EarthWeb   
HomeAccount InfoSubscribeLoginSearchMy ITknowlegeFAQSitemapContact Us
     

ITKnowledge Insider
      
 Read the current newsletter!     
   

  Search Tips
  Advanced Search
   
  

  

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
    Bookmark It

Search this book:
 
Previous Table of Contents Next


VOICE SAMPLING RATE
Type: Configuration
Format: AT [cmds] #VSR=n [cmds]
Description: Sets the sampling rate used when recording voice signals.
Command Function
#VSR=7200Selects a sampling rate of 7.2KHz.
     #VSR=8000 Selects a sampling rate of 8KHz.
     #VSR=11025 Selects a sampling rate of 11.025KHz in PCM encoding only.

VOICE SILENCE DETECTION
Type: Configuration
Format: AT [cmds] #VSD=n [cmds]
Description: Selects whether the modem will use silence detection to pause recording during periods of silence.
Command Function
#VSD=0Silence detection disabled.
     #VSD=1 Silence detection enabled.

VOICE SILENCE DETECTION TIME
Type: Configuration
Format: AT [cmds] #VSP=n [cmds]
Default: 55
Range: 0 - 255
Unit: .1 second
Description: Sets the minimum amount of silence that the modem will detect.

VOICE SILENCE DETECTION THRESHOLD
Type: Configuration
Format: AT [cmds] #VSS=n [cmds]
Description: Sets the threshold of sensitivity that the modem uses to determine silence detection.
Command Function
#VSS=0 Silence detection disabled.
#VSS=1 Minimum silence detection sensitivity.
#VSS=2 Standard silence detection sensitivity.
#VSS=3 Maximum silence detection sensitivity.

VOICE TIMING MARK
Type: Configuration
Format: AT [cmds] #VTM=n [cmds]
Description: Configures timing mark placement.
Command Function
#VTM=0 Timing marks disabled.
#VTM=1 Timing marks enabled.

VOICE TRANSMISSION LEVEL
Type: Configuration
Format: AT [cmds] #TL=hhhh [cmds]
Default: 3FFF
Range: 0000 - 7FFF
Unit: Unidentified (hexadecimal)
Description: Sets the transmission level for sending audio in voice mode.

VOICE TRANSMIT
Type: Immediate
Format: AT [cmds] #VTX
Description: Commands the modem to begin transmitting voice data.

E-TECH RESEARCH, INC.

PC56RVP

Card Type Modem (asynchronous)
Chipset Unidentified
I/O Options Voice, speakerphone, DVSD, speaker out, microphone in
Maximum Data Rate 56Kbps
Maximum Fax Rate 14.4Kbps
Data Modulation Bell 103A, 212A
ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34
Rockwell K56flex
Fax Modulation ITU-T V.17, V.21CH2, V.27ter, V.29
Error Correction/Compression MNP5, V.42, V.42bis
Fax Class Class I
Data Bus 16-bit ISA
Card Size Full height, half length

CONNECTIONS
Function Label Function Label
Telephone line out CN1 Microphone in CN3
Telephone line in CN2 Speaker out CN4

PLUG-N-PLAY CONFIGURATION
Setting JP1 JP2 JP3
Enabled Pins 2 & 3 closed Pins 2 & 3 closed Pins 2 & 3 closed
Disabled Pins 1 & 2 closed Pins 1 & 2 closed Pins 1 & 2 closed

SERIAL PORT ADDRESS SELECTION
Setting SW1/A SW1/B
3F8h (COM1:) Closed Closed
2F8h (COM2:) Open Closed
3E8h (COM3:) Closed Open
2E8h (COM4:) Open Open

INTERRUPT SELECTION
Setting SW1/C SW1/D SW1/E SW1/F
3 Closed Open Open Open
4 Open Closed Open Open
5 Open Open Closed Open
7 Open Open Open Closed

SUPPORTED STANDARD COMMANDS
Basic AT Commands
+++, ‘comma’, A/
A, B, D, E, H, L, M, N, O, P, Q, T, V, W, X, Y, Z
&C, &D, &F, &G, &K, &P, &R, &S, &T, &V, &W, &Y, &Z
Extended AT Commands
\A, \N
%C, %E, %L, %Q
Special AT Commands
:E, +MS
S-Registers
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


Previous Table of Contents Next

HomeAccount InfoSubscribeLoginSearchMy ITKnowledgeFAQSitemapContact Us
Products |  Contact Us |  About Us |  Privacy  |  Ad Info  |  Home

Use of this site is subject to certain Terms & Conditions, Copyright © 1996-2000 EarthWeb Inc. All rights reserved. Reproduction whole or in part in any form or medium without express written permission of EarthWeb is prohibited. Read EarthWeb's privacy statement.