DSP is the acronym for Digital Signal Processor, which is a specialized type processor typically used to handle video or audio signals.  In most cases, DSP would be used to process sound and other analog signals that have been converted into some type of digital form.  Depending on what you need, DSP is sometimes used to help decode modulated signals from modems, or to process video, images, and sound in various ways.  In addition, DSP can be used to understand data from radar and sonar, as well as seismological readings.

Although telephony is a technology that has only been around for a few years, today you can find it used in companies around the country, working to keep the businesses running.  The great thing about telephony is that it includes a huge list of possible features.  Additionally, the IP telephony system has many different applications that make is scalable, useable, and cost effective, far more than a standard PBX environment.

Fax machines are commonly found in businesses and homes across the world, providing small and large companies, as well as individuals a way of sending and receiving paper documentation.  Fax machines have a dedicated fax number that can be called for documents to be sent.  The machine itself is connected to a standard phone line so no special connections or cabling is required.

Calling cards are a way of making long-distance phone calls, whether domestically or internationally.  When using a calling card anytime a long-distance call is made, you save money.  Without monthly bills, long and complicated phone statements, and no hassles, more and more people are using calling cards.

An auto dialer is a type of telephony device that uses a special board designed with speed dialing and voice processing capabilities.  These PC-based systems are fully automated and have the capability of dialing a large number of people.  The message associated with the auto dialer is prerecorded and played to the individual answering the phone or a message is left on a voicemail machine.  Also called telemarketing dialers, automated dialers, speed dialers, and voice broadcasting equipment, they all do the same thing.