• Expert answers to your voice certification questions

    This guide gives expert advice on how to pursue voice certifications that complement your career and help you learn about your company's equipment.

  • VoIP: Glossary

    This handy glossary will assist you with terminology related specifically to voice over IP.

  • data transfer rate (DTR)

    The data transfer rate (DTR) is the amount of digital data that is moved from one place to another in a given time. (Continued...)

  • analog telephone adapter (ATA)

    An analog telephone adaptor (ATA) is a device used to connect a standard telephone to a computer or network so that the user can make calls over the Internet.

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  • call signaling

    Call signaling is a process that is used to set up a connection in a telephone network.  Definition

  • call deflection

    Call deflection is a feature of voice over IP (VoIP) that automatically redirects a call from the called endpoint to another endpoint (usually a voice mailbox) when the called endpoint is busy.  Definition

  • call detail record (CDR)

    A call detail record (CDR) in voice over IP (VoIP) is a file containing information about recent system usage such as the identities of sources (points of origin), the identities of destinations (endpoints), the duration of each call, the amount bill...  Definition

  • dial peer (addressable call endpoint)

    A dial peer, also known as an addressable call endpoint, is a device that can originate or receive a call in a telephone network.  Definition

  • dial peer hunting

    Dial peer hunting is a feature of voice over IP (VoIP) systems in which the device at the originating router attempts to find an alternative addressable call endpoint if it cannot establish a connection to the intended endpoint.  Definition

  • VoIP caller ID (Voice over Internet Protocol caller identification)

    VoIP caller ID (Voice over Internet Protocol caller identification) is a caller ID application for VoIP phones that works in much the same way as caller ID on a conventional telephone line but with enhanced features and flexibility... (Continued)  Definition

  • call admission control (CAC)

    Call admission control (CAC) is the practice or process of regulating traffic volume in voice communications, particularly in wireless mobile networks and in VoIP (voice over Internet Protocol, also known as Internet telephony)... (Continued)  Definition

  • call forwarding

    Call forwarding is a telephone service that automatically routes the user's incoming calls to another number.  Definition

  • ZRTP (Zimmermann Real-Time Transport Protocol)

    ZRTP is an extension of the Real-Time Transport Protocol (RTP) that describes a method of generating cryptographic keys for enhanced communications security and privacy... (Continued)  Definition

  • Videocast: What is the difference between UC and UM?

    In the SearchVoIP.com videocast, Whatis.com's Alex Howard discusses the differences between unified messaging and unified communications, the features each option allows users and the development of UM to UC. Whether you are considering UC or have al...  Definition

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