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Professional Services · Case Study

Zero-downtime landline migration for a multi-partner professional firm

A law and advisory practice with 14 staff moved from copper landlines to ClearConverse VoIP across two suites - custom partner routing, eFax, and recording - with guided change management.

$2,100
Monthly savings
vs prior landline + fax line costs
0
Client-visible outages
Across staged cutover
2 days
Staff training window
Hands-on before go-live
100%
Fax digitized
Paper machine retired

Legacy Centrex lines could not follow partners between offices or home offices. ClearConverse executed a phased VoIP migration with white-glove training, partner-specific ring strategies, and digital fax - so client calls always reached a professional answer.

Background

Harbor & Lane Consulting provides legal and business advisory services. Partners expected desk phones to behave like a single firm - even when working from the satellite suite or home. Their legacy landline contract was expensive, inflexible, and offered no meaningful mobile story.

Business challenges

  • Separate landline contracts per suite with no shared visibility or transfer between offices.
  • Reception could not see partner availability; calls bounced or went to individual voicemails.
  • Physical fax machine still required for court and opposing counsel workflows.
  • Partners feared VoIP would mean dropped calls and 'sounding unprofessional' on mobile.
  • No path to add extensions without truck rolls and hardware purchases.

Objectives

  • Migrate without losing published numbers clients already knew.
  • Present one firm brand on inbound calls regardless of which suite answered.
  • Enable partner mobile reachability with business caller ID.
  • Replace paper fax with tracked digital delivery.
  • Train non-technical staff until confidence was high - not just go-live day.

Our approach

ClearConverse ran executive workshops explaining VoIP vs landline behavior, then built a ring strategy that honored partner preferences (simultaneous ring for urgent matters, sequential for general intake). Number porting was sequenced suite-by-suite with parallel run on new handsets before disconnecting copper. eFax replaced the machine with email delivery and audit trails.

Implementation

Phase 1Week 1

Requirements & stakeholder alignment

Partner interviews captured call handling preferences, confidentiality concerns, and fax recipients. Documented every published number and directory listing.

Phase 2Week 2

Network & handset readiness

Validated internet QoS at both suites. Deployed business-grade desk phones and softphone profiles on partner laptops.

Phase 3Week 3

Suite A port & parallel run

Ported primary firm line; ran legacy and Cloud PBX in parallel for 72 hours. Reception trained on blind and attended transfer.

Phase 4Week 4

Suite B port & unified IVR

Extended shared auto-attendant with partner directory and matter-type prompts. Disabled legacy trunks.

Phase 5Week 5

eFax & recording policies

Migrated fax numbers to digital delivery. Enabled selective call recording on client-facing lines with retention guidance.

Solutions deployed

ClearConverse Cloud PBXSIP trunkingRing groups & partner directorieseFax send/receiveCall recordingMobile softphone

Technical highlights

  • Shared firm auto-attendant with dial-by-name directory for partners.
  • Simultaneous ring to desk + mobile for designated practice leads.
  • Digital fax with delivery confirmation to matter admin inboxes.
  • Music on hold and professional greetings recorded and approved by partners pre-launch.
  • CrystalQore UC for internal chat during document-heavy matters.

Business impact

  • Partners work from either suite or home without giving clients a different number.
  • Reception presents a single professional front door with visibility into availability.
  • Firm leadership reinvested line savings into additional CrystalQore seats.
  • Months post-migration, firm reports zero regret on the VoIP decision.

We have zero complaints in going from landlines to VoIP with ClearConverse. Daniel was very helpful and patient with us as he walked us through the process and explained the differences. He customized the system to perfectly suit our needs.

Managing Partner, Harbor & Lane Consulting

Composite narrative informed by verified ClearConverse customer outcomes and Google reviews.

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FAQ

Common questions

Parallel testing ran two weeks; full cutover completed in four weeks with zero client-visible downtime on published numbers.

Discuss a rollout like Harbor & Lane Consulting

We'll map your voice, routing, and AI requirements - then build a phased plan with ClearConverse engineers.