PC Serial Ports

2.For best performance with the PassageWay adapter, choose a card that has hardware support for high-speed communications.

The PassageWay adapter operates at a data rate of 19.2 Kbps, and it relies on Windows to manage the flow of data through your PC's serial port. Depending upon your configuration, Windows may have problems maintaining high data rates through traditional serial ports. In these situations, a serial port designed for high-speed communications can eliminate such problems while providing a reduced load on the microprocessor (thus increasing the performance of Windows during data transfers relative to standard serial ports). In most cases, the price differential for such a card is quite modest and a worthwhile investment.

Many serial port cards on the market (and most built-in serial ports) use either the 8250 or 16450 Universal Asynchronous Receiver Transmitter (UART) as their key component. Although these UARTs can operate at high speeds, they do not assist the PC's microprocessor in dealing with high-speed data transfer. Under Windows, in particular, data can be lost at high baud rates using these UARTs. If this data loss occurs, the PassageWay adapter cannot function properly.

Whenever possible, select a serial port card that uses the 16550 UART. This industry-standard UART is an improved version of the 16450 with hardware support to help offload the microprocessor during high-speed data transfers. Windows 3.1 has built-in support for the 16550, so no special software configuration is required to obtain the benefits of the 16550's enhanced capabilities. In addition, any high-speed peripheral can benefit from the 16550 (for example, a 9.6-Kbps or 14.4-Kbps data and/or fax modem), not only the PassageWay adapter.

In general, since there is no way of knowing ahead of time if your particular PC configuration requires an enhanced serial port for the PassageWay adapter, Lucent strongly recommends that you purchase a card based on the 16550 UART to insure trouble-free operation with the PassageWay adapter.

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Lucent Technologies passageway service provider  for merlin legend communications system manual

passageway service provider for merlin legend communications system specifications

Lucent Technologies, a prominent player in the telecommunications industry, was pivotal in the development and provision of communication solutions, including the Passageway Service Provider for the Merlin Legend Communications System. This innovative solution was designed to enhance communication efficiency for businesses of all sizes, particularly in bustling office environments.

The Passageway Service Provider functioned as a crucial component in the Merlin Legend ecosystem, enabling seamless integration and management of voice and data communications. One of its main features was the ability to facilitate streamlined access to various communication channels, ensuring that users could handle calls, faxes, and Voicemail with ease. This integration was essential for businesses that required uninterrupted connectivity and straightforward management of their communication systems.

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In summary, Lucent Technologies' Passageway Service Provider for the Merlin Legend Communications System offered a comprehensive suite of features, advanced technologies, and essential characteristics that catered to the dynamic needs of modern businesses. By enhancing voice and data management, it contributed to smoother operations and improved communication efficiency, defining a new standard in the telecommunications landscape.