1. Onno W. Purbo Onno@indo.net.id
HDLC Derived Protocol
Onno W. Purbo

2. Reference
Ben Dewey, HDLC Derived Protocols,

3. Data Link Layer

5. Basic HDLC Frame

6. Contoh .. LAPB – Link Access Protocol (Balanced); X.25, AX25.
LAPD – Link Access Protocol (D Channel); ISDN D Channel & telco signaling
MTP-2 – Data Link Signaling Layer of SS7.
PPP – Point to Point Protocol.

7. Address & Control Field

9. LAPB Frame

11. LAPD Frame

13. Beberapa Field SAPI – Service Access Point Identifier.
TEI – Terminal Endpoint Identifier.
Command/Responds bit.
2 Address Field Extender (EA)

14. DLCI SAPI + TEI SAPI Data Link Connection Identifier (DLCI) Signaling
Packet Data
Manajemen

15. Contoh LAPD .. ITU-T Q.921 ITU-T Q.922 ITU-T Q.932 ANSI T1.601