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The CRM Glossary

Plain-English definitions of every CRM, sales pipeline, and AI CRM term. Built for buyers comparing tools and teams getting their pipeline in order.

Start hereCRM GlossaryA reference that defines every CRM, sales pipeline, lead, and AI CRM term in plain English.

Phone & Telephony

VoIP PhoneA phone, hardware or software, that places calls over the internet using VoIP.TelephonyThe technology that carries voice communication between people over a distance.Cloud TelephonyPhone service delivered over the internet from the provider's servers, with no on-site hardware.SIP TrunkingA method of delivering phone lines to a PBX over the internet using the SIP protocol.JitterVariation in the delay of voice data packets that degrades call quality.Virtual Phone NumberA phone number not tied to a specific device or line, routable to any phone over the internet.DID Number (Direct Inward Dialing)A direct phone number that routes straight to a specific person or extension.How VoIP WorksVoIP converts voice into data packets, sends them over the internet, and reassembles them at the other end.Hosted VoIPVoIP phone service delivered and managed entirely from the provider's cloud.SIP PhoneA phone that uses the SIP protocol to place and receive calls over the internet.SIP CallingMaking calls over the internet using the Session Initiation Protocol to start and end each session.PSTN (Public Switched Telephone Network)The traditional circuit-switched phone network that carries calls over physical copper lines.POTS (Plain Old Telephone Service)The basic analog landline service that runs over copper wires on the traditional phone network.PRI (Primary Rate Interface)A digital ISDN connection that delivers multiple phone channels to a business over one circuit.IP TelephonyThe delivery of voice communication over an IP network instead of the traditional phone line.CPaaS (Communications Platform as a Service)A cloud platform that lets businesses add voice, SMS, and video to their own apps through APIs.Cloud CommunicationsVoice, messaging, and video services hosted in the cloud and delivered over the internet.A2P 10DLCA US standard for sending application-to-person text messages over standard 10-digit long codes.Number PortingTransferring an existing phone number from one carrier or provider to another.LOA (Letter of Authorization)A signed document that authorizes a new provider to port your phone number from the old one.QoS (Quality of Service)Network settings that prioritize voice traffic so calls stay clear under load.Do Not Disturb (DND)A phone setting that silences incoming calls and routes them elsewhere while active.

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