Hot Desking with VoIP: Using Any Phone as Your Extension

What Is Hot Desking?

Hot desking is a flexible working arrangement where employees don't have a permanently assigned desk. Instead, they sit at any available workstation when they arrive at the office. With traditional phone systems, this was problematic — your phone number was tied to a specific physical phone on a specific desk. With hosted VoIP, hot desking is seamless: you can log into any IP phone in any office and it instantly becomes your personal extension with all your settings.

How VoIP Hot Desking Works

The process is simple and takes just seconds:

Sit down at any desk with an IP phone.
Enter your extension number and PIN using the phone's keypad (or dial a hot desk feature code).
The phone downloads your profile from the cloud — your extension number, caller ID, speed dials, voicemail settings and personal preferences are all applied to the phone.
The phone is now yours — incoming calls to your extension ring on this phone, outbound calls display your caller ID, and your voicemail is accessible.
When you leave, log out (or the system logs you out automatically) and the phone reverts to its default state, ready for the next person.

Benefits of VoIP Hot Desking

Flexible Seating

Employees can sit wherever suits them — near their team for a collaborative project, in a quiet area for focused work, or at a different branch office entirely. Their phone extension follows them wherever they go.

Reduce Phone Hardware Costs

Without hot desking, you need one phone per employee. With hot desking, you only need phones for the maximum number of people in the office at any one time. If your 50-person company has 30 people in the office on any given day, you only need 30 phones — a significant cost saving on hardware.

Multi-Site Working

For businesses with multiple offices, hot desking means an employee can walk into any office, log into any phone and work as normal. This is invaluable for:

Staff who split time between offices
Visiting managers or directors
Teams that rotate between sites
Temporary or contract workers

Disaster Recovery

If one office becomes unavailable (flood, fire, power outage), staff can relocate to another office and immediately log into phones there, maintaining business continuity without any IT intervention.

Setting Up Hot Desking

Configuring hot desking on your hosted VoIP system typically involves these steps:

Enable Hot Desking in the Admin Portal

Log in to your VoIP admin portal.
Navigate to the Hot Desking or Shared Desk settings (the exact location varies by provider).
Enable hot desking for the extensions that will use this feature.
Configure the phones that will serve as hot desk endpoints — these phones need to be set to hot desk mode rather than being permanently assigned to a specific extension.

Assign PINs to Users

Each user who will use hot desking needs a personal PIN (typically 4–6 digits).
Assign PINs through the admin portal or allow users to set their own PIN.
Ensure PINs are unique and not easily guessable (avoid 1234, 0000, etc.).

Configure Default Phone State

Decide what the phone displays when no one is logged in:

Login prompt — The phone displays a prompt asking for an extension number and PIN.
Default extension — The phone reverts to a default shared extension (e.g., a reception or general enquiries line) when no one is logged in.
Locked screen — The phone is locked and cannot make or receive calls until someone logs in.

Logging In and Out

Logging In

The login process varies slightly by provider but typically involves one of these methods:

Feature code — Dial a code (e.g., *11) followed by your extension number and PIN.
On-screen prompt — The phone displays a login screen where you enter your extension and PIN using the keypad.
Web portal — Some systems allow you to assign yourself to a phone remotely through the web portal.

Logging Out

Manual logout — Dial a logout code (e.g., *12) or select Logout from the phone's menu.
Automatic logout — Configure the system to automatically log users out at a set time (e.g., 6pm every day) or after a period of inactivity (e.g., 8 hours with no calls).
Remote logout — Administrators can log users out remotely through the admin portal if someone forgets to log out.

Personal Settings That Follow You

When you log into a hot desk phone, your personal profile is applied. Depending on your VoIP system, this typically includes:

Extension number — The phone rings on your personal extension.
Caller ID — Outbound calls display your personal direct dial number or the company main number as configured.
Speed dials — Your personal speed dial buttons are loaded onto the phone's line keys.
Voicemail — Your personal voicemail box is accessible from the phone.
Call history — Your recent call history may be available (depending on the system).
Do Not Disturb settings — Your DND preferences are applied.
Call forwarding rules — Your personal forwarding rules (see our call forwarding guide) are active.

Combining Hot Desking with Softphones

For ultimate VoIP flexibility, combine hot desking with a softphone:

In the office — Log into a hot desk phone for the best desk phone experience.
Away from your desk — Use a softphone on your mobile to stay reachable.
Working from home — Use a softphone on your laptop or take a desk phone home (see our working from home guide).
Travelling — Use the mobile softphone app to make and receive calls on your business number from anywhere.

With this combination, your business extension is always available regardless of where you are or what device you're using.

Best Practices for Hot Desking

Label desks clearly — If some desks are designated hot desks and others are permanent, label them clearly to avoid confusion.
Provide headsets at each desk — Since users move between desks, provide a headset at each hot desk station so they don't need to carry one around.
Clean desk policy — Encourage users to leave the desk clean and tidy when they log out, ready for the next person.
Train all users — Ensure everyone knows how to log in, log out and access their features on a hot desk phone.
Monitor usage — Use your admin portal to track hot desk usage patterns. This helps you determine if you have the right number of hot desk phones available.

Ready to implement hot desking for your team? Get a quote for hosted VoIP and we'll configure shared desk phone capabilities across all your offices.