ppt-hdlc-derived-protocol-1-2002_Comp.ppt

HDLC

1. HDLC Derived Protocol
Onno W. Purbo
[email protected]

2. Reference

Ben Dewey, HDLC Derived Protocols,
www.sbei.com, 2001

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

Data Link Connection Identifier (DLCI)

SAPI

Signaling

Packet Data

Manajemen

15. Contoh LAPD ..

ITU-T Q.921

ITU-T Q.922

ITU-T Q.932

ANSI T1.601

ANSI T1.602