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Database: 189759 (19 Oct 2025)
YD/T 1021-1999 English PDF
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YD/T 1021-1999
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VB5.2 interface technical specification
Obsolete
YD/T 1021-1999
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Basic data
Standard ID
YD/T 1021-1999 (YD/T1021-1999)
Description (Translated English)
VB5.2 interface technical specification
Sector / Industry
Telecommunication Industry Standard (Recommended)
Classification of Chinese Standard
M14
Word Count Estimation
104,196
Date of Issue
7/13/1999
Date of Implementation
12/1/1999
Adopted Standard
ITU-T G.967.2-1998, NEQ
Summary
This standard specifies the VB5. 2 reference point for the access network (AN) and Service Node (SN) between physical processes and protocol interface requirements, VB5. 2 reference point provides flexible (by assignment) virtual channel chain Road (VPL) and flexible distribution function (by assignment) virtual channel link (VCL) provides distribution function (by Q3 interface control), but also through the broadband bearer connection control (B-BCC) protocol instant controlled by SN VC is assigned. VB5. 2 reference point is a superset of the VB5. 1 reference point increase in the B-BCC function allows VB5 reference point for immediate distribution in the AN VC link.