The PSTN switch-off is quickly approaching. Is your business ready?

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The moving date can look comfortably distant until someone asks where customer calls will land on Monday morning. An office relocation telecoms checklist turns that question into a managed plan, protecting the phone numbers, connectivity and communications tools your team relies on while the business changes address.

For many organisations, telecoms are not simply another item on the facilities list. Calls may be routed through a cloud phone system, teams may work between home and office, and critical services may depend on a reliable internet connection. Planning these elements early gives suppliers, IT teams and operational leaders the time to make sound decisions rather than last-minute compromises.

Why telecoms must be planned before the move

A new office can be ready for desks and still be unready for business. Broadband and leased-line lead times vary, building access can affect installation dates, and some sites need landlord permissions or wayleave agreements before work can begin. Older or multi-occupancy buildings can bring additional constraints.

The right approach depends on the organisation. A small team using cloud telephony may be able to work flexibly while connectivity is being finalised, whereas a contact centre, legal practice or healthcare provider may need defined resilience arrangements and careful testing before staff arrive. The objective is the same in every case: customers and colleagues should remain able to reach the right people.

Office relocation telecoms checklist

Treat the following as a coordinated project plan, with a named internal owner and a telecoms partner involved from the earliest stages.

1. Confirm the new site’s connectivity options

Ask for a full review of the available services at the new address before committing to assumptions about speed or installation timing. Establish which network services are already present, what new provision is possible and whether the premises require landlord consent, a survey or building works.

It is also worth considering how the connection will be used. Standard office traffic, hosted voice, video meetings, cloud applications and guest Wi-Fi all share capacity. A connection that appears sufficient on paper may not be suitable once busy periods, hybrid working and future growth are considered.

2. Set a realistic telecoms timetable

Work backwards from the intended move date, allowing time for surveys, order processing, installation, testing and contingency. Do not make the physical move the only deadline. The connection must be live early enough for the phone system, security measures and essential applications to be checked properly.

A project timetable should identify decision points, owners and dependencies. This is especially useful where a landlord, building manager, fit-out contractor and several technology providers are involved. Clear ownership prevents a missing permission or delayed access appointment from becoming a business interruption.

3. Map every number, line and calling requirement

Create a complete picture of what the organisation uses today. This includes main geographic numbers, direct dial numbers, fax or alarm lines where still present, mobile numbers used for customer contact, call queues, hunt groups and recorded messages.

The exercise often reveals services that have no obvious owner but remain business-critical. A number printed on long-standing stationery, an out-of-hours line or a payment terminal connection can easily be overlooked. Confirm what should move, what should be retired and what needs to be replaced as part of the wider modernisation plan.

4. Plan number porting early

Keeping established phone numbers can protect customer confidence, but number porting is a process that needs accurate information and agreed timing. Check which provider currently controls each number range, whether there are contractual notice periods and whether all details on the account are correct.

Porting should be planned around operational need, not simply convenience. In some cases, temporary call forwarding or a staged migration offers a sensible bridge. Your telecoms provider should explain the options clearly, coordinate the port date and give the business a practical plan for communicating any short transition window.

5. Review the phone system for the way people work now

An office move is a useful moment to question whether legacy equipment still serves the business. With the UK PSTN switch-off progressing, organisations using older analogue or ISDN-based services should assess their replacement path rather than carrying avoidable limitations into a new premises.

Cloud VoIP, Microsoft Teams telephony and contact centre tools can support office-based, remote and mobile colleagues from one managed environment. However, the right solution depends on call volumes, compliance needs, existing software and how staff support customers. A busy reception team needs different call handling from a sales team that spends much of the week travelling.

6. Build resilience into the connectivity plan

No connectivity service is entirely immune to faults, so the discussion should include what happens if the primary connection becomes unavailable. Options may include a secondary fixed connection, 4G or 5G failover, diverse routing where available, or agreed procedures for diverting calls and enabling staff to work elsewhere.

The proportionate option will depend on the cost of downtime to the organisation. For a professional services firm, a short interruption may be manageable with call diversion. For a customer service operation or site handling time-sensitive logistics, a more resilient design may be justified. The key is to make that choice deliberately.

7. Confirm network design, Wi-Fi and security requirements

Voice quality relies on more than the external connection. Internal network equipment, Wi-Fi coverage, cabling, power provision and security policies all influence the experience for staff and callers. New layouts can create Wi-Fi dead spots, while poor network configuration can cause delayed or distorted calls at busy times.

Agree how voice traffic, guest access, business devices and secure systems will be separated and managed. If teams use meeting rooms for video calls, test coverage and capacity in those spaces rather than relying on a single signal reading at reception. This is also the point to check that remote workers can continue using the same communications tools securely.

8. Prepare staff, customers and key suppliers

Even a well-designed migration can feel disruptive if people do not know what is changing. Give staff a clear, practical briefing on new handsets, calling applications, login arrangements and support contacts. Keep the message focused on what they need to do and when.

Customers may not need to hear about the move at all if numbers and call handling remain unchanged. If opening hours, delivery instructions or physical visitor arrangements will change, update the relevant messages, directories and customer-facing materials in advance. Suppliers who call regularly should receive the correct new site details too.

9. Test before staff depend on the service

Testing should cover more than whether a dial tone is present. Confirm inbound and outbound calls, direct dial numbers, call queues, voicemail, transfers, emergency calling location information, internet performance, Wi-Fi coverage and any integrations with Microsoft Teams, CRM platforms or contact centre applications.

Use realistic scenarios. Ask a member of staff to take a customer call, transfer it to another colleague and access the necessary system while connected from the new office. Testing these everyday actions exposes issues that a basic technical check may miss.

10. Run move day with clear support and fallback plans

On move day, nominate people who can make decisions, keep the telecoms provider informed and communicate with staff. Have the escalation route, relevant account details and fallback arrangements available to the people on site. This avoids time being lost while teams search for information under pressure.

Once the office is occupied, monitor call quality, connectivity and user feedback closely for the first few days. Small adjustments to call flows, Wi-Fi placement or user settings can make a meaningful difference. A planned post-move review also confirms that old services have been ceased correctly and that no unnecessary lines remain active.

Make the move an improvement, not a repeat of the past

Relocation is one of the few times a business can review its communications estate without creating change for change’s sake. It is an opportunity to retain the numbers customers trust, remove legacy dependencies and put reliable connectivity in place for the next stage of growth.

With expert guidance, a clear timetable and support that remains available after the keys are handed over, the telecoms element of an office move becomes far less daunting. RPS Telecom helps organisations plan the transition around their operations, so their people can settle into the new space while conversations with customers continue as they should.