Filter
Top Products
DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Architecture
Page 1-5Protocols
1
Figure 1-1. Data Transmission States
DCE
ORIGINATING
DCE
DESTINATION SYSTEM
RS232C
RS232CRAW BITSDCP DCP 1
DTE
2 DMIASCII 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 FORMATDCP
DMIASCII 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 ADUDTE
E
I
A
P
O
R
T
E
I
A
P
O
R
T
DTE
DMIASYNCH ASCII ASYNCH ASCII 2
3-7 USER DEFINED
RS232C RS232CADU PROT ADU PROT1 RAW BITS
3-7 USER DEFINED
VOICE GRADE DATAASCII ASCII 2
ANALOG ANALOG1 PCMRS232C 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