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Analog

ATDM

ATM

BRI

CELL
CIR

CIRCUIT
SWITCHIN
G

CORE
ROUTER

CPE

CRC

CSU
DATA
CHANNEL

DCE

DEDICATE
D LINES

DEMARCATI
ON

DIAL-UP
DLCI

DLCI

DSL ?
DSO

DSU
DTE

FRAME
RELAY

HDLC

ISDN

JITTER
LAN

LAN
SWITCH
(frame
switch)

LATENCY

LCP

LEASED
LINE
LMI

LOCAL
LOOP

MODEM

MULTI-
-PLEXAGE
STATISTIQ
UE

NCP
NULL
MODEM
PACKET
SWITCH

PACKET
SWITCHIN
G

PBX

PRI

PSTN

PVC
SDLC

SERVEUR
D'ACCES

SERVEUR
DE
COMMUNI-
-CATION

SNA

SONET

SPID
TDM

TUNNEL

UART

UNI

WAN

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