What is an extension and what are its types?

Companies use extension numbers in their phone systems to route calls efficiently. Extensions provide a direct and effective way to communicate with specific individuals or departments within an organization.

Updated October 01, 2025

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What Is an Extension and What Are Its Types in Hipcall

An extension is a dialable component of the PBX system. It can represent a team, a user, a smart routing rule, or a greeting. Typically, the caller first dials the company’s main number, then enters the extension number to reach the desired person or department directly.

Extension Types

Hipcall supports multiple types of extensions.

1. User

Each account user in Hipcall can have a short number assigned as their extension. When the extension type is a user account, it is referred to as a user extension.
Example: 1010; Melek KARAKAYA

2. Greeting

If the extension target is a greeting, the extension type will be classified as a greeting.
Example: 12; After-hours greeting

3. Teams

When you create a team in Hipcall, you can assign an extension to it. Dialing that extension will route the call directly to the team.
Example: 100; Sales team

4. Smart Routing

While creating a smart routing rule in Hipcall, you can assign a default extension. This allows callers to reach the smart routing target directly by dialing the extension.
Example: 15; Smart routing – Transfer to last agent

5. Voicemail

When setting up voicemail in Hipcall, you can assign a default extension. Callers who dial this extension will be directed to leave a voice message.
Example: 300; Leave a voicemail

To view all extensions in your Hipcall account, go to Settings > Phone System >Extensions

Ensure that the Direct Extension Dialing feature is enabled in your Greetings so callers can reach the relevant person, team, or greeting by dialing an extension.