Zoom Phone & UCaaS Leadership (by GIS): Zoom Phone Migration by GIS (Immediate Cost Savings)

Finance teams now demand immediate, line-item proof of savings from telecom changes, not just projected run rates. That forces us to treat Zoom Phone migration as a controlled cost-cut program, not a pure IT refresh. The shift is moving from scattered carrier contracts to a single, metered Zoom Phone environment with clear ownership, clear support paths and real-time cost visibility. IT, workplace and finance need a shared view of users, numbers and usage so we can tie every ported line to a specific budget reduction.

• You can show exact monthly savings as soon as legacy trunks and circuits are decommissioned.
• You reduce support tickets by collapsing multiple PBX and carrier workflows into one supportable stack.
• You tighten forecasting because call volume, licensing and growth are visible in one dashboard.
• You cut onboarding and offboarding time by standardizing number assignment and device setup.

Instead of renewing legacy voice contracts by default, we map every DID, hunt group and site to a Zoom Phone plan with a clear owner. GIS runs an inventory and builds a migration matrix that ties each line to a cost center, replacement path and cutover date. IT then ports numbers in batches, decommissions circuits on a fixed schedule and updates documentation, diagrams and runbooks as each site flips. Support teams handle voice issues through a single Zoom-focused help flow, which removes guesswork about which carrier or box is at fault. Finance gets a clear before-and-after view: old carrier invoices versus Zoom licensing and metered usage for the same users, and locations.

This week, have IT and finance sit down with GIS to list the first 20% of lines that can move to Zoom Phone, and be decommissioned within 60 days.

• Request a complete voice inventory and cost export from all existing carriers.
• Engage GIS to translate that inventory into a phased Zoom Phone migration and decommission plan.
• Assign clear internal owners for user provisioning, number management and support escalation.
• Schedule site-by-site cutover windows and lock in circuit disconnect dates tied to each phase.