AT&T PARADYNE
COMSPHERE 3820
|
Modem Type |
Data (synchronous/asynchronous)/Fax |
|
Maximum Data Rate |
19.2Kbps |
|
Maximum Fax Rate |
14.4Kbps |
|
Data Bus |
External |
|
Fax Class |
Class I & II |
|
Data Modulation Protocol |
AT&T V.32terbo Bell 103A/212A ITU-T V.21, V.22, V.22bis, V.32, V.32bis |
|
Fax Modulation Protocol |
ITU-T V.17, V27ter, V.29 (optional) |
|
Error Correction/Compression |
MNP5, V.42, V.42bis |
|
CONNECTIONS | ||||
|
Purpose |
Location |
Purpose |
Location | |
|
Line out |
CN1 |
Scroll left on LCD |
CN6 | |
|
Line in |
CN2 |
Scroll right on LCD |
CN7 | |
|
RS-232/422 |
CN3 |
Up one level on LCD |
CN8 | |
|
DC power |
CN4 |
Go to top level on LCD |
CN9 | |
|
Network Management System |
CN5 |
Power switch |
SW1 | |
|
DIAGNOSTIC LED(S) | |||
|
LED |
Color |
Status |
Condition |
|
RTS/105 |
Green |
On |
RTS signal is high |
|
RTS/105 |
Green |
Off |
RTS signal is low |
|
CTS/106 |
Green |
On |
CTS signal is high |
|
CTS/106 |
Green |
Off |
CTS signal is low |
|
TXD/103 |
Green |
On |
Modem is transmitting data |
|
TXD/103 |
Green |
Off |
Modem is not transmitting data |
|
LSD/109 |
Green |
On |
Carrier signal detected |
|
LSD/109 |
Green |
Off |
Carrier signal not detected |
|
RXD/104 |
Green |
On |
Modem is receiving data |
|
RXD/104 |
Green |
Off |
Modem is not receiving data |
|
SQ |
Yellow |
On |
Incoming signal is degraded |
|
SQ |
Yellow |
Off |
Normal operation |
Proprietary AT Command Set
See document V1461 for a full command summary.