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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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DATA PARITY
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Type:
| Register
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Format:
| AT [cmds] S14=n [cmds]
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Description:
| Selects what type of parity bit will be transmitted.
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Command
| Function
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S14=0 | No parity.
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S14=1
| Even parity.
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S14=2
| Odd parity.
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DATA STOP
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Type:
| Configuration
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Format:
| AT [cmds] S13=n [cmds]
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Description:
| Selects how many stop bits will be transmitted.
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Command
| Function
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S13=0 | 1 stop bit.
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S13=1
| 1.5 stop bits.
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S13=2
| 2 stop bits.
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DIAL MODE - ASYNCHRONOUS
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Type:
| Register
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Format:
| AT [cmds] S15=n [cmds]
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Description:
| Selects how the CSU/DSU will perform dialing in asynchronous mode.
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Command
| Function
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S15=0
| Asynchronous dialing disabled.
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S15=1
| Dial number in memory location 0 on DTR going high.
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S15=2 | AT dialing enabled.
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S15=3
| Dial number in memory location 0 on DTR going high and AT dialing enabled.
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DIAL MODE - SYNCHRONOUS
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Type:
| Register
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Format:
| AT [cmds] S2=n [cmds]
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Description:
| Selects how the CSU/DSU will perform dialing in synchronous mode.
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Command
| Function
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S2=0
| Synchronous dialing disabled.
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S2=1
| Dial number in memory location 0 on DTR going high.
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S2=2 | V.25bis dialing enabled.
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S2=3
| Dial number in memory location 0 on DTR going high and V.25bis dialing enabled.
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DSR SIGNAL
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Type:
| Register
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Format:
| AT [cmds] S9=n [cmds]
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Description:
| Controls the behaviour of the DSR signal.
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Command
| Function
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S9=0 | DSR forced high.
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S9=1
| DSR low when off-line or in test mode.
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ECHO CANCELLER
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Type:
| Register
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Format:
| AT [cmds] S7=n [cmds]
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Description:
| Controls the echo canceller tone.
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Command
| Function
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S7=0 | Echo canceller tone disabled.
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S7=1
| Echo canceller tone enabled.
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HELP
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Type:
| Immediate
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Format:
| AT [cmds] $ [cmds]
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Description:
| Displays the help screens.
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INACTIVITY TIMER
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Type:
| Register
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Format:
| AT [cmds] S3=n [cmds]
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Description:
| Selects how long the line must be inactive for the CSU/DSU to disconnect.
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Command
| Function
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S3=0 | Disconnect on low DTR only.
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S3=1
| Set inactivity timer to 10 minutes.
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S3=2
| Set inactivity timer to 30 minutes.
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S3=3
| Set inactivity timer to 60 minutes.
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S3=4
| Set inactivity timer to 10 minutes and disconnect on low DTR.
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S3=5
| Set inactivity timer to 30 minutes and disconnect on low DTR.
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S3=6
| Set inactivity timer to 60 minutes and disconnect on low DTR.
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S3=7
| Do not disconnect on inactivity or low DTR.
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REDIAL
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Type:
| Register
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Format:
| AT [cmds] S1=n [cmds]
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Default:
| 0
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Range:
| 0 - 99
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Unit:
| 1 redial
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Description:
| Sets how many times the CSU/DSU will attempt to redial a failed call.
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REMOTE CONFIGURATION REQUEST
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Type:
| Register
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Format:
| AT [cmds] S19=n [cmds]
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Description:
| Controls requests for remote configuration.
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Command
| Function
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S19=0 | Remote configuration requests denied.
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S19=1
| Remote configuration requests granted.
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RESET
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Type:
| Immediate
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Format:
| AT [cmds] *Rn [cmds]
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Description:
| Resets the CSU/DSU to power-up status.
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RTS SIGNAL
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Type:
| Register
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Format:
| AT [cmds] S8=n [cmds]
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Description:
| Controls the behaviour of the RTS signal.
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Command
| Function
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S8=0 | RTS forced high.
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S8=1
| RTS follow CTS.
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