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DESKPORTE 28.8P
MICROCOM, INC.
DESKPORTE 28.8P
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Card Type
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Modem (synchronous/asynchronous)
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Processor
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Z80182
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Processor Speed
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18.4MHz
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Chipset
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Microcom
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Maximum Onboard Memory
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32KB SRAM/128KB Flash ROM
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Maximum Data Rate
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28.8Kbps
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Maximum Fax Rate
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14.4Kbps
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Data Bus
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Serial, parallel
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Fax Class
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Class I & II
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Data Modulation
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Bell 103A/212A
ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34
Rockwell V.FC
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Fax Modulation
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Unidentified
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Error Correction/Compression
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MNP5, MNP10, V.42, V.42bis
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CONNECTIONS
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Function
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Label
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Function
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Label
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Line out
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CN1
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RS-232/422 port
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CN4
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Line in
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CN2
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DC power
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CN5
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Parallel port
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CN3
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Power switch
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SW1
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DIAGNOSTIC LED(S) (POWER-UP)
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AA
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TM
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HS
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Condition
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Off
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On
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Off
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RAM test failed
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Off
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On
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Off
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Modem failed
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On
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On
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On
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CPU test failed
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Off
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Off
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Off
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All tests passed
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DIAGNOSTIC LED(S) (NORMAL OPERATION)
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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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Unidentified
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On
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Auto-answer enabled
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AA
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Unidentified
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Off
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Auto-answer disabled
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AA
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Unidentified
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Blinking
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Phone is ringing
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RD
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Unidentified
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Blinking
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Modem is receiving data
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RD
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Unidentified
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Off
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Modem is not receiving data
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SD
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Unidentified
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Blinking
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Modem is transmitting data
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SD
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Unidentified
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Off
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Modem is not transmitting data
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CD
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Unidentified
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On
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Carrier signal detected
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CD
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Unidentified
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Off
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Carrier signal not detected
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OH
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Unidentified
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On
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Modem is off-hook
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OH
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Unidentified
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Off
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Modem is on-hook
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TR
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Unidentified
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On
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DTR signal is high
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TR
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Unidentified
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Off
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DTR signal is low
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TM
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Unidentified
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On
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Modem is performing self-test
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TM
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Unidentified
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2s blink
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RAM test failed
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TM
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Unidentified
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1s blink
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ROM test failed
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TM
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Unidentified
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2/3s blink
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Data pump test failed
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TM
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Unidentified
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Off
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Self-tests passed
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HS
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Unidentified
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On
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Modem is not connected or is connected at between 4800bps and 12Kbps
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HS
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Unidentified
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Blinking
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Modem is connected at 14.4Kbps or faster
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HS
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Unidentified
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Off
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Modem is connected at less than 4800bps
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SUPPORTED STANDARD COMMANDS
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Basic AT Commands
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+++, ‘comma’, A/
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A, B, E, H, I, L, M, O, P, Q, T, V, W, X, Y, Z
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&D, &F, &G, &M, &P, &T, &W, &X, &Y, &Z
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Extended AT Commands
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\A, \B, \C, \E, \J, \N, \Q, \T
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%A, %C, %E, %F, %G
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Special AT Commands
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-J, *H, )M, @M, :E
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S-Registers
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S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S12, S14, S16, S18, S22, S23, S25, S26, S27
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Note: See MHI documentation for complete information.
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Proprietary AT Command Set
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DISPLAY BLACKLIST NUMBERS
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Type:
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Immediate
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Format:
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AT [cmds] *N [cmds]
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Description:
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Displays the list of all the numbers on the blacklist (whether they are delayed/forbidden or not), and their statuses.
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DISPLAY DELAYED NUMBERS
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Type:
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Immediate
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Format:
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AT [cmds] *D [cmds]
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Description:
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Displays the list of all delayed numbers and their statuses.
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DISPLAY FORBIDDEN NUMBERS
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Type:
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Immediate
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Format:
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AT [cmds] *F [cmds]
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Description:
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Displays the list of all forbidden numbers and their statuses.
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CONNECT SPEED MATCHING
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Type:
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Configuration
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Format:
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AT [cmds] %Ln [cmds]
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Description:
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Selects whether the modem will attempt to match the connect speed of the remote modem.
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Command
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Function
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%L0
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Modem will connect at speeds supported by the protocol selected only.
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í %L1
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Modem will match connect speeds.
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%L2
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Modem will connect only at current speed.
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%L3
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Modem will use V.8 automode with fallback to ITU-T automode to match speeds.
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%L4
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Modem will use V.8 automode to match speeds.
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V.34 TRAINING RESPONSE
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Type:
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Register
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Format:
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AT [cmds] :T42=n [cmds]
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Description:
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Sets what speed the modem will choose after a V.34 train.
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Command
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Function
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í :T42=0
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Standard speed selection.
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:T42=1
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Choose speed approximately 2 speeds faster than standard.
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:T42=2
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Choose speed approximately 1 speed faster than standard.
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:T42=3
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Standard speed selection.
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:T42=4
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Choose speed approximately 1 speed slower than standard.
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:T42=5
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Choose speed approximately 2 speeds slower than standard.
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See MICROCOM, INC. DESKPORTE FAST for a full command summary.
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