Chapter 1 – Description & Specifications
Benefits/Features in Applications
Short Development Time. The MultiModem GSM/ GPRS can make your existing and next generation device, machine, or system, communication-ready without requiring any hardware changes to its design. It actually provides faster time-to-market because it relieves the burden and expense of obtaining network and RF approvals. This complete, ready-to-deploy wireless modem allows you to enhance your product while you focus on developing its core features.
Voice Features. The MultiModem GSM/GPRS provides telephony and Dual Tone Multi Frequency (DTMF) functionality. It also allows for emergency calls as well as echo cancellation and noise reduction (option), and full rate, enhanced Full Rate and Half Rate (FR/EFR/HR).
Short Message Services. The MultiModem GSM/GPRS offers SMS features such as text and PDU, point-to-point (MT/MO) and cell broadcast.
Compatible Supplementary Services. The MultiModem GSM/GPRS is compatible with supplementary services such as call forwarding, call barring, multiparty, call waiting and call hold, calling line identification, advice of charge, USSD, closed user group and explicit call transfer.
Management Features. The MultiModem GSM/GPRS provides advanced management features including phone book management, fixed dialing number, and real time clock and alarm management.
Industry-standard Modem Commands. The MultiModem GSM/GPRS provides industry-standard AT-style commands for ease of integration into your existing software application.
Industrial Chassis. The MultiModem GSM/GPRS is packaged in a rugged, water resistant, industrial chassis. The chassis has an RS-232 DE-15 Voice/Data interface connector and a permanent screw-type power connector. It also has an SMA antenna connector. The chassis can be side-mounted on a panel or top-mounted on a desktop or other surface. A set of LEDs indicates the modem’s operational status.
Packet-Switched Data. The MultiModem GSM/GPRS supports GPRS Class 10 packet-switched cellular data. This enables mobile Internet functionality by allowing interworking between the existing Internet and the cellular network at speeds up to 85K bps. 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. The MultiModem GSM/GPRS supports PBCCH and coding schemes CS1 to CS4, and is compliant with SMG31bis.
Circuit-Switched Data (CSD). The MultiModem GSM/GPRS also supports GSM circuit-switched cellular data connections. Circuit-switched data connections support speeds up to 14.4K bps, Class 1 and Class 2 Group 3 fax, as well as MNP2 V.42bis compression. 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.
Internet-Enabled. The MultiModem GSM/GPRS includes an embedded TCP/IP protocol stack to bring Internet connectivity to any device. Using the embedded Internet protocols and the wirless connection to an IP network, it sends and receives data over the Internet. It can also serve a single web page in response to a web browser request.
