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PC144MT II/MC144MT II
PRACTICAL PERIPHERALS, INC.
PC144MT II/MC144MT II
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Modem Type
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Data (synchronous/asynchronous)/Fax
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Maximum Data Rate
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14.4Kbps
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Maximum Fax Rate
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14.4Kbps
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Data Bus
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External
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Fax Class
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Class I & II
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Data Modulation Protocol
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Bell 103A/212A
ITU-T V.21, V.22, V.22bis, V.32, V.32bis
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Fax Modulation Protocol
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ITU-T V.17, V.27ter, V.29
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Error Correction/Compression
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MNP5, V.42, V.42bis
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CONNECTIONS
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Purpose
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Location
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Purpose
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Location
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Line in
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CN1
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RS-232/422
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CN4
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Line out
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CN2
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Power switch
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SW1
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DC Power
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CN3
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DIAGNOSTIC LED(S)
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LED
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Color
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Status
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Condition
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AA
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Red
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On
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Auto-answer enabled
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AA
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Red
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Off
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Auto-answer disabled
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AA
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Red
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Blinking
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Line is ringing
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RX
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Red
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On
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Modem is receiving data
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RX
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Red
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Off
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Modem is not receiving data
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TX
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Red
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On
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Modem is transmitting data
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TX
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Red
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Off
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Modem is not transmitting data
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CD
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Red
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On
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Carrier signal detected
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CD
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Red
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Off
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Carrier signal not detected
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CD
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Red
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Blinking
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Modem is retraining
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OH
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Red
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On
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Modem is off-hook
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OH
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Red
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Off
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Modem is on-hook
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HS
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Red
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On
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Modem connected at 4800bps or faster
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HS
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Red
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Off
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Modem connected at less than 4800bps
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TR
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Red
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On
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DTR signal is high
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TR
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Red
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Off
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DTR signal is low
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MR
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Red
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On
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Power on
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MR
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Red
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Off
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Power off
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Proprietary Command Set
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COMMAND SET DISABLE
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Type:
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Configuration
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Format:
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AT [cmds] %DUMBn [cmds]
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Example:
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AT %DUMB0 &W <CR>
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Description:
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Stops modem from responding to commands.
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Command
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Function
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» %DUMB0
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Command set enabled.
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%DUMB1
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Command set disabled.
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REDIAL
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Type:
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Immediate
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Format:
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AT [cmds] DL
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Example:
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AT M0 DL <CR>
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Description:
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Redials the last number called.
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REPORT INFORMATION
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Type:
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Immediate
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Format:
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AT [cmds] In [cmds]
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Example:
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AT IO <CR>
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Description:
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Commands modem to display information requested.
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Command
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Function
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I0
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Reports modem model and speed.
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I1
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Reports checksum number.
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I2
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Reports checksum result.
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I3
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Reports firmware version.
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I4
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Reports current command settings.
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