From $48K to $19K Per Month: How a Multi-Site Manufacturer Rebuilt Its Network for a Fraction of the Cost

Manufacturing is one of the most network-dependent industries in the mid-market — and one of the most consistently overcharged for the infrastructure that dependency requires. The combination of legacy OT systems, multi-site geography, real-time production data requirements, and long-standing vendor relationships creates exactly the environment where telecom spend grows quietly, year over year, without anyone examining whether the architecture or the pricing still makes sense.

The client in this case study is a mid-sized manufacturer operating seven production and distribution facilities across three states. Total monthly telecom and connectivity spend at the time of engagement: $48,200. Monthly spend 90 days after engagement close: $19,100. Annual savings: $349,200.

Manufacturing organizations almost always tell us the same thing at the start of an engagement: we need reliable connectivity above everything else. What they discover during the audit is that reliability and cost are not a tradeoff. They had been paying a premium for a level of performance they were not actually receiving.

The pre-audit environment

At the time of our engagement, the client's network architecture had been built incrementally over 11 years — each facility added to the network as operations expanded, with minimal cross-site architectural planning. The result was a patchwork of contracts, carriers, and connectivity types that no single person in the organization fully understood:

• Five MPLS circuits connecting production facilities to corporate headquarters, ranging from $4,200 to $7,800 per month each — provisioned at bandwidth levels that had not been reviewed since original installation

• Two additional facilities running legacy T1 bonded circuits at $3,100 and $2,900 per month respectively — technology that had been effectively obsolete for cost purposes for several years

• Seven separate carrier relationships across the seven locations, each with its own contract, billing cycle, and support contact

• A corporate voice environment still running an on-premise PBX from 2013 with a SIP trunking overlay added in 2018 — the combined cost of maintenance, licensing, and trunking was $6,400 per month

• No centralized network monitoring — connectivity issues at production facilities were typically reported by production supervisors when systems slowed, not by proactive network management

The audit findings

Beyond the architectural inefficiencies, the forensic billing review surfaced additional waste: three of the five MPLS circuits were contracted for bandwidth that exceeded actual peak utilization by 60 percent or more; the two T1 bonded circuits were serving applications that had migrated to cloud-based platforms — the circuits were essentially idle billing lines; and one facility had been double-billed for local loop charges for 26 months, representing $14,300 in recoverable overcharges.

The redesigned architecture

Rather than a simple renegotiation of existing contracts, this engagement warranted a full architectural redesign. The new network was built around three core elements: a primary SD-WAN deployment with dual-carrier broadband at each of the seven facilities replacing the MPLS and T1 circuits; a cloud UCaaS platform replacing the on-premise PBX and SIP trunking hybrid; and a centralized network monitoring and management system that gives the IT team real-time visibility across all seven locations from a single dashboard.

The architectural consolidation also reduced the carrier relationships from seven to two — dramatically simplifying vendor management, billing reconciliation, and support escalation.

The financial outcome

Monthly spend reduction: from $48,200 to $19,100 — a 60 percent reduction. Annual savings: $349,200. One-time billing overcharge recovery: $14,300. Implementation timeline from audit kickoff to full cutover: 14 weeks. Network performance outcome: average latency between facilities improved by 40 percent; IT-reported connectivity incidents at production facilities decreased by 70 percent in the first 60 days post-cutover.

The CFO's comment: "We assumed that cutting telecom costs meant accepting service degradation. We were wrong on both counts — costs and service."

What manufacturers need to understand

If your manufacturing operation has more than three facilities and your network architecture has been built incrementally over more than five years, the architectural and pricing profile above is likely familiar. The prescription is the same: a forensic audit of contracts and invoices, a market benchmark of current connectivity options, and an honest architectural assessment of whether the current design still fits how the business operates.

Sigma Technology Consulting has specific experience with manufacturing network environments, including OT/IT convergence, production floor connectivity requirements, and multi-site WAN architecture. Contact us at sigmatechconsult.com to discuss what a Digital Plumbing Audit looks like for your facilities.