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Form Factor:

Bus / Interface Type:

Maximum Output Power:

Number of Channels:

Network Type:

Features:

Help with Cellular Modems specifications:

General Specifications
   Form Factor       
   Your choices are...         
   Internal       An internal modem is a computer card that is attached to the computer through a slot. 
   External       An external modem is a module that is connected to the system by means of a physical port. 
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   Bus / Interface Type:       
   Your choices are...         
   Type II Card       Type II card dimensions are 54mm x 85.4mm and may be up to 5.5 mm thick. Common uses of these cards: I/O devices such as data / fax modems, LAN adapter, non-rotating mass storage devices, etc. 
   CardBus       A card bus is a PC card with 32 bits of address and data. It runs at 33 MHz. 
   ISA       Industry standard architecture (ISA) buses can handle 16-bit data transfers at a clock speed of 8 MHz. They are also capable of handling memory under 16 MB. Extended ISA (EISA) is an enhanced version of the ISA bus. EISA buses run at 8 MHz, are capable of 32-bit data transfers, and can access all memory in the system. 
   PCI       Peripheral component interconnect (PCI) is a local bus system designed for high-end computer systems. PCI buses transfer 32 or 64 bits of data at a clock speed of 33 MHz. They also support 3 to 5 critical peripherals, which are either integrated directly onto the motherboard or added via expansion cards. PCI buses fully support cards that were developed for standard I/O buses. 
   RJ-45       RJ-45 connectors look a bit like a standard phone connector but are twice as wide (with eight wires). RJ-45s are used for connecting computers to local area networks (LANs), or for phones that connect to a number of lines. 
   ISDN BRI S/T Interface       The S/T interface is the connector on the ISDN modem where other ISDN devices connect in order to communicate over ISDN. 
   Serial Ports (RS232, RS422, RS485)       Serial Ports (Asynchronous Serial Interface): A system-to-system communication interface. Data is sent over a single wire (serial). Transmission is asynchronous because no synchronization or clocking signal is present. 
   ST       Designation for the "straight tip" connector developed by AT&T. This fiber optic connector features a physically contacting non-rotating 2.5mm ferrule design and bayonet connector-to-adapter mating. Used with Ethernet 10Base-FL and FIORL links. 
   USB       Universal serial bus (USB) is a 4-wire, 12-Mbps serial bus for low-to-medium speed peripheral device connections to personal computers (PC), including keyboards, mice, modems, printers, joysticks, audio functions, monitor controls, etc. The USB design is standardized by the USB Implementers Forum (USBIF), an organization that includes leading companies from the computer and electronics industries. The current USB specification is USB 2.0, which supports data transfer rates of up to 480 Mbps. 
   Other       Other unlisted interfaces. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Performance
   Maximum Output Power:       This is the transmission power of the device. It is defined as the strength of the signals emitted, often measured in mW. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Number of Channels:       The number of transmitting and receiving channels of the device. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Network Type       
   Your choices are...         
   Dial-up       Communication method where a device is connected to a network via a modem and a public telephone network. 
   Ethernet       Local Area Network (LAN) architecture was developed by Xerox® Corporation in cooperation with Digital Equipment Corporation® (DEC) and Intel® in 1976. 
   GSM       Global System for Mobile (GSM) Communications is a digital cellular system that uses narrowband Time Division Multiple Access (TDMA) technology. It allows eight simultaneous calls on the same radio frequency. 
   GPRS       General Packet Radio Service (GPRS) is a standard for wireless communications which runs at speeds up to 115 kilobits per second. 
   3G       3G is the third generation of mobile communication technology. 
   4G       4G is the fourth generation of mobile communication technology. 
   CDMA       Code Division Multiple Access (CDMA) technology is a channel access method. 
   Other       Other unlisted network types. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Features
           
   Your choices are...         
   Full Duplex Transmission?       Full duplex devices can transmit and receive at the same time. 
   Antenna Included?       An antenna may or may not be an integral part of the modem. 
   RF Connector?       Some radio modems include an RF connector that can be used to connect an antenna, or any other suitable RF device. Types of connectors include BNC, TNC, N, etc. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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