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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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VOICE SAMPLING RATE
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Type:
| Configuration
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Format:
| AT [cmds] #VSR=n [cmds]
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Description:
| Sets the sampling rate used when recording voice signals.
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Command
| Function
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#VSR=7200 | Selects a sampling rate of 7.2KHz.
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#VSR=8000
| Selects a sampling rate of 8KHz.
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#VSR=11025
| Selects a sampling rate of 11.025KHz in PCM encoding only.
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VOICE SILENCE DETECTION
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Type:
| Configuration
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Format:
| AT [cmds] #VSD=n [cmds]
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Description:
| Selects whether the modem will use silence detection to pause recording during periods of silence.
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Command
| Function
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#VSD=0 | Silence detection disabled.
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#VSD=1
| Silence detection enabled.
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VOICE SILENCE DETECTION TIME
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Type:
| Configuration
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Format:
| AT [cmds] #VSP=n [cmds]
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Default:
| 55
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Range:
| 0 - 255
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Unit:
| .1 second
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Description:
| Sets the minimum amount of silence that the modem will detect.
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VOICE SILENCE DETECTION THRESHOLD
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Type:
| Configuration
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Format:
| AT [cmds] #VSS=n [cmds]
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Description:
| Sets the threshold of sensitivity that the modem uses to determine silence detection.
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Command
| Function
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#VSS=0
| Silence detection disabled.
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#VSS=1
| Minimum silence detection sensitivity.
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#VSS=2
| Standard silence detection sensitivity.
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#VSS=3
| Maximum silence detection sensitivity.
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VOICE TIMING MARK
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Type:
| Configuration
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Format:
| AT [cmds] #VTM=n [cmds]
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Description:
| Configures timing mark placement.
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Command
| Function
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#VTM=0
| Timing marks disabled.
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#VTM=1
| Timing marks enabled.
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VOICE TRANSMISSION LEVEL
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Type:
| Configuration
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Format:
| AT [cmds] #TL=hhhh [cmds]
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Default:
| 3FFF
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Range:
| 0000 - 7FFF
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Unit:
| Unidentified (hexadecimal)
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Description:
| Sets the transmission level for sending audio in voice mode.
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VOICE TRANSMIT
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Type:
| Immediate
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Format:
| AT [cmds] #VTX
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Description:
| Commands the modem to begin transmitting voice data.
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E-TECH RESEARCH, INC.
PC56RVP
Card Type
| Modem (asynchronous)
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Chipset
| Unidentified
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I/O Options
| Voice, speakerphone, DVSD, speaker out, microphone in
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Maximum Data Rate
| 56Kbps
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Maximum Fax Rate
| 14.4Kbps
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Data Modulation
| Bell 103A, 212A
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| ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34
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| Rockwell K56flex
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Fax Modulation
| ITU-T V.17, V.21CH2, V.27ter, V.29
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Error Correction/Compression
| MNP5, V.42, V.42bis
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Fax Class
| Class I
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Data Bus
| 16-bit ISA
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Card Size
| Full height, half length
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CONNECTIONS
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Function
| Label
| Function
| Label
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Telephone line out
| CN1
| Microphone in
| CN3
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Telephone line in
| CN2
| Speaker out
| CN4
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PLUG-N-PLAY CONFIGURATION
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Setting
| JP1
| JP2
| JP3
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Enabled
| Pins 2 & 3 closed
| Pins 2 & 3 closed
| Pins 2 & 3 closed
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Disabled
| Pins 1 & 2 closed
| Pins 1 & 2 closed
| Pins 1 & 2 closed
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SERIAL PORT ADDRESS SELECTION
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Setting
| SW1/A
| SW1/B
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3F8h (COM1:)
| Closed
| Closed
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2F8h (COM2:)
| Open
| Closed
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3E8h (COM3:)
| Closed
| Open
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2E8h (COM4:)
| Open
| Open
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INTERRUPT SELECTION
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Setting
| SW1/C
| SW1/D
| SW1/E
| SW1/F
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3
| Closed
| Open
| Open
| Open
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4
| Open
| Closed
| Open
| Open
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5
| Open
| Open
| Closed
| Open
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7
| Open
| Open
| Open
| Closed
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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, D, E, H, L, M, N, O, P, Q, T, V, W, X, Y, Z
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&C, &D, &F, &G, &K, &P, &R, &S, &T, &V, &W, &Y, &Z
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Extended AT Commands
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\A, \N
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%C, %E, %L, %Q
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Special AT Commands
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:E, +MS
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S-Registers
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S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S24, S25, S26, S29, S30, S32, S33, S36, S38, S46, S48, S86, S91, S92, S95
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