte in AMI-encoded data (see line coding). ZCS encoding has no
effect on voice communications, but
it corrupts digital data (see restricted
facilities). In MMCX communications, ZCS corrupts the ISDN D-channel.