## Voice Gateway Glossary Voice Gateway terms listed in alphabetical order. All terms in the glossary are given for informational purposes. ## A **Account (scope)** A user role within the Voice Gateway Self-Service Portal. This scope includes basic operations with Voice Gateway entities, such as creating, editing, and deleting entities. Note that only users with the Account scope can be authorized in the Voice Gateway Self-Service Portal via their Cognigy.AI user credentials. For more information, read the [Users documentation](https://docs.cognigy.com/voice-gateway/webapp/users#account). **Accounts** Containers for resources such as applications, carriers, and speech services that are used to create and manage voice applications. In Voice Gateway, an Account may represent a specific customer organization and can have multiple users associated with it. For more information, read the [Accounts documentation](https://docs.cognigy.com/voice-gateway/webapp/accounts). **Admin (scope)** A user role (scope) within the Voice Gateway Self-Service Portal. This scope is only available for on-premises Cognigy Voice Gateway installations. It includes all operations in the Account and Service Provider scopes, allowing for performing all operations in the Voice Gateway. For more information, read the [Users documentation](https://docs.cognigy.com/voice-gateway/webapp/users#admin). **Alerts** Alerts are created when errors happen in your account configuration. For example, your credentials from the speech provider need to be updated. For more information, read the [Alerts documentation](https://docs.cognigy.com/voice-gateway/webapp/alerts). **Applications** Connectors that allow the Endpoint to be routed to the Voice Gateway. For more information, read the [Applications documentation](https://docs.cognigy.com/voice-gateway/webapp/applications) and [Create Voice Gateway Endpoint documentation](https://docs.cognigy.com/voice-gateway/getting-started#create-a-voice-gateway-endpoint). **Atmosphere Sounds** A parameter within the Session Config Node, which allows the user to configure a background track to be played during the conversation. An Atmosphere Sounds track can be played, silenced, or stopped at any point during the Voice Gateway conversation. For more information, read the [Voice Gateway Parameter Details documentation](https://docs.cognigy.com/ai/agents/develop/node-reference/voice/voice-gateway/parameter-details). ## C **Carriers** Telecommunications service providers are responsible for operating the networks that transmit voice traffic. Within the Voice Gateway Self-Service Portal, you can use different providers such as Voxbone, Twilio, and Simwood. These providers are also known as [SIP Trunk providers](https://docs.cognigy.com/voice-gateway/glossary#s). For more information, read the [Carriers documentation](https://docs.cognigy.com/voice-gateway/webapp/carriers). **Click To Call** The Click To Call feature allows you to embed a multimodal widget into your website and allow customers to speak directly with AI Agents. Click To Call uses the Web Real-Time Communication (WebRTC) protocol for voice communications. For more information, read the [Click To Call documentation](https://docs.cognigy.com/click-to-call/overview). **Cognigy VG** See [Voice Gateway documentation](https://docs.cognigy.com/voice-gateway/glossary#v). ## O **Outbound Call Routing** Outbound Call Routing allows you to select a Carrier (SIP Trunk) for outbound calls and configure specific rules for call routing. For more information, read the [Outbound Call Routing documentation](https://docs.cognigy.com/voice-gateway/webapp/outbound-call-routing). ## P **Phone Numbers** Phone Numbers are routed to your Endpoints. To assign applications to phone numbers, you need to select both an Account and a Carrier. For more information, read the [Phone Numbers documentation](https://docs.cognigy.com/voice-gateway/webapp/phone-numbers). ## R **Recent Calls** A feature that enables you to analyze the calls in your Voice Gateway account, providing valuable insights into the duration of various actions during the call. For more information, read the [Recent Calls documentation](https://docs.cognigy.com/voice-gateway/webapp/recent-calls). **Roles** See [Scopes documentation](https://docs.cognigy.com/voice-gateway/glossary#s). ## S **Scope** A user role and the permissions associated with it. For more information, read the [Scopes documentation](https://docs.cognigy.com/voice-gateway/webapp/users#scopes). **Service Provider (scope)** A scope within the Voice Gateway Self-Service Portal. For more information, read the [Users documentation](https://docs.cognigy.com/voice-gateway/webapp/users#service-provider). **Settings** Options to configure your Voice Gateway Account. See [Accounts documentation](https://docs.cognigy.com/voice-gateway/glossary#a). **Silence Overlay** A parameter within the Session Config Node, which allows playing an MP3 track wherever an extended silence occurs. For more information, read the [Silence Overlay documentation](https://docs.cognigy.com/ai/agents/develop/node-reference/voice/voice-gateway/parameter-details). **SIP Hop** A path the SIP message takes between two SIP elements in a network. For more information on SIP connections, read the [Wikipedia Session Initiation Protocol](https://en.wikipedia.org/wiki/Session_Initiation_Protocol) documentation. **SIP Trunk** A mechanism that allows connecting phone systems to the public telephone network using the Session Initiation Protocol (SIP) over an IP network. For more information, read the [SIP trunking documentation](https://en.wikipedia.org/wiki/SIP_trunking). **SIP Trunk Providers** Providers offering services enable the connection of phone systems to the public telephone network using the Session Initiation Protocol over an IP network. These providers enable businesses to make and receive calls over the Internet. For more information, read the [SIP Trunk Providers documentation](https://docs.cognigy.com/voice-gateway/references/sip-trunk-providers) and [Carriers documentation](https://docs.cognigy.com/voice-gateway/webapp/carriers). **Speech Services** Settings that serve for integrating Speech-to-Text (STT) or Text-to-Speech (TTS) providers in the Voice Gateway Portal. For more information, read the [Speech Services documentation](https://docs.cognigy.com/voice-gateway/webapp/speech-services). **STT** STT (Speech-to-Text) is a technology that consistently converts spoken language into written text. For more details, see [Wikipedia: Speech recognition](https://en.wikipedia.org/wiki/Speech_recognition). ## T **Tracing** Tracing logs are valuable for diagnosing issues, optimizing performance, and understanding the flow of operations for inbound calls. For more information, read the [Recent Calls documentation](https://docs.cognigy.com/voice-gateway/webapp/recent-calls). **TTS** TTS (Text-to-Speech) is a technology that transforms written text into spoken words. For more details, see [Wikipedia: Speech synthesis](https://en.wikipedia.org/wiki/Speech_synthesis). ## U **Users** Members in your account. For more information, read the [Users documentation](https://docs.cognigy.com/voice-gateway/webapp/users). ## V **Voice Gateway** An AI-based solution to deploy voice AI Agents for automated phone conversations. For more information, read the [Voice Gateway documentation](https://docs.cognigy.com/ai/agents/deploy/endpoint-reference/voice-gateway) and [Voice Gateway Overview documentation](https://docs.cognigy.com/voice-gateway/overview). **Voice Gateway Endpoint** A connector within Cognigy.AI that enables seamless interaction between the AI Agent and external systems or platforms. For more information, read the [Endpoints documentation](https://docs.cognigy.com/ai/agents/deploy/endpoints/overview) and [Create Voice Gateway Endpoint documentation](https://docs.cognigy.com/voice-gateway/getting-started#create-a-voice-gateway-endpoint). **Voice Gateway Events** Events that refer to specific occurrences or incidents during a voice call that are recorded by Voice Gateway. For more information, read the [Voice Gateway Events documentation](https://docs.cognigy.com/voice-gateway/references/events/overview). **Voice Gateway Flow** A structured sequence of interactions designed for voice-enabled applications within the Cognigy.AI platform. For more information, read the [Create Voice Gateway Flow documentation](https://docs.cognigy.com/voice-gateway/getting-started#create-a-voice-gateway-flow). **Voice Gateway Flow Nodes** Cognigy Voice Gateway Nodes expose the functionality provided by Cognigy Voice Gateway directly in the Flow Editor. For more information, read the [Voice Gateway: Nodes Overview documentation](https://docs.cognigy.com/ai/agents/develop/node-reference/voice/voice-gateway/overview). **Voice Gateway Self-Service Portal** A web-based interface that empowers users to manage their accounts, settings, and preferences for Cognigy Voice Gateway. For more information, read the [Voice Gateway Self-Service Portal documentation](https://docs.cognigy.com/voice-gateway/webapp/overview). Last modified on April 29, 2026.