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This Recommendation describes in general terms the link access procedure on the D-channel, LAPD. Details are provided in ITU-T Q.921 [1]. The purpose of LAPD is to convey information between layer 3 entities across the ISDN user-network interface using the D-channel. This Recommendation has been amended in order to add a new Annex A to describe in general terms the link access procedure for use in a symmetrical application between two Private Integrated Network eXchanges (PINXs) at the Q reference point.
| Author | ITU |
|---|---|
| Editor | ITU |
| Document type | Standard |
| Format | File |
| ICS | 33.080 : Integrated Services Digital Network (ISDN)
|
| Number of pages | 9 |
| Modify | ITU-T Q.920 (1993-03)
|
| Year | 2000 |
| Document history | |
| Country | International |
| Keyword | CCITT Q.920;CCITT Q.920 AMD 1;ITU-T Q.920;ITU-T 920;920;ITU-T Q.920 (1993) AMD 1 |