Help with Fiber Optic Modems specifications:
General Specifications
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| Form Factor | |||
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| 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: | |||
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| 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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| Modem Speed | The maximum data transfer rate at which the modem can deliver data. It is normally expressed in bits/second. | ||
| Search Logic: | All matching products will have a value greater than or equal to the specified value. | ||
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| Fiber Type | |||
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| Single Mode | The fiber optic cable used is for single mode fiber. | ||
| Multimode | The fiber optic cable used is for multimode fiber. | ||
| 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
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| 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. | ||
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| 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. | ||
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