Services

VoIP & Communications

Modern business voice and unified communications on platforms your team already lives in. We migrate legacy PBX environments to Microsoft Teams Phone and cloud-based VoIP, and we handle the carrier, the devices, and the dial-plan so your team does not have to.

Talk to us about voip & communications Related case studies

What's included

Three things we focus on.

Microsoft Teams Phone

Direct Routing or Calling Plans. Number porting, dial-plan design, auto-attendants, call queues, and device provisioning. Your team makes calls from the same app they use for everything else.

Legacy PBX migration

Structured migration from on-prem PBX systems with a parallel-run period so no call is dropped during cutover. We handle the carrier coordination and the end-user transition.

Contact center integration

CCaaS integration with Teams for organizations that need formal call-center capability alongside everyday voice: routing, reporting, and agent experience in a single platform.

How we engage

Whatever shape fits the work.

VoIP readiness assessment

Network assessment, carrier inventory, and a migration plan before any number is ported.

Teams Phone rollout

Full deployment: licensing, Direct Routing or Calling Plans, devices, dial-plan, and end-user onboarding.

PBX decommission program

Phased migration off on-prem PBX with cutover milestones and a defined decommission date.

Common use cases

What we get asked to do.

Migrate a multi-site legacy PBX to Microsoft Teams Phone
Deploy Teams Phone Direct Routing with a third-party SIP carrier
Design and configure auto-attendants, call queues, and hunt groups in Teams
Conduct a network readiness assessment before a Teams Phone deployment
Port existing phone numbers from a legacy carrier to Teams Calling Plans
Integrate a CCaaS contact center platform with Microsoft Teams
Provision and configure desk phones and Teams-certified headsets for a deployment
Train end users and IT administrators on Teams Phone administration and troubleshooting

Why Nextekk

What we bring to voip & communications.

Teams Phone specialists, not generalists

We have designed and deployed Direct Routing, Calling Plans, auto-attendants, call queues, and Teams-integrated contact centers across multiple enterprise deployments. This is not a first implementation for us.

Carrier coordination is included

Number porting, PSTN connectivity, and the relationship with the carrier are part of the engagement. Clients do not get passed between vendors at the most complex part of the migration.

Parallel-run migrations only

We run legacy PBX and Teams Phone in parallel with rollback available at every stage. No call is dropped during the migration. The cutover is straightforward because the parallel run already proved it works.

User adoption is a deliverable

A voice platform the team does not use has delivered nothing. Device provisioning, user training, call-quality monitoring, and a post-cutover adoption check are part of every engagement, not optional extras.

Business value

What clients typically see.

30% average reduction in monthly telephony costs when migrating from legacy PBX to Teams Phone with Calling Plans

95%+ call quality score on properly configured Teams Phone deployments with compliant network infrastructure

2-4 weeks typical cutover timeline from legacy PBX to Teams Phone when the parallel-run period is completed cleanly

40% reduction in IT support tickets related to voice after moving to a single unified Teams-based communications platform

Ready to talk about voip & communications?

Tell us what you are trying to change. We will either be useful, or point you to who would be.

Start a conversation