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Chapter 1 – Product Description and Specifications

Multi-Tech Systems, Inc. SocketModem CDMA Developer’s Guide 5

Feature Details

Integration Reduces Space, Power, and Cost. The SocketModem

CDMA integrates the controller,

RF transceiver, and antenna interface in one module. This integration requires low power and low

real estate, and it provides an overall reduction in costs.

Reduces Development Time. The SocketModem CDMA can make your existing and next

generation device, machine, or system communication-ready without requiring significant hardware

changes to its design. This complete, ready-to-integrate wireless SocketModem allows you to

enhance your product while you focus on developing its core features.

Short Message Services. The SocketModem CDMA offers SMS features such as mobile originated,

mobile terminated, cell broadcast, Over the Air Activation (OTA), OTASP, and OTAPA.

Management Features. The SocketModem CDMA provides advanced management features that

include: phone book management, fixed dialing number, real time clock, and alarm management.

Industry-standard Modem Commands. The SocketModem CDMA provides industry-standard AT-

style commands for ease of integration into your existing software application.

SocketModem Pin-Out. The SocketModem CDMA interfaces easily with existing products through a

standard serial communication channel. The complete on-board RF transceiver interfaces with an

antenna for direct connection to wireless SMS, circuit-switched dial-up, or packet data networks. The

SocketModem also includes an onboard LED to display network status. The SocketModem is a Data

Terminal Equipment (DTE) device with serial asynchronous protocol support. The serial DTE channel

is capable of transfer speeds to 230K bps and can be interfaced directly to a UART or microcontroller.

Packet-switched Data. The SocketModem CDMA supports CDMA 2000 1xRTT packet-switched

cellular data. This enables mobile Internet functionality by allowing interworking between the existing

Internet and the cellular network at speeds up to 153K bps (forward and reverse). Any service that is

used over the fixed Internet today - File Transfer Protocol (FTP), web browsing, chat, e-mail, telnet is

available over the cellular network as well.

Circuit-switched Data (CSD). The SocketModem CDMA also supports CDMA IS-95A and IS-95B

circuit-switched cellular data connections. Circuit-switched data connections support speeds up to

14.4K bps as well as Class 2.0 Group 3 fax. CSD cellular wireless connections are ideal for

applications that require a quick wireless replacement of an existing point-to-point analog dial-up

connection. They integrate seamlessly with your current application requiring little infrastructure

change.

Universal Socket Connectivity. The SocketModem's flexible comm-port architecture provides dial-

up, wireless, or Ethernet socket connectivity with interchangeable modules. This means you can

utilize one system design and populate it with your communication module of choice. In addition, you

are assured a seamless migration to future technologies.

Developer’s Kit

The SocketModem CDMA Developer’s Kit allows you to plug in the SocketModem and use it for

testing, programming, and evaluation. The kit includes:

• one development board with RS-232 DB-25 connector

• universal power supply

• antenna

• RS-232 cable

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