Offices and professional services

An office phone system for professional services firms.

Give clients one main number, route calls to the right desk, and let every colleague have their own extension—without running your own PBX.

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A professional office team coordinating business calls

Reception that works

From the front desk to the right person.

Callers reach a business number, hear a menu or get transferred, and land with whoever can help. Missed calls become voicemail your team can return from any device.

D Line handles the phone system.

Your existing CRM, scheduling, and document tools keep running alongside it—D Line is the calling layer, not a replacement for your office software.

Practical by design

A phone system shaped for how your team works.

One main business number

A single number clients can call, with caller ID that shows your firm.

Routing and transfers

Menus, ring groups, and transfers to put callers with the right person.

Extensions for everyone

Unlimited extensions mean each colleague has their own line.

Business hours and voicemail

Set hours, route after-hours calls, and collect voicemail.

Messaging where enabled

Text clients back when SMS is enabled for your workspace.

Desk phones and apps

Counter and desk phones plus browser, desktop, and mobile apps.

Setup checklist

Get your office line live in five steps.

01List the colleagues who need an extension and the call paths to cover.
02Choose a new business number or request a porting review for your current one.
03Set up a menu, ring groups, transfers, and business hours.
04Decide which desks need phones and who works from apps.
05Enable messaging where you need it and prepare registration details.

Office phone system questions

Answers for offices and professional firms.

Can we keep our existing office number?

You can request a number port. Eligibility, records, and the transfer timeline require review and coordination.

Do we need desk phones for everyone?

No. Colleagues can take calls in the browser, on desktop, or on mobile. Desk phones are optional.

Can calls transfer between colleagues?

Yes. Transfers, ring groups, and menus let you direct callers to the right person.

Is there a receptionist option?

Routing, menus, and voicemail cover reception. The AI receptionist can also answer and route calls: Base includes the Base AI agent and Advanced includes the Advanced AI agent, each with 2,000 AI minutes a month.

Other industries

See how other teams set up D Line.

Comparing providers? See how D Line compares.

Put your office phone system on one business line.

Create a D Line workspace, choose your number, and keep your team reachable wherever work takes them.

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