# 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.

## Call recording

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## Bring carrier-grade voice to your enterprise platform.

Get 99.99% availability, regional data residency, and single-tenant infrastructure without years of in-house engineering.