Global PSTN & Connectivity

Connect the world locally.

Deploy voice, numbering, and connectivity across global markets with local compliance, resilient routing, and direct carrier relationships.

Built on UCT's own infrastructure and direct telecom partnerships, supporting global multi-national organisations.

The challenge

Global communication is fragmented.

Organisations end up with a patchwork of solutions that increase cost, risk, and operational complexity.

What looks like a procurement problem is, beneath the surface, a design problem.

Where it shows up
  • 01
    Inconsistent country availability.
    Numbering, porting rules, and feature support differ in every market, leaving gaps where the business cannot operate.
  • 02
    Regulatory complexity.
    Recording, residency, and emergency-services obligations vary jurisdiction by jurisdiction and change without warning.
  • 03
    No local presence.
    Without in-country routing, calls take longer paths, quality degrades, and compliance becomes difficult to demonstrate.
  • 04
    Multiple providers, multiple contracts.
    Each region brings its own carrier, SLA, and account team, multiplying overhead at every layer.
  • 05
    Inconsistent routing and call quality.
    Customers in one country experience the brand differently than customers in another, for reasons no one in the business can see.
  • 06
    Vendor-led limitations.
    Coverage is shaped by what the provider can resell, not by what the business needs in each market.
The shift

From fragmented connectivity to designed global architecture.

Connectivity stops being something you procure and starts being something you architect, aligned to the platforms, regulators, and markets the business actually operates in.

Old

Procure numbers country by country.

New

Design a global voice architecture aligned to compliance, routing, and business operations.

What makes UCT different

Architecture, not resale.

UCT delivers connectivity through its own infrastructure and direct carrier relationships.

Direct Telco Relationships

Connectivity delivered through direct carrier partnerships, ensuring control, quality, and compliance.

Own Infrastructure

Datacentre presence across key regions supporting routing, resilience, and local breakout.

Global Multinational Experience

Designed and deployed for organisations operating across multiple countries and regulatory environments.

  • 04Architecture-Led ApproachConnectivity designed as part of a wider communication and CX strategy.
Global reach

A global network with local precision.

Our coverage combines in-country presence with global reach, enabling organisations to deploy voice services across regions without compromising compliance or performance.

Global PSTN

Global PSTN reach

Coverage, numbering, and routing for multi-market voice.

  • 73+ PSTN countries
  • 160+ numbering countries
  • Resilient routing
11
Primary in-country locations
UK � Frankfurt � Amsterdam � UAE � Saudi Arabia � Bahrain � Kuwait � India � Kenya � Nigeria � South Africa
73+
PSTN coverage countries
Direct local breakout where it matters most.
160+
International numbering countries
Geographic, mobile, toll-free, and non-geographic.
Region 01

Saudi Arabia

In-country routing and recording for organisations operating under CITC obligations.

Region 02

United Kingdom

A core European hub with carrier-grade voice routing and number management at scale.

Region 03

Frankfurt

Central European POP supporting EU data residency, redundancy, and onward routing.

Capabilities

Connectivity, end to end.

UCT specialises in engineering Emerging Markets Voice where network conditions are less predictable and quality has to be designed in.

Leveraging the Opus Codec, an adaptive bitrate codec that responds to changing bandwidth and packet conditions, we deliver strong voice quality in some of the most challenging parts of the world.

  • 01
    PSTN coverage across 73+ countries.
  • 02
    International numbering across 160+ countries.
  • 03
    In-country call recording where supported.
  • 04
    SMS enablement.
  • 05
    Fax-to-email.
  • 06
    Intelligent routing and failover.
  • 07
    BYOC, Direct Routing, and SIP integration.
Voice quality stack
  • 01

    Emerging Markets Voice

    Engineered for regions where routes, carriers, bandwidth, and regulation vary market by market.

  • 02

    Opus adaptive bitrate

    Opus adjusts to changing network conditions, helping preserve speech quality on constrained links.

  • 03

    Quality-first routing

    Regional breakout, carrier choice, and failover paths are designed around the quality users hear.

Integrated platforms

Integrated with leading communication platforms.

Voice and connectivity flow into the platforms your business already runs on, through native, supported integration models and the right platform partnerships and integration models.

01

Microsoft Teams

Direct Routing and Operator Connect models that bring UCT voice into the Teams estate without re-engineering it.

02

Zoom

BYOC and Zoom Phone Provider integration aligned to the way Zoom-led organisations already operate.

03

Webex

Local Gateway and Cloud Connected PSTN models for Webex Calling environments across regions.

  • 04SIP PlatformsNative SIP integration for contact centre, UC, and platform estates that don't live inside a single vendor.
Architecture in practice

How the architecture holds together.

A modern global voice architecture is not a list of features. It is a deliberate set of relationships between platforms, carriers, datacentres, and policy.

Each layer is designed to support the others, so the experience a customer hears in one country matches the one heard in another, and the business behind both stays compliant.

  • 01
    Centralised control.
    One operating model across regions, with a single source of truth for routing, identity, and policy.
  • 02
    Regional breakout.
    Calls land where they need to: locally where compliance demands it, globally where efficiency wins.
  • 03
    Compliance routing.
    Recording, residency, and regulatory rules built into routing decisions, not bolted on after.
  • 04
    Redundancy across POPs.
    Failover, geo-resilience, and quality protection across UCT's datacentre footprint.
  • 05
    Platform integration.
    Voice flows into Teams, Zoom, Webex, and SIP estates without re-engineering each market.
AI & Workflow Integration

Connectivity that feeds the rest of the business.

Voice events are no longer isolated. With the right architecture, every call becomes a signal the business can route, record, and act on automatically.

Connectivity becomes a source of operational intelligence, not just a dial tone.

What integration enables
  • 01
    Call events trigger CRM updates
  • 02
    Compliance enforcement (e.g. DNC) at the routing layer
  • 03
    Real-time notifications across teams and systems
  • 04
    Automation workflows tied to call outcomes
Practical impact

One global architecture. Different value for every role.

The same connectivity foundation delivers a different kind of confidence to the people on the call, the teams running the platform, and the leaders accountable for it.

For End Users

Consistent calling experience globally.

  • 01
    Same dial plan everywhere
  • 02
    Local presence in every market
  • 03
    Predictable call quality
  • 04
    No regional surprises
Where it applies

Where this matters most.

Industry - Banking

Maintain compliant local voice services while keeping global communication architecture manageable.

  • 01
    Local presence
    Provide trusted local numbers and in-country access for customers and relationship teams.
  • 02
    Regulatory fit
    Align recording, retention, routing, and number rules to each market requirement.
  • 03
    Routing quality
    Use carrier and regional routing choices that protect call quality and resilience.
Why this is hard

Global voice is not a procurement exercise.

Each layer compounds the next. Misjudging one aspect, whether regulation, routing, or integration, shows up everywhere downstream.

  • 01
    Regulation.
    Each jurisdiction has its own rules, and they change.
  • 02
    Number availability.
    Some numbers cannot be ported, ordered, or held without local entity status.
  • 03
    Routing quality.
    Path, peering, and carrier choice all decide what the customer hears.
  • 04
    Multi-platform integration.
    Teams, Zoom, Webex, and SIP estates each demand a different integration model.
  • 05
    Regional variation.
    Behaviour, expectation, and dialing convention differ market to market.
  • 06
    Data residency.
    Recording and call data must stay where the law requires.
The UCT Advisor Layer

UCT designs connectivity around your business.

Our team brings the strategy, design, integration, and operations experience that turns a global voice ambition into a working architecture, across markets, regulators, and platforms.

  • 01
    Define global strategy
  • 02
    Design architecture
  • 03
    Integrate platforms
  • 04
    Support operations

Connectivity alone is not enough. The architecture behind it determines its value.

Business impact

What changes when connectivity is designed.

When global voice is treated as architecture instead of procurement, the business sees compounding benefits across speed, compliance, quality, and scale.

Outcome 01

Faster expansion

Enter new markets in weeks, not quarters.

Outcome 02

Reduced risk

Compliance and resilience built into the foundation.

Outcome 03

Better quality

In-country routing and direct carrier relationships.

Outcome 04

Lower complexity

One architecture replacing many contracts.

Outcome 05

Consistent experience

Customers and employees feel the same brand everywhere.

Outcome 06

Scalable operations

A foundation that grows with the business.

The next step

Global communication should not be a constraint.

UCT connects infrastructure, carriers, and platforms into one structured global communication architecture.

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