We advise enterprise and public-sector buyers through platform selection, carrier and number strategy, AI voice deployment, and the compliance posture that keeps a modern communications estate audit-ready.
1.4M+
Monthly minutes & messages under management
40k+
Seats migrated to cloud voice platforms
6
UCaaS/CCaaS/CPaaS platforms in active practice
24/7
Cutover command-center coverage
Vendor-neutral by design, fluent in the platforms your RFP names.
Twilio
CPaaS · Programmable voice, SMS, Verify
Nextiva
UCaaS · SMB & mid-market voice estates
Zoom Phone
UC · Meetings-native calling & CX
RingCentral
UCaaS/CCaaS · Global carrier footprint
Genesys / Five9
CCaaS · Contact center orchestration
Microsoft Teams Phone
Direct Routing & operator connect
Platform names are referenced to describe technical experience. LexLin Consulting is an independent advisory firm and is not affiliated with or endorsed by these providers.
Voice + Business SMS
One number, one identity — softphone calling alongside compliant A2P messaging threads.
AI Voice Agents
Intent capture, resolution, and containment scoring on every conversation.
Estate Analytics
Volume, handle time, MOS, and queue health tracked against SLA commitments.
SIP trunking, session border controllers, LCR, number inventory, porting waves, and E911 compliance mapped to a migration runbook with zero-dial-tone-loss cutovers.
Speech-to-speech voice agents, intent-driven IVR replacement, RAG-grounded answers, and warm human handoff with full transcript context.
A2P 10DLC brand and campaign registration, short-code strategy, TCPA-safe consent flows, RCS readiness, and deliverability instrumentation across carriers.
Real-time transcription, sentiment and QA scoring on 100% of interactions, plus FedRAMP/HIPAA-aware data handling and vendor scorecards for procurement.
01
Traffic, seat, and carrier baseline; MOS and QoS telemetry; contract and compliance review across current providers.
02
Target-state design, platform scorecard, AI deflection model, porting plan, and total-cost model with procurement-ready requirements.
03
Cutover command center, AI agent tuning, QA scoring, and quarterly vendor governance against SLA and containment targets.
We don't stop at the recommendation — we design it, build it, and cut it over.
Dial plans, call flows, IVR trees, queue and skill design, number inventory, and SBC/SIP topology documented as build-ready low-level design.
LAN/WAN and SD-WAN assessment, QoS marking, codec selection, bandwidth modeling, and pre-deployment MOS/jitter validation per site.
Tenant, trunk, PBX, and contact center configuration; hunt groups, routing rules, voicemail, e911 address mapping, and device provisioning at scale.
CRM, ticketing, and ERP screen-pop and click-to-dial, webhook pipelines, SSO/SCIM provisioning, and CDR/analytics data feeds.
UAT scripts, pilot waves, LNP porting coordination, day-one command center, hypercare, and rollback plans that protect dial tone.
Agent and admin training, runbooks, monitoring and alerting, change control, and quarterly optimization against SLA and containment targets.
Our own engineers write the software that fills the gaps your platform leaves.
LexLin maintains an internal product and engineering team. When an estate needs something no vendor ships out of the box, we build it — designed, coded, tested, and supported in-house, with source and documentation handed to your team.
How we build
React, TypeScript, Node, Python, and Postgres on cloud-native infrastructure.
How we ship
Two-week iterations with demo, UAT, and versioned releases.
How we secure
SSO, least-privilege roles, encryption in transit and at rest, audit trails.
How we hand off
Source, runbooks, and training — or a managed support retainer.
Evaluating a VoIP, contact center, or messaging award?
Request a Communications Briefing