Glossary of Terms - SIP Trunks

About us
The Exponential-e Group
Exponential-e, Vysiion, Xpertex, EXPO.e and EXPO.e Networks.
3,000+ companies depend on Cloud, Connectivity, Unified Communications, Managed IT, and Cyber Security services from the Exponential-e Group.
FIND OUT MORE
Who we are
Contact Us
Smart Wires: VPLS
London Connectivity
Meet the Leadership Team
Careers & partners
Partner with us
Careers
Vacancies
Trust & compliance
Our Network
Customer Service Promise
Our Accreditations & Awards
Environmental, Social, & Governance
Interactive brochureDiscover the Exponential-e differenceExplore our interactive brochure to learn more about our network, people, capabilities and customer outcomes.
Live Net Promotor Score83 24 / 7 SupportUK Service Desk UK Sovereign Infrastructure Accreditations9 ISO Certifications Customers3,000+ Organisations
Core services
Connectivity Services
Secure, resilient connectivity that keeps your business moving.
High-performance, secure network solutions designed to connect your people, sites and clouds.
Pages in this category
Secure Connectivity
Business Internet and Leased Lines
Software Defined WAN (SD-WAN)
Wide Area Network (WAN)
Managed LAN & Wi-Fi
IoT SIM - 4G Data Services
Public Cloud Connectivity
Global Managed LEO - Satellite Broadband
HSCN Services
FIND OUT MORE
Common pain points we help solve
Unreliable connectivity impacting productivityKeep teams, branches and cloud services connected with resilient, high-performance networks.
Rising network costs and legacy contractsModernise WAN, internet and access services without losing control.
Security risks across sites and remote usersProtect data in transit across every location and connection.
Poor visibility of network performanceImprove insight, reporting and operational control across your estate.
Complex supplier managementConsolidate connectivity through a single accountable partner.
Cloud Services
Cloud Services built around control, performance and resilience.
Modern Cloud platforms designed for control, performance and growth.
Pages in this category
Microsoft Azure Managed Services
Hybrid Cloud Solutions
Azure Local
VMware Cloud Services
Virtual Data Centre - IaaS Services Colocation Hosting Services
Enterprise Cloud Backup
Cloud Object Storage
Enterprise File Services: Storage Gateway
Disaster Recovery as a Service (DRaaS)
Online Backup
Dedicated Backup
VDI Solutions
FIND OUT MORE
Common pain points we help solve
Cloud cost and consumption uncertaintyImprove control, governance and predictability across Cloud platforms.
Legacy infrastructure restricting agilityModernise applications and workloads with secure hybrid foundations.
Data sovereignty and compliance pressureKeep critical data governed, protected and in the right jurisdiction.
Resilience and recovery gapsStrengthen backup, disaster recovery and business continuity.
Platform complexity slowing transformationSimplify migration, operations and optimisation with expert support.
Data & AI
Data and AI foundations for secure, responsible innovation.
Trusted data and sovereign AI foundations for measurable outcomes.
Pages in this category
Cloud Sovereignty - Trust your infrastructure. Retain control of your data
AI Horsepower - Sovereign AI Platforms, Built for Secure Intelligence at Scale
FIND OUT MORE
Common pain points we help solve
AI pilots struggle to scale securelyCreate sovereign, enterprise-grade foundations for trusted AI.
Fragmented data limits insightConnect, govern and prepare data for meaningful business outcomes.
Governance slows AI adoptionBuild secure, controlled and compliant AI operating models.
Unclear AI business casesPrioritise practical use cases that deliver measurable value.
Infrastructure lacks AI horsepowerBring compute, storage and networking closer to critical data.
Live Net Promotor Score83 24 / 7 SupportUK Service Desk UK Sovereign Infrastructure Accreditations9 ISO Certifications Customers3,000+ Organisations
Industries
Live Net Promotor Score83 24 / 7 SupportUK Service Desk UK Sovereign Infrastructure Accreditations9 ISO Certifications Customers3,000+ Organisations
Resources
Insights that drive change.
Find guides, case studies, articles, events and expert perspectives.
Browse resources
Blog
Events
Press Releases
In the Media
Expert Insights
Video Hub
Case Studies
Glossary of Terms
Digital Transformation Model
Latest BlogWhy it’s time to bring network security to the userThe way we connect, communicate, and collaborate continues to evolve, with hybrid working now firmly established across the public and private sector…Read Blog Working with our customersMaking healthy meals accessible across the entire UK through highly scalable, high-performance Cloud infrastructureThe Customer The customer delivers more than 100-million meals to households across the UK each year. Their unique subscription-based service provide…Read Case Study In the NewsNPIC onboards UCLH neurology onto the UK’s first national digital pathology platformNHS consortium champions AI research enabling faster, more accurate cancer diagnosis to improve patient outcomes The National Pathology Imaging Co-op…Read News
Live Net Promotor Score83 24 / 7 SupportUK Service Desk UK Sovereign Infrastructure Accreditations9 ISO Certifications Customers3,000+ Organisations

BOOK A MEETING

Term	Definition
SIP Trunks	Session initiation protocol (SIP) trunks act as a bridge between a PBX and the public telephone network. If a client has their own PBX and we are supplying them with connectivity, then staff making calls would reach the public telephone network via a SIP trunk that connects to our core network. For example, if a client wanted to make a call then the call data would go from their VOIP phone to their PBX using the local network. The data would then travel from the PBX to the exponential e core network via the EDD and from the core network to the public telephone network via SIP.

About us
Connectivity Services
Cloud Services
Data & AI
- Cloud Sovereignty - Trust your infrastructure. Retain control of your data
- AI Horsepower - Sovereign AI Platforms, Built for Secure Intelligence at Scale
Cyber Security Services
Unified Communications
Contact Centre
IT Services
Industry
Resources
Expert Insights
[EVENT] 22-10-26 IA at Scale - Ham Yard Hotel
[EVENT] 22-10-26 IA at Scale - Ham Yard Hotel - Registration Success

▲

Who we are

Careers & partners

Trust & compliance

Secure, resilient connectivity that keeps your business moving.

Pages in this category

Common pain points we help solve

Cloud Services built around control, performance and resilience.

Pages in this category

Common pain points we help solve

Data and AI foundations for secure, responsible innovation.

Pages in this category

Common pain points we help solve

Cyber Security services that strengthen resilience at every layer.

Pages in this category

Common pain points we help solve

Unified Communications that help people work better together.

Pages in this category

Common pain points we help solve

Contact Centre solutions that improve every customer interaction.

Pages in this category

Common pain points we help solve

IT Services that simplify operations and improve control.

Pages in this category

Common pain points we help solve

Technology outcomes for AEC.

Common pain points

Technology outcomes for Critical National Infrastructure.

Common pain points

Technology outcomes for Defence.

Common pain points

Technology outcomes for Digital Pathology.

Common pain points

Technology outcomes for Education.

Common pain points

Technology outcomes for Emergency Services.

Common pain points

Technology outcomes for Finance.

Common pain points

Technology outcomes for Government.

Common pain points

Technology outcomes for Healthcare.

Common pain points

Technology outcomes for Hospitality & Leisure.

Common pain points

Technology outcomes for Insurance.

Common pain points

Technology outcomes for Manufacturing.

Common pain points

Technology outcomes for Legal.

Common pain points

Technology outcomes for Retail.

Common pain points

Technology outcomes for Higher Education.

Common pain points

Technology outcomes for Life Sciences.

Common pain points

Technology outcomes for Water Companies.

Common pain points

SIP Trunks

Glossaries

About Us

Services

Industry

Terms

London Head Office

Manchester Office

Sales: 0845 470 4001

Support Portal Login

Service & Support: 0800 130 3365

London Head Office

Manchester Office

Register your interest now

Register your interest now

Register your interest now

Reserve Your Spot Today

AI Strategy, Roadmap & Operating Model

AI Platforms, Data & Architecture

AI Use Cases, Agentic AI & Business Transformation

Trusted AI, Security & Governance

Register your interest now