Utility data management is an easy-to-use billing and utility management solution used to convert the meter reads into billable transactions. This management includes billing & work orders, cash receipts, inventory & purchase orders, bank link software, billing analysis software, and capital credits software.

Virtual private network uses a public network infrastructure to make the connections among geographically dispersed nodes, instead of using cables owned or leased exclusively for one single networks use, as is typical for a wide area network. To the user, a VPN looks just like a private network, hence the virtual in its name, even though it is sharing a web of cables with the traffic of hundreds or thousands of other users at the same time. It has all the characteristics of a private network-limited access to only authorized users, for example it shares the same public infrastructure with other users.

Voicemail is a centralized system of managing telephone messages for a large group of people. Voicemail messages are stored on hard disk drives, media generally used by computers to store other forms of data. Messages are recorded in digitized natural human voice similar to how music is stored on a CD. To retrieve messages, a user calls the system from any phone, logs on using touch-tones, and his messages can be retrieved immediately. Voicemail systems are much more sophisticated than answering machines in that they can answer many phones at the same time, store incoming voice messages in personalized mailboxes associated with the user's phone number, send messages to one or more other user voice mailboxes, store voice messages for future delivery, transfer callers to another phone number for personal assistance and play different message greetings to different callers.

A VoIP phone is an internet telephony application in a personal computer. To call from a voip phone to a PSTN telephone the caller can encapsulate the called party's phone . The telephone number in a call initiation message is sent to a media gateway controller. The media gateway controller identifies the most appropriate internet gateway, perhaps the one closest to the called party so as to minimize telephone charges. It provides this gateway with the destination telephone number and the IP address and telephony application port number of the caller.

Voltage output module provides a single channel of analog output. The track-and-hold circuit in the input stage can be operated in a hold mode where one DAC can supply many output modules, or a track mode where one DAC is dedicated to each module. In addition to the track-and-hold circuit, each module provides signal buffering, isolation, filtering, and conversion to a high-level voltage output.