COMSPHERE 392xPlus Modems
3-4
November 1996
3920-A2-GN31-30
TXD
RXD
RTS
CTS
DSR
DTR
LSD
Pwr
Alrm
Test
Dial
RI
Busy
Serv
SQ
Status
Front Panel
Spkr
142
125
103
104
105
106
107
108
109
1
3
2
4
Port
3921
Plus
OK
Alrm
In
Out
Status
Diag
Diag
SDU
TXD
RXD
RTS
CTS
DSR
DTR
LSD
Pwr
Alrm
Test
Dial
RI
Busy
Serv
SQ
Status
Front Panel
Spkr
142
125
103
104
105
106
107
108
109
3921
Plus
SINGLEPORT
MULTIPORT
Select
SDU
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
COMSPHERE 3000
SELECT
KEY
STATUS
INDICATORS
CARRIER SLOTS 1–16
F1
F2
F3
OK
Alarm BckUp Test
EC
NETWORK
DEVICE
ALARM
DIAL
BACKUP
TEST
MODE
ERROR
CORRECTION
OK
Alarm BckUp Test
EC
KEYPAD
LCD
496-14676-01
Figure 3-2. Optional SDCP and Model 3921
Plus Faceplates