Voice infrastructure that connects your business across borders.
Madrid Integration Services delivers SIP trunking, global DID routing, and carrier-grade voice termination across the USA, UK, Canada, Australia, Germany, and China — engineered for clarity, compliance, and continuity.
6
Core countries with established voice presence
24 / 7
Network operations & incident response
FCC
Approved and compliant in the United States
SIP / RTP
Standards-based interoperability
FCC Approved
ITU-T Aligned
STIR / SHAKEN Aware
SIP RFC 3261
G.711 / Opus
24/7 NOC
Core service strengths
A focused portfolio for serious voice operations
Every service is built around the same priorities: stable signalling, high-fidelity media, and predictable behaviour under load.
SIP Trunking
Carrier-grade SIP trunks engineered for voice quality, with concurrent channel scaling and codec flexibility for clear conversations on every call.
Global DID Routing
Local numbers across six core markets with intelligent routing rules, geographic failover, and inbound call delivery tuned for response time.
Voice Termination
Direct interconnects and curated A-Z routes that prioritise post-dial delay, ASR, and audio fidelity over raw cost optimisation.
Number Provisioning
Bulk number requests, port-in management, and lifecycle tracking handled through dedicated provisioning support, not a self-serve void.
Failover Architecture
Redundant signalling paths, geographically distributed media servers, and active-active routing logic to keep voice flowing during incidents.
Compliance-aligned Telephony
Service design that respects FCC, regional, and customer-specific compliance constraints — including STIR/SHAKEN-aware call origination.
Global coverage
Six markets. One coherent voice network.
We operate where your customers, agents, and partners already are — with local numbering, regional routing, and consistent service behaviour.
United States
USAFCC-aligned routing & DID inventory
United Kingdom
UKOfcom-compatible numbering
Canada
CANNorth American interconnects
Australia
AUSAPAC voice termination
Germany
DEUBNetzA-aware operations
China
CHNInbound & outbound voice paths
Operating principle
Local numbers, global routing, consistent quality.
Cross-border telephony is rarely a clean problem. Customers expect a familiar local number, regulators expect provable compliance, and agents expect crisp audio. Our network is shaped around those three expectations holding simultaneously.
- Direct interconnects in priority regions
- Standards-based SIP and codec support
- Configurable routing logic for inbound and outbound
- Active monitoring of post-dial delay and audio quality
Reliability, compliance & routing quality
Carrier-grade behaviour under the conditions that matter
Voice traffic is unforgiving. A network that performs in a lab is not the same as one that performs at 2 a.m. during a regional carrier event.
01
Routing built for clarity
We route on quality signals — ASR, PDD, MOS — and weight cost as a secondary input. Every leg of a call is evaluated against measurable thresholds.
02
Redundancy designed in
Signalling, media, and interconnect layers each have independent failure modes and independent fallback paths. No single component is a hard dependency.
03
Compliance treated as default
FCC approval anchors our US operations; international service is delivered in line with regional telecommunications expectations and customer obligations.
Why businesses choose Madrid Integration
A telecommunications partner, not a reseller dashboard.
Our customers don't want a portal to log into and a number to forget. They want a voice partner who answers, configures, and stays accountable.
Reliability you can plan around
Voice paths are designed with redundancy at the signalling, media, and interconnect layers so a single failure never silences a customer line.
Engineering-led support
Tickets are answered by people who understand SIP, codecs, NAT traversal, and the realities of cross-border calling — not by scripted first-line agents.
Compliance as a baseline
FCC approval and adherence to regional telecommunications rules are treated as the floor, not the ceiling, of how the network is operated.
Ready to talk
Bring us your routing requirements, numbering plan, or migration timeline.
Whether you're rolling out international DIDs, hardening a contact-center voice path, or migrating off a legacy carrier, our engineers will walk through the architecture with you before anything is signed.