PPP over HDLC

T120

PPP

T120 on H320 MLP

PPP on H320 MLP

PPP on H320 HSD

PPP on H320 LSD

X25 over MLP

X25 over HSD

X25 over LSD

T120 over MLP

HDLC over HSD

PPP over LSD

X25

MLP

LAPD

LAPB

TDM

Audio

Transparent

HDLC

V14E

MeetMe

Audio

Transparent

X.25 Mehrkanal

X.25 im D-Kanal

X.25 im B-Kanal

LAPB

HDLC

V14E