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Micro House PC Hardware Library Volume II: Network Interface Cards And Modems Micro House PC Hardware Library Volume II: Network Interface Cards And Modems
by Micro House International, Inc. and Scott Mueller
Que, Macmillan Computer Publishing
ISBN: 078971664x   Pub Date: 06/17/98
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ADTRAN

DSU III S4W

Card Type CSU/DSU
Chip Set Unidentified
Transfer Rate 56Kbps
Data Bus External

CONNECTIONS
Function Label Function Label
ENTER button B1 3 and C button B13
UP button B2 6 and F button B14
DOWN button B3 9 button B15
CANCEL button B4 # and QUICK button B16
1 and A button B5 RS-366 port for dialing CN1
4 and D button B6 RS-232/422 port CN2
7 button B7 V.35 port CN3
* and SHIFT button B8 Line out CN4
2 and B button B9 120V AC power CN5
5 and E button B10 Fuse, 1/2A @ 250V R1
8 button B11 Power switch SW1
0 button B12    

DIAGNOSTIC LED(S)
LED Color Status Condition
RS Green On RTS signal is high
RS Green Off RTS signal is low
CS Green On CTS signal is high
CS Green Off CTS signal is low
TD Green On DSU is transmitting data
TD Green Off DSU is not transmitting data
RD Green On DSU is receiving data
RD Green Off DSU is not receiving data
CD Green On Carrier signal detected
CD Green Off Carrier signal not detected
ALM Red On Alarm condition has occurred on CSU
ALM Red Off Alarm condition has not occurred on CSU
TST Yellow On CSU is in test mode
TST Yellow Off CSU is not in test mode

Proprietary AT Command Set

ANTI-STREAMING
Type: Configuration
Format: AT [cmds] %Tn [cmds]
Description: Selects the anti-streaming function.
Command Function
%T0 Anti-streaming disabled.
%T1 Anti-streaming enabled.

AUTO-ANSWER
Type: Configuration
Format: AT [cmds] _Jn [cmds]
Description: Selects whether the DSU will automatically answer incoming calls.
Command Function
_J0 Auto-answer disabled.
_J1 Auto-answer enabled.

CD SIGNAL
Type: Configuration
Format: AT [cmds] &Cn [cmds]
Description: Controls the behaviour of the Carrier Detect signal.
Command Function
&C0 CD forced high.
&C1 CD normal.
&C2 CD forced high except at disconnect.

CLOCK SOURCE
Type: Configuration
Format: AT [cmds] &Xn [cmds]
Description: Sets where the DSU will derive the clock source.
Command Function
&X0 Internal transmit clock used.
&X1 External ETC clock used.

CTS SIGNAL
Type: Configuration
Format: AT [cmds] &Rn [cmds]
Description: Controls the behaviour of the Clear to Send signal.
Command Function
&R0 CTS forced high.
&R1 CTS follows RTS.
&R2 CTS follows CD.
&R3 CTS and RTS follow CD.
&R4 CTS forced high except at disconnect.

CTS DELAY
Type: Configuration
Format: AT [cmds] _Dn [cmds]
Description: Sets the delay from an RTS change to a CTS change.
Command Function
_D0 Short delay set.
_D1 Long delay set.

DIAL BACKUP
Type: Configuration
Format: AT [cmds] _En [cmds]
Description: Selects which stored number the Dial Backup function will dial.


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