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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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LINE SIGNAL LEVEL
Type: Configuration
Format: AT [cmds] %L [cmds]
Example: AT %L &W<CR>
Description: Returns received line signal level.

MAXIMUM BLOCK SIZE FOR TRANSMISSION
Type: Configuration
Format: AT [cmds] \An [cmds]
Example: AT \A1 \A1 %C1<CR>
Description: Sets the maximum transmittable block size.
Command Function
     \A0 MNP block size is 64 characters.
\A1MNP block size is 128 characters.
     \A2 MNP block size is 192 characters.
     \A3 MNP block size is 256 characters.

MNP10 TRANSMISSION LEVEL
Type: Configuration
Format: AT [cmds] -SECn,a [cmds]
Example: AT-SEC1,24<CR>
Default: Unidentified
Range: a=0-30
Unit: -1 dBm
Description: Enables/disables and sets the transmission level for MNP10.
Command Function
n=0 MNP10 disabled.
n=1 MNP10 enabled.

MODULATION SELECTION
Type: Configuration
Format: AT [cmds] +MS=xx,y,zzz,aaa [cmds]
Example: AT +MS11,1,300,28800 &W<CR>
Description: Sets options for active protocol. The transfer rates specified by z and a must be valid for the protocol selected.
Command Function
x=0 V.21
x=1 V.22
x=2 V.22bis
x=3 V.23
x=9 V.32
x=10 V.32bis
x=11 V.34
x=64 Bell 103A
x=69 Bell 212A
x=74 V.FC
y=1 Auto-detect highest speed enabled.
y=0 Automode disabled.
z, a=300 Set minimum or maximum transfer rate at 300bps, respectively.
z, a=1200 Set minimum or maximum transfer rate at 1200bps, respectively.
z, a=2400 Set minimum or maximum transfer rate at 2400bps, respectively.
z, a=4800 Set minimum or maximum transfer rate at 4800bps, respectively.
z, a=7200 Set minimum or maximum transfer rate at 7200bps, respectively.
z, a=9600 Set minimum or maximum transfer rate at 9600bps, respectively.
z, a=12000 Set minimum or maximum transfer rate at 12000bps, respectively.
z, a=14400 Set minimum or maximum transfer rate at 14400bps, respectively.
z, a=16800 Set minimum or maximum transfer rate at 16800bps, respectively.
z, a=19200 Set minimum or maximum transfer rate at 19200bps, respectively.
z, a=21600 Set minimum or maximum transfer rate at 21600bps, respectively.
z, a=24000 Set minimum or maximum transfer rate at 24000bps, respectively.
z, a=26400 Set minimum or maximum transfer rate at 26400bps, respectively.
z, a=28800 Set minimum or maximum transfer rate at 28800bps, respectively.

REPORT INFORMATION
Type: Immediate
Format: AT [cmds] In [cmds]
Example: AT I1 I1 O<CR>
Description: Displays modem properties.
Command Function
I0 Reports product code.
I1 Reports firmware checksum.
I2 Reports firmware checksum result. (Report OK if correct)
I3 Reports firmware revision.
I4 Reports identifier string.
I5 Reports country code.
I6 Reports Data Pump modem and revision.

REPORT SIGNAL QUALITY
Type: Configuration
Format: AT [cmds] %Q [cmds]
Example: AT %Q &W<CR>
Description: Reports signal quality.

SLEEP TIMER
Format AT [cmds] S24=n [cmds]
Example: ATS24=40 <CR>
Default: 0
Range: 0 - 255
Unit: 1 second
Description: Maximum duration of DTE and DCE inactivity allowed prior to initiating low-power sleep mode.

TRANSMISSION LEVEL
Type: Configuration
Format: AT [cmds] @Mn [cmds]
Example: AT @M25 &W<CR>
Default: 0
Range: 11-30
Unit: -1 dBm
Description: Sets the signal level for transmission.
Command Function
@M0-26dBm
     @M1 -30dBm
     @M2-@M10 -10dBm

VOICE SENSING OFF-HOOK
Type: Configuration
Format: AT [cmds] #CEXT=n [cmds]
Example: AT #CEXT=1 &W<CR>
Description: During Voicemail monitoring, user can pick-up phone on any extension phone, other than the one hooked-up to the modem.
Command Function
     #CEXT=0 Sensing disabled.
#CEXT=1Sensing enabled.
     #CEXT? Displays current value.
     #CEXT=? Displays valid range.


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