MultiModemZPX User Guide

4 AT Commands, S-Registers, and Result Codes

Command: +MS=

Modulation Selection

Values:

See description.

Defaults:

See description.

Description:

This extended-format command selects modulation, enables or

 

disables automode, and specifies the highest downstream and

 

upstream connection rates using one to four subparameters.

 

The command syntax is

 

+MS=[mod][,[automode][,[0][,[max_rate][,[0][,[max_rx_rate]]]]]]<CR>

 

Subparameters that are not entered retain their current value.

 

Commas separate optional subparameters, and must be in-

 

serted to skip a subparameter. Example: +MS=,0,<CR> disables

 

automode and keeps all other settings at their current values.

+MS=? Reports supported options in the format (list of supported mod values),(list of supported automode values),(0),(list of sup- ported max_rate values),(0),(list of supported max_rx_rate val- ues). Example: +MS: (BELL103, V21, BELL212A, V22, V22B, V23C, V32, V32B, V34, V90, V92), (0, 1), (0), (0-33600), (0), (0- 56000)

+MS? Reports current options in the format mod, automode, 0, max_rate, 0, max_rx_rate. Example: +MS: V92, 1, 0, 33600, 0, 56000.

Subparameters

mod Specifies the preferred modulation (automode enabled) or the modulation to use in originating or answering a connection (automode disabled). The default is V92.

mod

Modulation

Possible rates (bps)1

 

V922

V.92

56000, 54667, 53333, 52000, 50667, 49333, 48000, 46667,

 

 

 

45333, 44000, 42667, 41333. 40000, 38667, 37333, 36000,

 

 

 

34667, 33333, 32000, 30667, 29333, or 28000

 

V903

V.90

56000, 54667, 53333, 52000, 50667, 49333, 48000, 46667,

 

 

 

45333, 44000, 42667, 41333. 40000, 38667, 37333, 36000,

 

 

 

34667, 33333, 32000, 30667, 29333, or 28000

 

V34

V.34

33600, 31200, 28800, 26400, 24000, 21600,19200, 16800,

 

 

 

14400, 12000, 9600, 7200, 4800, or 2400

 

V32B

V.32bis

14400, 12000, 9600, 7200, or 4800

 

V32

V.32

9600

or 4800

 

V22B

V.22bis

2400

or 1200

 

V22

V.22

1200

 

 

V23C

V.23

1200

 

 

V21

V.21

300

 

 

Bell212A

Bell 212A

1200

 

 

 

 

 

 

 

Bell103

Bell 103

300

 

 

 

 

 

 

 

Notes:

1. See optional <automode>, <max_rate>, and <max_RX_rate> subparameters.

2. Selects V.92 modulation as first priority. If a V.92 connection cannot be established, the modem attempts V.90, V.34, V.32bis, etc.

3. Selects V.90 modulation as first priority. If a V.90 connection cannot be established, the modem attempts V.34, V.32bis, etc.

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Multi-Tech Systems MT5634ZPX-PCI-V92 manual Modulation Selection
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MT5634ZPX-PCI-V92 specifications

The Multi-Tech Systems MT5634ZPX-PCI-V92 is a high-performance V.92 data/fax modem designed to enhance communication capabilities in various applications. This modem is particularly well-suited for commercial and industrial environments where reliable connectivity is crucial.

One of the standout features of the MT5634ZPX-PCI-V92 is its support for the V.92 protocol, which allows for quicker uploads and improved connection speeds compared to earlier standards. It offers download speeds of up to 56 Kbps and upload speeds of up to 48 Kbps, making it an excellent choice for businesses that rely on time-sensitive data transmission. The modem's ability to maintain reliable connections even over noisy telephone lines is a critical aspect of its design, ensuring that users can depend on it for essential communications.

The MT5634ZPX-PCI-V92 also includes advanced error correction and data compression technologies, such as MNP 4 and V.42bis. These technologies work together to ensure data integrity during transfers and to maximize throughput, enabling users to send larger files without compromising quality or speed. Additionally, the modem features a robust fax capability, supporting both analog and digital fax transmissions, which is vital for businesses that frequently deal with document sharing.

A notable characteristic of the MT5634ZPX-PCI-V92 modem is its PCI interface, which allows for easy integration into desktop systems. This plug-and-play capability simplifies installation and setup, making it accessible for users with varying levels of technical expertise. The modem is built on a reliable hardware platform, characterized by its durable components, making it ideal for environments where long-term use is expected.

Moreover, the MT5634ZPX-PCI-V92 comes with comprehensive driver support for various operating systems, including Windows and Linux, ensuring compatibility with a wide range of applications. With its combination of speed, reliability, and ease of use, the Multi-Tech Systems MT5634ZPX-PCI-V92 modem remains a popular option for businesses looking to maintain effective communication channels through dial-up connectivity. Whether for data transmission or faxing, it stands as a solid choice for organizations that require dependable performance in a compact form factor.
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