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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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USER CONFIGURABLE SETTINGS
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Setting
| Label
| Position
|
CSU/DSU will operate in synchronous mode | SW1/5
| On
|
CSU/DSU will operate in asynchronous mode
| SW1/5
| Off
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RTS signal forced high | SW1/6
| On
|
RTS signal normal
| SW1/6
| Off
|
DSR signal forced high | SW1/7
| On
|
DSR signal normal
| SW1/7
| Off
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Local loopback test disabled | SW1/8
| On
|
Local loopback test enabled
| SW1/8
| Off
|
Digital loopback test disabled | SW1/9
| On
|
Digital loopback test enabled
| SW1/9
| Off
|
Remote loopback test disabled | SW1/10
| On
|
Remote loopback test enabled
| SW1/10
| Off
|
Test pattern disabled | SW1/11
| On
|
Test pattern enabled
| SW1/11
| Off
|
Elastic store disabled | SW1/12
| On
|
Elastic store enabled
| SW1/12
| Off
|
4-wire line is connected | SW2/1
| On
|
2-wire line is connected
| SW2/1
| Off
|
Leased line is connected | SW2/2
| On
|
Switched line is connected
| SW2/2
| Off
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DTR signal forced high | SW2/3
| On
|
DTR signal normal
| SW2/3
| Off
|
Factory configured - do not alter | SW2/4
| N/A
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LINE SPEED
|
Synchronous Mode
| Asynchronous Mode
| SW1/1
| SW1/2
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9600bps
| 9600bps
| On
| On
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19.2Kbps
| 19.2Kbps
| Off
| On
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56Kbps | 38.4Kbps
| On
| Off
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64Kbps
| 57.6Kbps
| Off
| Off
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CLOCK SOURCE
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Setting
| SW1/3
| SW1/4
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Remote | On
| On
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Internal
| Off
| Off
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External
| Off
| On
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DIAGNOSTIC LED(S)
|
LED
| Color
| Status
| Condition
|
SD
| Red
| On
| CSU/DSU is transmitting data
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SD
| Red
| Off
| CSU/DSU is not transmitting data
|
RD
| Red
| On
| CSU/DSU is receiving data
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RD
| Red
| Off
| CSU/DSU is not receiving data
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CD
| Red
| On
| Carrier signal detected
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CD
| Red
| Off
| Carrier signal not detected
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CTS
| Red
| On
| CTS signal is high
|
CTS
| Red
| Off
| CTS signal is low
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RTS
| Red
| On
| RTS signal is high
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RTS
| Red
| Off
| RTS signal is low
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OL
| Red
| On
| Network signal detected
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OL
| Red
| Off
| Network signal not detected
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TM
| Red
| On
| CSU/DSU is in test mode
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TM
| Red
| Off
| CSU/DSU is not in test mode
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TM
| Red
| Blinking
| Error detected in test pattern
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Proprietary AT Command Set
AUTO-ANSWER
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Type:
| Register
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Format:
| AT [cmds] S0=n [cmds]
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Description:
| Controls when the CSU/DSU will automatically answer an incoming call.
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Command
| Function
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S0=0
| Auto-answer disabled.
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S0=1
| CSU/DSU will always answer incoming calls.
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S0=2 | CSU/DSU will answer incoming calls when DTR signal is high.
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DATA LENGTH
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Type:
| Register
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Format:
| AT [cmds] S12=n [cmds]
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Description:
| Selects how many data bits will be transmitted.
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Command
| Function
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S12=0 | 8 data bits.
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S12=1
| 7 data bits.
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