Multitech MT9234ZBAUSBCDC Podręcznik Użytkownika Pobierz pdf (Strona 31)

Chapter 1 – AT Commands, S-Registers, and Result Codes

Multi-Tech Systems, Inc. AT Commands for the MultiModem & SocketModem MT9234 Series (S000434H) 31

Syntax: ATMS=<carrier>,<automode>,<min_rate>,<max_rate>,<min_rx_rate>,

<max_rx_rate>

<carrier> Values: V92 V.92 (default)

V90 V.90

V34 V.34

V32B V.32bis

V32 V.32

V22B V.22bis

V.22 V.22

Bell212A Bell 212A*

V23C V.23, constant carrier, asymmetric FDM

V21 V21

Bell103 Bell 103*

*The +MS command was standardized by ITU-T recommendation V.250. However,

the standard command does not include the additional functionality provided by the

Bell212A and Bell103 values of the <carrier> parameter.

<automode> Values: Automatic modulation negotiation is enabled or disabled by <automode>.

However, if a value is specified for the <max_rate> then, automatic rate selection

is disabled and the modem will attempt to connect at the specified rate.

0 Disables automode.

1 Enables automode. (Default)

<max rate> Values: The <max_rate> specifies the highest connections rate for the DCE.

31200 Determined by modulation selected in <carrier>. (Default)

300-56000 Value limited by modulation selected <carrier>.

<max rate> for each <carrier>.

V34 2400 bits/s—33600 bits/s in steps of 2400 bits/s.

V32bis 4800 bits/s—19200 bits/s in steps of 2400 bits/s.

V32 4800 bits/s—14400 bits/s in steps of 2400 bits/s.

V22bis 2400 bits/s.

V22 2200 bits/s.

V23C, Bell212A 1200 bits/s.

V.21, Bell103 300 bits/s.

Valid <max rate> Range

56000 Determined by modulation selected in <carrier>. (Default)

300-56000 Value limited by modulation selected <carrier>.

Valid <max rx rate> Value for each <carrier>

V92 28000 bits/s—56000 bits/s in steps of 1333 bits/s

V90 28000 bits/s—56000 bits/s in steps of 1333 bits/s

V34 2400 bits/s—33600 bits/s in steps of 2400 bits/s

V32bis 4800 bits/s—19200 bits/s in steps of 2400 bits/s

V32 4800 bits/s—14400 bits/s in steps of 2400 bits/s

V22bis 2400 bits/s

V22 2200 bits/s

V23C, Bell212A 1200 bits/s

V.21, Bell103 300 bits/s

Reports: +MS? Reports current or selected options.

+MS? Reports supported options.

Result Code: OK

ERROR

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