The Shard with a tall building

BT Switch‑Off: Keep Phones,
Alarms & PDQs Working

  • Desk phones & analogue lines
  • PDQ payment terminals
  • Alarms, lift & door entry lines
  • Fax & legacy modems
  • Protect inbound calls & revenue
  • Plan number porting in advance
  • Avoid card machine outages
  • Stage upgrades with clear costs
  • Modern VoIP/Teams Phone & SIP
  • Fibre/leased lines & QoS design
  • Mobile failover & call continuity
  • Battery‑backed CPE where needed

WHAT’S INCLUDED

  • Inventory of lines, numbers, PDQs, alarms & dependencies
  • Risk report + recommended options (good / better / best)
  • Migration plan: timelines, number porting, downtime avoidance
  • Connectivity check: fibre/leased line options, SLAs, pricing
  • Continuity design: call routing, mobiles, failover & power
  • Clear costs & ROI—no vendor lock‑in

OUR PROCESS

Quick call + data capture. We review your current lines, numbers, PDQs and alarms.

We propose options with timelines, porting plan and continuity—priced and staged.

We handle the changeover, test everything, then support day‑to‑day with clear SLAs.

Tell us a few details and we’ll confirm a slot. No obligation, no pushy upsell—just a clear plan.
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  • Local, responsive and vendor‑agnostic
  • Access to multiple carriers via trusted partners
  • On‑site engineers across South London
  • Clear commercials, zero fluff
  • Support that sticks around after go‑live

Usually no—we port existing numbers to VoIP or Teams Phone and plan the cut‑over to avoid missed calls.

Yes—with the right adapters or IP replacements. We test and document each dependency in
the audit.

Typical SMBs complete in weeks, not months, depending on fibre/number‑porting lead times.

Yes—your team can take calls on desk phones, softphones or mobiles with consistent routing and policy.

Palace Prime IT

BT PSTN/ISDN Switch-Off — Client Audit

Use this audit to identify legacy PSTN/ISDN dependencies and plan the move to digital alternatives. Required fields are marked *.

1) Company Information

2) Current Telephony & Network

3) Business Continuity & Risks

4) Connected Devices & Services

Tell us whether each device relies on analogue (PSTN) or digital/IP connectivity.

5) Migration Readiness

6) Next Steps

We’ll only use your data for the purposes of this audit. For details, see our Privacy Policy.