Desktop Encyclopedia of Voice and Data Networking by Nathan J. Muller

By Nathan J. Muller

A better half quantity to the "Desktop Encyclopedia of Telecommunications", this booklet information the phrases and ideas of information conversation networks in a fashion either in-depth and obtainable to starting pros.

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So when a modem has no user data to send, it continuously transmits 1s to indicate to the other modem that it is in an idle state. When there is more data to send, the modem sends a single 0 bit to indicate that there is user data on the way. The next eight bits the remote modem receives is the real data. Then the line goes back to idle for at least one more bit. The 0 just before the user data is called the start bit. The 1 at the end is the stop bit (Figure 8). These control bits are often called flags.

Knowing what users are doing at their desktops promotes effective asset management. Specifically, the focus is on reporting actual usage, trends in usage site to site, what software 22 Applications Monitoring packages are being used effectively, and what ones are not being used at all. Gathering all license usage information in one place allows companies to see the big picture and use the information for decision support. Among other things, this can save money on software, support, and training.

AT&T also offers a server monitoring service as part of its Managed Network Solutions. Initially, these offerings have focused largely on configuration and monitoring of routers and frame relay access devices. Now, technicians at AT&T’s Global Client Support Center monitor corporate application servers across dozens or even hundreds of sites. AT&T watches for such things as excessive CPU usage, disk space exhaustion, performance degradation, and other problems that can affect the performance of applications.

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