Included Feature

Extension Dialing — One Phone System Across Every Location

Dial a 3 or 4 digit extension to reach anyone in your company — whether they sit across the hall, across town, or across the country. Your Chicago office dials extension 205 and it rings in Schaumburg. Your Naperville location transfers a call to extension 310 in the Loop. To the caller, it sounds like everyone's in the same building. Included at no extra charge.

  • Short-code dialing between all extensions
  • Works across multiple office locations
  • Includes remote workers and mobile app users
  • Free internal calls — no per-minute charges

How Extension Dialing Works

Every person on your system gets an extension number — typically 3 or 4 digits. To reach them, anyone else on the system just dials that number. No area code, no full phone number, no outside line. The call connects internally through the PBX regardless of physical location.

Because VoipPlus is cloud-hosted, "internal" means anyone connected to your PBX — desk phones at the office, a softphone on a laptop at home, or the mobile app on someones personal phone at a job site. Geography doesn't matter. If the extension is registered, it rings.

Multi-Location

Every Office on the Same System

Traditional phone systems require separate PBX hardware at each location. With VoipPlus, all your locations share one cloud PBX.

Traditional PBX VoipPlus (Cloud)
Inter-office calls Dial full 10-digit number, uses outside lines Dial 3-4 digit extension, free internal call
Transfer between locations Blind transfer to external number Warm or blind transfer by extension, just like next door
Ring groups across locations Not possible without complex trunking One ring group spans all locations seamlessly
Shared call queues Separate queues at each location One queue, agents at any location
Adding a new location Buy new PBX hardware, run new lines Plug phones into internet, assign extensions
Cost of internal calls Billed as external calls between sites Free — all internal traffic stays on the PBX
Works With Everything

Features That Pair With Extension Dialing

Dial-by-Name Directory

Callers who don't know the extension can spell the person's name on their keypad. The system looks them up and connects the call.

BLF (Busy Lamp Field)

Lights on your phone show which extensions are busy, ringing, or available. Glance at the phone to see if someone is free before transfering a call.

Intercom & Paging

Dial an extension with the intercom code and your voice comes through the speaker automatically. Page one person or an entire zone of phones at once.

Who Benefits

Businesses That Depend on Extension Dialing

Multi-Location Businesses

Law firms with a Chicago office and a Naperville satellite. Property managers with 7 locations across the suburbs. All on one system, all reachable by extension.

Remote & Hybrid Teams

Employees working from home are just an extension away. Coworkers dial their extension the same way they would if they were sitting in the next office. No difference.

Field Workers

Technicians, delivery drivers, and outside sales reps use the mobile app. They have an extension on the system just like desk-bound staff. Dispatch dials their extension to reach them.

Common Questions

Extension Dialing FAQ

How many extensions can I have?

There's no limit on the number of extensions. Add as many as your business needs — you only pay for concurrent channels, not for extensions. 50 extensions with 5 channels? That's $100/month.

Do internal calls use a channel?

Internal extension-to-extension calls do use channels on the PBX, but they don't incur any per-minute charges. They're free calls that happen inside your system.

Can I pick my own extension numbers?

Yes. You choose the numbering scheme — 3-digit, 4-digit, grouped by department or location. Extension 100-199 for Chicago, 200-299 for Schaumburg, whatever makes sense for your organization.

Can outside callers dial extensions directly?

Yes. Your auto-attendant can prompt callers with "If you know your party's extension, dial it now." They enter the extension and connect directly without going through a receptionist.

Does the mobile app get an extension?

Yes. The mobile app registers as an extension on your system. It can be the same extension as your desk phone (both ring simultaneously) or a separate extension — your choice.

Is there an extra charge for multi-location support?

No. All locations connect to the same cloud PBX. There's no per-location fee and no extra cost for inter-office calling. Plug phones into the internet at any location and they're on the system.

Connect Every Location With One Phone System

Extension dialing across all locations is included with every VoipPlus account. No per-site fees, no inter-office call charges.

View pricing · All Features · Auto-Attendant

Hoffman Estates, IL 60169 — Serving Chicagoland businesses since 2001