Multitech MT9234ZBAUSBCDC Podręcznik Użytkownika Strona 10
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Chapter 1 – AT Commands, S-Registers, and Result Codes
Multi-Tech Systems, Inc. AT Commands for the MultiModem & SocketModem MT9234 Series (S000434H) 10
I Request ID Information
Description: Use this command to display product information about the modem. In each case the
information is transmitted to the host system followed by a final result code.
Syntax: ATI<value>
Values: 0, 3 Returns the modem identity string and driver version number.
1 Calculates a ROM checksum and displays it on the DTE (e.g., 12AB).
2 Performs a ROM check, calculates the checksum, and then verifies the
checksum by displaying OK or ERROR.
4 Returns firmware version for the data pump (e.g., 94).
5 Returns the code version, board ID, and country/region ID in hexadecimal.
9 Returns the country/regional code in English.
11 Displays connection information as described below.
Default: 0
Result Codes: The ATI11 results are listed on two screens. To get to the second screen, press any
key or ESC to Exit. The following is an example of the ATI11 results.
Description Status
Last Connection V.92
Initial Transmit Carrier Rate 28800
Initial Receive Carrier Rate 50666
Final Transmit Carrier Rate 28800
Final Receive Carrier Rate 50666
Protocol Negotiation Result LAPM
Data Compression Result V44
Estimated Noise Level 46
Receive Signal Power Level (-dBm) 18
Transmit Signal Power Level (-dBm) 12
Round Trip Delay (msec) 10
Description Status
Near Echo Level (-dBm) NA
Far Echo Level (-dBm) NA
Transmit Frame Count 0
Transmit Frame Error Count 0
Receive Frame Count 1
Receive Frame Error Count 0
Retrain by Local Modem 0
Retrain by Remote Modem 0
Rate Renegotiation by Local Modem 0
Rate Renegotiation by Remote Modem 0
Call Termination Cause 0
Robbed-Bit Signaling 10
Digital Loss (dB) 6
Remote Server ID NA
Last PCM S PTR EBB3
Connection Time (msec) 19646
The ATI11 command may be issued from on-line command mode or after the end of
a call. After a call, some of the values are no longer valid.
M Monitor Speaker Mode
Description: Turns the speaker on and off.
Syntax: ATM<value>
Values: 0 Speaker always off.
1 Speaker on until carrier signal detected.
2 Speaker always on when modem is off-hook.
3 Speaker on until carrier is detected, except while dialing.
Default: 1
Result Codes: OK if <value> = 0 to 3
ERROR if <value> ≠ 0 to 3.
- Contents 3
- Chapter 1 – AT Commands, S 6
- Registers, and Result Codes 6
- Data and General Commands 7
- E Echo Command 9
- H Hook Control 9
- I Request ID Information 10
- M Monitor Speaker Mode 10
- N Modulation Handshake 11
- Sr S-Register Control 12
- T Select Tone Dialing 12
- V Result Code Format 12
- W Result Code Options 12
- &S Data Set Ready (DSR) 16
- &T Self-Test Commands 16
- \B Transmit Break 18
- \K Break Control 18
- \T Inactivity Timer 19
- \V Protocol Result Code 19
- \X XON/XOFF Pass-Through 20
- -C Data Calling Tone 20
- %C Data Compression Control 21
- %DC AT Command Control 21
- %S Command Speed Response 22
- +DS44 V.44 Data Compression 25
- +ER Error Control Report 26
- +ES Error Control Selection 27
- +GMR Revision Request 29
- +IPR Fixed DTE Rate 29
- +MS Modulation Selection 30
- $D DTR Dialing 32
- $FC Quick Connect 32
- $LB Long Break 32
- $MB Online BPS Speed 33
- $SB Serial Port Baud Rate 33
- +VDR Distinctive Ring Report 34
- #P Set 11-bit Parity 34
- #S Enter Setup Password 34
- #S= Store Setup Password 34
- +VCID Caller ID Selection 35
- Callback Security Commands 36
- #CBP Callback Parity 37
- #CBS Callback Enable/Disable 37
- S-Registers 38
- Result Codes 41
- Chapter 4 – Voice Commands 43
- Voice S-Register Summary 44
- Voice Commands 44
- Support 44
- Voice +V Commands Detail 45
- +VTS Send Voice Tone(s) 46
- +VRN Ringback Timer 50
- Flow Control 57
- Voice Mode Result Codes 57
- Voice Mode Shielded Codes 59
- DTE/DCE Interface Rates 61
- Configuration 62
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