Ringer Equivalence Number REN, Hook Flash, Guard Tone

Regulatory Notices

The output power of this modem is fixed and cannot be changed by the user.

The approval mark attached to this product indicates that the modem itself carries BABT approval. No approval is conferred on the host computer or the serially connected computer and the label must not be transferred to the case of the computer. A copy of the approval label may be attached to the telephone line cable. The approval label must not be removed. The text of the approval mark is reproduced below:

APPROVED for connection to telecommunications systems specified in the instructions for use and subject to the conditions set out in them.

The modem does not incorporate circuitry to suppress bell-tinkle during pulse dialing. When used with some electronic ring type telephones and on two wire circuits that bell tinkle will occur during pulse dialing. This is not a fault and we advise you not to call the Fault repair service. This modem is not approved for use with parallel connected telephones when used in public dialing mode.

Ringer Equivalence Number (REN)

REN is a customer guide to indicate the maximum number of apparatus that may be connected simultaneously to a single telephone line without affecting the bell (or tone) ringing characteristics of the items connected. The REN of each line connection of the modem is 1. To calculate the maximum number of items that may be connected to a single exclusive telephone line add all the REN values of the connected equipment. The total should be 4 or less. Unmarked telephones are assumed to have a REN of 1. All other equipment must be clearly marked with it REN value. If a REN of 4 is marked on the apparatus, then only apparatus marked with a REN of 0 (zero) are permitted to be connected simultaneously. Because of the wide spread of characteristics a guarantee of successful operation in an installation of mixed types of equipment may not be given by the supplier.

This apparatus has a REN of 1.0 for each line connection.

Hook Flash

The XircomUser’s Guide refers to “Hook Flash’ using the “!” dial modifier. For use in the UK this modifier generates a momentary break of 95 ms (not 600 ms) in accordance with UK type approval regulations. This timing is fixed.

Guard Tone

By default the &Gn command is set to n=2 (1800 Hz).

Speaker Control

The Mn command controls the signal presented to the host PC. There is no speaker on the modem itself.

C-13

6500 specifications

The Compaq 6500, a significant entry in the realm of computing, emerged in the mid-1990s as a part of the Compaq Presario series. This desktop computer was designed to meet the demands of both home and small business users, offering a reliable and powerful solution for various computing needs.

One of the standout features of the Compaq 6500 was its robust performance. It was equipped with Intel's Pentium processors, which provided significant processing power for the time. Users could choose between different configurations, which made the 6500 versatile for tasks ranging from basic word processing to more demanding applications like graphic design and multimedia.

In terms of memory, the Compaq 6500 supported significant RAM upgrades, accommodating up to 64 MB of DDR RAM, which enhanced its multitasking capabilities. This was particularly useful for users who ran multiple applications simultaneously. The system also offered an array of storage options, featuring hard drives with capacities that ranged from 1 GB to 8 GB, allowing for ample space for documents, images, and software.

The Compaq 6500 showcased advanced technologies for its era, including support for Plug and Play devices, which simplified peripheral connections. This feature allowed users to easily add and remove devices like printers, scanners, and modems without extensive configuration, streamlining the user experience.

Another crucial characteristic was its graphics capabilities. The desktop came with integrated graphics technology, allowing for decent video output and enabling users to enjoy multimedia content. For more demanding users, the system could be equipped with dedicated graphics cards, enhancing its performance in gaming and graphics rendering.

In terms of connectivity, the Compaq 6500 was equipped with various ports, including serial and parallel ports, and later models introduced USB support, paving the way for a broader range of peripherals and external devices.

The design of the Compaq 6500 also deserves mention; it featured a compact and functional chassis that was relatively easy to access, allowing users to upgrade components as needed. Its attractively sleek design made it a fitting choice for both home environments and office settings.

Overall, the Compaq 6500 was a well-rounded desktop computer that balanced performance, usability, and upgradeability, making it a notable choice during its time. It exemplified Compaq's commitment to delivering reliable technology to consumers, solidifying its place in the annals of computing history.