Carrier-grade voice in Europe, delivered in months, not years

A global enterprise CX platform needed 99.99% uptime and in-jurisdiction data processing for regulated European customers. SignalWire’s Dedicated Real-Time Region made it possible, without years of in-house engineering.

99.99% availability SLA achieved
3–7 yrs build time avoided
+59 enterprise customers gained
~22 min max downtime per year

The Challenge

A voice platform gap that threatened enterprise growth

Shared cloud SLA ceiling

Prior shared EU infrastructure capped availability at 99.95% (over 4 hours of potential downtime per year). Not acceptable for tier-1 carriers.

Data residency mandates

Enterprise customers in Germany and Spain required voice signaling and media to stay within their national borders, a hard regulatory requirement.

Build vs. buy dilemma

In-house development would have consumed 3–7 engineering years, delaying market entry and straining resources across core product work.

Four-nines uptime. Enterprise contracts won. Years of build time saved.

Before: Shared Cloud

99.95% availability ceiling — over 4 hours of potential downtime per year
No path to single-tenant isolation
Voice traffic crossed jurisdictional boundaries
3–7 years of internal platform engineering required
Enterprise contracts at risk
Support escalations consumed engineering time

After: Dedicated Real-Time Region

99.99% availability — roughly 22 minutes maximum downtime per year
European voice launched in months, not years
Tier-1 carrier wins and tens of thousands of agents onboarded
Latency and packet loss reduced through in-region processing
Support escalations dropped with proactive monitoring
A scalable blueprint for future dedicated-region customers

A Dedicated Real-Time Region: Single-Tenant, In-Country

1. Single-tenant isolation

All signaling and media processing moved inside the customer’s own dedicated region, eliminating noisy-neighbor interference and delivering consistent performance at high call volumes.

2. Bring-Your-Own-Carrier SIP integration

Enterprise clients retained their existing carriers via BYOC SIP trunks, removing porting costs and migration friction while gaining SignalWire’s programmable call control.

3. Controlled change management

The dedicated infrastructure aligned release cycles and maintenance windows with the customer’s schedule, replacing ad-hoc updates that had previously broken call flows.

4. Second Frankfurt region for in-country residency

Added to satisfy Deutsche Telekom’s requirement that data never leave Germany, opening the door to one of Europe’s largest carrier relationships.

Recovery is automatic

Non-fatal errors trigger recovery phrases automatically. The caller may never notice. Fatal errors execute graceful shutdown with a hangup hook that captures final state for debugging.

Sigmond Runs on SignalWire

A voice and video AI agent built on the SignalWire SDK, wired to a live knowledge base, able to see what you show him. Build the same thing on voice, phone, WhatsApp, or SIP, or an entire white-label platform with SignalWire as the network underneath.

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