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CAN/CSA-T542-90 (R2000)
Integrated Services Digital Network (ISDN) - Data-Link Layer Signalling Specification for Application at the User-Network Interface (Adopted ANSI T1.602-1989)
SKU: 2412862
Published by CSA Group
Publication Year 1990
Reaffirmed in 2000
187 pages
Withdrawn
Product Details
Scope
This standard contains the complete text of ccm Recommendation Q.920,
ISDN User-Network Interface Data-Link Layer - General Aspects, and eeIIT
Recommendation Q.921 , ISDN User-Network Interface - Data-Link Layer
Specification, as they will appear in the upcoming 1989 eem Blue Book.!
This standard specifies the Link Access Procedure on the D-channel,
LAPD. The pwpose ofLAPD is to convey information between layer-3
entities across the ISDN user-network interface using the D-channel.
LAPD is a protocol operating at the data-link layer of the 051
architecture. This standard specifies the use of LAPD on a duplex, bit-
transparent D-channel on an ISDN interface. The frame structure,
elements of procedure, format of fields, and procedures for the proper
operation of LAPD are specified.
This standard contains the complete text of ccm Recommendation Q.920,
ISDN User-Network Interface Data-Link Layer - General Aspects, and eeIIT
Recommendation Q.921 , ISDN User-Network Interface - Data-Link Layer
Specification, as they will appear in the upcoming 1989 eem Blue Book.!
This standard specifies the Link Access Procedure on the D-channel,
LAPD. The pwpose ofLAPD is to convey information between layer-3
entities across the ISDN user-network interface using the D-channel.
LAPD is a protocol operating at the data-link layer of the 051
architecture. This standard specifies the use of LAPD on a duplex, bit-
transparent D-channel on an ISDN interface. The frame structure,
elements of procedure, format of fields, and procedures for the proper
operation of LAPD are specified.
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