UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

close
Already an Engineering360 user? Log in.

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

Customize Your Engineering360 Experience

close
Privacy Policy

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

ITU-T T.71

LINK ACCESS PROTOCOL BALANCED (LAPB) EXTENDED FOR HALF - DUPLEX PHYSICAL LEVEL FACILITY

active, Most Current
Buy Now
Organization: ITU-T
Publication Date: 1 November 1988
Status: active
Page Count: 9
scope:

General

The half-duplex transmission module (HDTM) for extending the use of LAPB for operation of Teletex terminals connected to the PSTN where use of half-duplex 2400 bit/s modems is planned. This is referred to in Recommendation T.70 as LAPX.

Before the HDTM begins operation the physical circuit must be established by the appropriate PSTN call control procedures. The operation of the HDTM is such that the calling DTE will initially have the right to transmit. For the link addressing conventions refer to Recommendation T.70.

Document History

ITU-T T.71
November 1, 1988
LINK ACCESS PROTOCOL BALANCED (LAPB) EXTENDED FOR HALF - DUPLEX PHYSICAL LEVEL FACILITY
General The half-duplex transmission module (HDTM) for extending the use of LAPB for operation of Teletex terminals connected to the PSTN where use of half-duplex 2400 bit/s modems is planned. This...

References

Advertisement