Avaya Definity SI, Maintenance Manual, Page: 46 / 2968

Maintenance Architecture
555-233-123 1-10 Issue 4 May 2002
Figure 1-1. Data Transmission States
DCE
ORIGINATING
DCE
DESTINATION SYSTEM
RS232C RS232C RAW BITS DCP DCP 1
DTE
2 DMI ASCII ASCII
3-7 USER DEFINED
D
I
G
I
T
A
L
P
O
R
T
D
I
G
I
T
A
L
P
O
R
T
D
I
G
I
T
A
L
P
O
R
T
D
I
G
I
T
A
L
P
O
R
T
DATA
MODULE
DATA
MODULE
DATA
MODULE
DATA
MODULE
DTE
DTE
DATA
MODULE
DS1
PORT
1
D
I
G
I
T
A
L
P
O
R
T
RAW BITS RS232C DS1 FORMAT DCP
DMI ASCII 2
P
O
R
T
D
S
1
DTE
T
R
U
N
K
P
O
R
T
A
N
A
L
O
G
ADU ADU DTE
E
I
A
P
O
R
T
E
I
A
P
O
R
T
DTE
DMI ASYNCH ASCII ASYNCH ASCII 2
3-7 USER DEFINED
RS232C RS232C ADU PROT ADU PROT 1 RAW BITS
3-7 USER DEFINED
VOICE GRADE DATA ASCII ASCII 2
ANALOG ANALOG 1 PCM RS232C RS232C
P
O
R
T
A
N
A
L
O
G
L
I
N
E
A
N
A
L
O
G
P
O
R
T
DTE
DTE
MODEM
POOLING
CABLE
MODEM
MODEM
MODEM
PCM
3-7 USER DEFINED