COMSPHERE 3821Plus Modem
1-2
January 1999
3821-A2-GB20-40
•
Storage of up to 10 telephone numbers to directory
locations.
•
Originate Security and three Answer Security
modes.
•
Callback Security with telephone directory index or
telephone number.
•
Two factory-defined configurations and two
user-defined configuration areas.
Status Indicators
The status indicators on a 3821Plus circuit card
continuously provide information on the modem’s
operating condition. The status indicators for the
3821Plus card are located on its faceplate, the SDCP, and
the Shared Diagnostic Unit (SDU) faceplate (
Figure 1-1
).
The 3821Plus card has 13 Light Emitting Diodes
(LEDs). These LEDs are listed and described in
Table 1-1
.
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
496-14802-01
OK
Alrm
In
Out
Status
SDU
Diag
Diag
3821
Plus
TXD
RXD
CD
RI
DTR
OH
Mod
Mod
Mod
Status
Front Panel
A
B
C
Alrm
Alrm
Alrm
A
B
C
Figure 1-1. Optional SDCP, 3821
Plus Faceplate, and Optional SDU
Summary of Contents for COMSPHERE 3821PLUS
Page 1: ...COMSPHERE 3821PLUS MODEM USER S GUIDE Document No 3821 A2 GB20 40 January 1999 ...
Page 4: ...COMSPHERE 3821Plus Modem C January 1999 3821 A2 GB20 40 Notices ...
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