Extensions & Phone Numbers

Managed Voice

Extensions & Phone Numbers

Your extensions (internal short numbers) and your public phone numbers form the foundation. Everything else in your phone system routes around them.

Close up of paper cards, representing UCSTAK's Extensions & Phone Numbers feature.

Extension Management →

Add, remove, and reassign internal extensions in minutes, without needing a technician on site.

Direct Inward Dialing (DID) Numbers →

Give a person, department, or campaign a direct phone number that rings straight in.

Outbound Caller ID (DOD) →

Control exactly which number shows up on the recipient’s caller ID when your team calls.

Number Porting →

Move your existing phone numbers over from your current provider. We schedule the switch to avoid any gap in service.

Local & Toll-Free Numbers →

Get local numbers in the areas you serve, plus toll-free numbers for a national presence. All on the same system.

Emergency Calling (E911) →

Every 911 call automatically shares the correct office address with dispatchers, even across multiple locations.

E911 for Remote, Hot-Desk & Field Workers →

Keep emergency location accurate no matter where someone is calling from.

Call Tracking Numbers for Marketing →

Assign a unique tracking number to each marketing campaign or webpage. Then see exactly which one is generating calls.

Common-Area & Guest Phones →

Set up phones for lobbies, conference rooms, and other shared spaces not tied to one employee.

See how extensions & phone numbers fits into your day-to-day — let’s talk.