Name: Lucent Technologies DDM-2000 OC-12
Brand: Lucent Technologies
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363-206-208

Glossary

Issue 5 June 2000 GL-21

VT1.5

A 1.728 Mb/s virtual tributary

VT-G

Virtual Tributary Group — A 9-row by 12-column SONET structure (108 bytes) that car-

ries one or more VTs of the same size. Seven VT groups (756 bytes) are byte-inter-

leaved within the VT-organized STS-1 synchronous payload envelope.

Zero Code Suppression

A technique used to reduce the number of consecutive zeros in a line codes signal

(B3ZS for DS3 signals and B8ZS for DS1 signals).

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