A phone system for UK law firms — built for the SRA file, not just the call.

What law firms actually need from a phone system.

Five things, in roughly the order they kill deals when they're missing:

1. Compliance call recording with the right retention. SRA-regulated firms record client instructions, court calls, and counsel conferences. Retention typically follows file-retention rules — six years for completed matters, longer for trust accounts, indefinite for some categories. The system needs configurable retention by extension or by call type, not one-size-fits-all.
2. UK data residency on those recordings. Recordings of regulated client conversations leaving UK soil complicates DPA / GDPR audit. Cleaner to keep everything UK-hosted. Standard SaaS providers default to EU regions; partner-managed 3CX with a UK partner gives you UK-resident hosting as default.
3. Call routing that maps to fee-earner availability. Solicitor X is at court Tuesday; Solicitor Y is in conference until 3pm; partner Z takes overflow on conveyancing calls. Reception needs a screen that reflects this and routes the call accordingly. Not "press 1 for residential, 2 for commercial" — actual people-state-aware routing.
4. Integration with the case management system. Click-to-call from Clio, LEAP, Iris, Quill, or LawWare. Screen-pop showing matter ID, fee earner, and matter type when an inbound number matches a client record. Call logged back to the matter automatically with duration and recording link.
5. Out-of-hours coverage that actually works. Partner phones ring through after hours. Conveyancing calls hit a duty solicitor's mobile. Family-law emergencies escalate via a defined call chain. Not voicemail-only after 5pm.

How 3CX maps to those needs.

3CX on PRO tier (the standard SME tier) covers the recording, routing, integration, and out-of-hours requirements directly. Specifics:

• Recording with retention controls: on-demand or always-on per-extension. Retention policy configurable globally or per-extension. Recordings encrypted at rest. Storage cost is your partner's hosting cost (negligible at GBP/GB scale for typical UK SME volume).
• UK data residency: partner-dependent. Port Phones hosts in DigitalOcean's London (LON1) data centre — recordings and call detail records never leave UK soil. Other UK 3CX partners may host elsewhere; ask before signing.
• Status-aware routing: 3CX presence states (Available, In Meeting, Out of Office, Away) drive call-flow designer logic. Reception switchboard shows fee-earner state in real time. Manual override for "Solicitor Y is in court today" without admin tickets.
• Case-management integration: 3CX PRO integrates with Clio, LEAP, Iris (via their CRM/screen-pop bridge), Quill, and any case-management system with a generic webhook or REST API. The integration is configured during week 3–5 of the implementation; depth varies by case-management vendor (Clio and LEAP have the deepest 3CX integration; Quill works via webhook).
• Out-of-hours call chain: 3CX's "Call Flow Designer" tool builds escalation chains visually. Inbound call after 5pm → ring duty solicitor's mobile for 25 seconds → escalate to senior partner if not answered → final fallback to overnight voicemail with email-to-client confirmation. Standard pattern.

Two firm profiles.

High-street firm, 8 fee earners, residential conveyancing + family.

Typical setup: 8–12 extensions, 8 SC PRO licence, single-site office, central switchboard with overflow to two reception staff. Compliance recording on all client extensions; partner extensions configurable. Out-of-hours overflow to duty mobile for completion-day calls. Integration with Iris or Quill for matter lookup.

Cost: roughly £80–120/month all-in including licence, hosting, SIP, support. Setup: roughly £1,200–1,800 for handsets and install. Compares to typical incumbent quote for this profile of £180–260/month all-in.

Mid-size commercial firm, 35 fee earners, commercial + property + employment.

Typical setup: 50–60 extensions including reception and support staff. 8 SC PRO (35 user count fits comfortably; some incumbents would over-spec at 24 SC). Multi-site if there's a branch office; central PBX with site-local SIP if needed. Compliance recording on all fee-earner extensions, retained for 6 years. Out-of-hours chain by department. Integration with LEAP or Clio.

Cost: roughly £200–280/month all-in. Setup: roughly £3,500–5,500 for handsets, install, porting, training. Compares to typical incumbent quote for this profile of £400–600/month all-in.

What doesn't apply (and you may be over-paying for).

Three features incumbent UK 3CX MSPs frequently quote into law-firm deals that often aren't justified:

• AI tier upgrade for transcription. AI call transcription is useful in contact-centre environments. In law firms, transcribed calls have an awkward evidential status — counsel commentary may differ from transcription; transcription becomes an accuracy liability. Most law firms stay on PRO tier and use call recording (the recording itself, not a transcript) as the audit artefact.
• Over-specified SC count. 35 fee earners with the firm's typical call density runs cleanly on 8 SC PRO. Some quotes sit at 24 SC PRO (£910/yr list vs £330/yr). The difference rarely affects call quality.
• Premium per-seat support add-on. "Premium support" at £1/user/month adds £35/month at 35 users for an outcome ("phones work, we fix when broken") that should be in the base service. Worth asking what changes if you decline.

Migration timing for law firms specifically.

Two practical points:

• Avoid completion-day weeks for cut-overs. Conveyancing firms typically aim for cut-overs in mid-month, mid-week, when completion volume is lowest. Avoid Fridays in busy completion months (December, end of tax year, end of stamp-duty windows). The actual cut-over takes a few hours but the team's attention is the bigger cost.
• Port practising numbers without disruption. UK number porting takes 2–4 weeks. The number doesn't change; the routing does. Clients calling your existing main switchboard or fee-earner direct dials get through throughout. We coordinate the LoA, the port date, and the cut-over weekend.

What an audit covers.

Free audit, no commitment. We look at: current monthly phone spend (your invoices, anonymised if you prefer), user count and split between fee earners and support staff, current case-management system, current SIP / line setup, any SRA file-handling expectations specific to your work types, and any in-flight compliance reviews. We produce a transparent quote on the honest-pricing template, and if managed 3CX isn't the right fit (very small firm, very large firm, atypical work mix), we'll say so.