Exponential-e Ltd

Hosted Telephony Unified Communications and Collaboration

Exponential-e's Hosted PBX & Unified Communications and Collaboration Service provides users with Private Branch Exchange (PBX) functionality from our centralised, resilient voice application servers. Our Hosted PBX Service is a Cloud-based Unified Communications Service which is delivered over our business-only, reliable and low latency network.


  • Integrated Unified Communications suite: presence, chat, voice, video, collaboration tools
  • Single-identity synchronised across multiple devices: deskphone, computer, mobile and tablet
  • High quality HD Audio and Video
  • N-Way Audio and Video conferencing
  • Feature-rich, full PBX replacement solution
  • O365 / Outlook Integration
  • Seamless-transition. Start calls on your deskphone and transition to mobile
  • Chat and share information with multiple colleagues (file-transfer and desktop-sharing)
  • Call Reporting, Recording and Call Centre features
  • Remote Access to call management features from any device


  • Reduce CapEx with a full end to end managed solution
  • Improve productivity through an intuitive and collaborative interface
  • Business continuity underpinned by robust SLAs
  • Faster, more efficient decision making through more effective communication tools
  • Save time and travel costs by introducing UC applications
  • Future-proof solution, continually updated through central upgrades and development
  • Flexible capacity that scales as required, growing with your business
  • Ensure user adoption with a friendly easy to use interface
  • User mobility enabling users to work from anywhere
  • Reduce cost of calls between offices, home-workers and mobile-workers


£1.00 per licence per month

Service documents


G-Cloud 11

Service ID

3 8 4 9 4 1 0 0 7 9 8 7 0 8 5


Exponential-e Ltd

Kay Sugg



Service scope

Software add-on or extension
Yes, but can also be used as a standalone service
What software services is the service an extension to
Integration to third-party software
Cloud deployment model
Private cloud
Service constraints
The service is underpinned by a full SLA, subject to the purchase of network connectivity.
System requirements
  • Connectivity
  • Laptop/PC - Windows 7 & Above / Apple Mac
  • Android Smart Phone / Apple iOS
  • CDP or LLDP client VLAN discovery
  • 802.1q VLAN support
  • Windows based application QoS (Unified Communications Desktop Client)
  • 802.1p Quality of Service (QoS) support

User support

Email or online ticketing support
Email or online ticketing
Support response times
1 hour
User can manage status and priority of support tickets
Online ticketing support accessibility
None or don’t know
Phone support
Phone support availability
24 hours, 7 days a week
Web chat support
Onsite support
Yes, at extra cost
Support levels
Business Hours (0900-1700), weekdays excluding Bank Holidays. Extended Business Hours (0800 - 1800), weekdays excluding Bank Holidays. 24x7x365, including Bank Holidays. Pricing is included in the Service Description. A technical account manager is included as part of this service.
Support available to third parties

Onboarding and offboarding

Getting started
Exponential-e provides onsite training after installation as standard and this is provided alongside user documentation. Online training is optional and can be provided at an extra cost.
Service documentation
Documentation formats
End-of-contract data extraction
Available upon request dependent on the type of data required.
End-of-contract process
At the point of termination, all customer data, accounts and access will be permanently deleted and will not be able to be subsequently recovered or restored.
There are no termination costs for this service. Customers are responsible for extracting their own data from the platform if required.
Exponential-e may make an additional charge for transferring data out of the service.

Using the service

Web browser interface
Application to install
Compatible operating systems
  • Android
  • IOS
  • MacOS
  • Windows
Designed for use on mobile devices
Differences between the mobile and desktop service
You cannot screen share from a desktop to a mobile
Service interface
What users can and can't do using the API
On request depending on the users environment
API documentation
API documentation formats
Open API (also known as Swagger)
API sandbox or test environment
Customisation available
Description of customisation
Users profiles pictures can be customised.
Application can be Exponential-e branded or white labelled.
Application can customised to feature logo for additional fee.


Independence of resources
We operate a fully partitioned, multi-tenant platform, engineered to scale to a near infinite number of users


Service usage metrics
Metrics types
Call Analytics
Reporting types
  • API access
  • Real-time dashboards
  • Regular reports
  • Reports on request


Supplier type
Not a reseller

Staff security

Staff security clearance
Other security clearance
Government security clearance
Up to Security Clearance (SC)

Asset protection

Knowledge of data storage and processing locations
Data storage and processing locations
United Kingdom
User control over data storage and processing locations
Datacentre security standards
Complies with a recognised standard (for example CSA CCM version 3.0)
Penetration testing frequency
At least every 6 months
Penetration testing approach
Protecting data at rest
  • Physical access control, complying with CSA CCM v3.0
  • Physical access control, complying with SSAE-16 / ISAE 3402
Data sanitisation process
Data sanitisation type
Explicit overwriting of storage before reallocation
Equipment disposal approach
Complying with a recognised standard, for example CSA CCM v.30, CAS (Sanitisation) or ISO/IEC 27001

Data importing and exporting

Data export approach
Call Analytics can be exported by CSV or PDF formats. Reports can also be scheduled via the portal, so a supervisor /admin receives a report at a specified time in their inbox.
Data export formats
  • CSV
  • Other
Other data export formats
  • PDF
  • .CSV
Data import formats

Data-in-transit protection

Data protection between buyer and supplier networks
  • Private network or public sector network
  • TLS (version 1.2 or above)
  • IPsec or TLS VPN gateway
  • Legacy SSL and TLS (under version 1.2)
  • Other
Other protection between networks
Data protection within supplier network
  • TLS (version 1.2 or above)
  • IPsec or TLS VPN gateway
  • Legacy SSL and TLS (under version 1.2)
  • Other
Other protection within supplier network
Via HSCN Stage 2 Certification.

Availability and resilience

Guaranteed availability
(SLA) 99.99, assured by contractual commitment
Approach to resilience
Available on request
Outage reporting
Email Alerts
Public dashboards

Identity and authentication

User authentication needed
User authentication
  • Public key authentication (including by TLS client certificate)
  • Dedicated link (for example VPN)
  • Username or password
Access restrictions in management interfaces and support channels
Access restriction testing frequency
At least once a year
Management access authentication
Username or password

Audit information for users

Access to user activity audit information
Users receive audit information on a regular basis
How long user audit data is stored for
Between 6 months and 12 months
Access to supplier activity audit information
Users receive audit information on a regular basis
How long supplier audit data is stored for
Between 6 months and 12 months
How long system logs are stored for
Between 6 months and 12 months

Standards and certifications

ISO/IEC 27001 certification
Who accredited the ISO/IEC 27001
ISO/IEC 27001 accreditation date
What the ISO/IEC 27001 doesn’t cover
Details available on request.
ISO 28000:2007 certification
CSA STAR certification
CSA STAR accreditation date
CSA STAR certification level
Level 3: CSA STAR Certification
What the CSA STAR doesn’t cover
Details available on request.
PCI certification
Who accredited the PCI DSS certification
Blackmores UK
PCI DSS accreditation date
What the PCI DSS doesn’t cover
Hosting Provider – Applications, Storage, Security Services, shared hosting, Online Hosting, Managed Services – System Security, IT Support, Backup, Cloud Services Payment Processes – All payment services
Other security certifications
Any other security certifications
  • ISO 22301
  • ISO 20000
  • ISO 9001
  • ISO 50000
  • ISO 14001
  • Cyber Essentials PLUS
  • Commissum Information Assurance Certification
  • PIMS 686040
  • CAS(T) NCSC-264868406-1689

Security governance

Named board-level person responsible for service security
Security governance certified
Security governance standards
  • CSA CCM version 3.0
  • ISO/IEC 27001
  • Other
Other security governance standards
Exponential-e are a Stage 2 HSCN Accredited CN-SP and our network operability is fully compliant with the requirements of the HSCN Obligations Framework.
Information security policies and processes
Details available on request.

Operational security

Configuration and change management standard
Conforms to a recognised standard, for example CSA CCM v3.0 or SSAE-16 / ISAE 3402
Configuration and change management approach
Details available on request.
Vulnerability management type
Conforms to a recognised standard, for example CSA CCM v3.0 or SSAE-16 / ISAE 3402
Vulnerability management approach
Details available on request.
Protective monitoring type
Conforms to a recognised standard, for example CSA CCM v3.0 or SSAE-16 / ISAE 3402
Protective monitoring approach
Details available on request.
Incident management type
Conforms to a recognised standard, for example, CSA CCM v3.0 or ISO/IEC 27035:2011 or SSAE-16 / ISAE 3402
Incident management approach
Details available on request.

Secure development

Approach to secure software development best practice
Supplier-defined process

Public sector networks

Connection to public sector networks
Connected networks
Health and Social Care Network (HSCN)


£1.00 per licence per month
Discount for educational organisations
Free trial available
Description of free trial
2 week, free of charge trial.
x3 UC One licences
x3 Polycom VVX Handsets
Link to free trial

Service documents

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