Glossary

Cloud communications glossary

Plain-language, definition-first explanations of the building blocks of programmable voice (CPaaS), cloud contact centers (CCaaS), and the telephony concepts they rely on.

CPaaSWhat is CPaaS?

A Communications Platform as a Service: voice, messaging, and video delivered as developer APIs.

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CCaaSWhat is CCaaS?

A Contact Center as a Service, with call-center routing, queuing, and agent tools in the cloud.

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CPaaS vs CCaaS vs UCaaSHow they differ

How three cloud-communications models differ by audience and use case.

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ACDAutomatic Call Distribution

The system that routes inbound calls to the right agent or queue.

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SIP trunkingWhat is SIP trunking?

Carrying phone calls over IP using the SIP protocol instead of physical lines.

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DIDDirect Inward Dialing

A phone number that routes external callers to a specific destination.

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IVRInteractive Voice Response

An automated phone menu that interacts with callers via voice or keypad.

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EWTEstimated Wait Time

A prediction of how long a caller will hold in a queue before reaching an agent.

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BYOCBring Your Own Carrier

Keeping your existing telephony carrier and rates while moving call control to a CPaaS platform.

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SoftphoneWhat is a softphone?

A software app that makes and receives calls over the internet using SIP or WebRTC, in place of a desk phone.

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STIR/SHAKENWhat is STIR/SHAKEN?

The telecom standard that cryptographically signs caller ID to fight robocalls and spoofing.

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WFMWorkforce Management

Scheduling contact-center agents and measuring their adherence to the schedule.

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Ring groupWhat is a ring group?

A set of phones that all ring for the same call, with a fallback if nobody answers.

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