- A SIP trunk provides access to and from the PSTN using Internet Protocol (IP). It allows a company to replace its traditional fixed PSTN lines with a highly cost effective and flexible resilient IP connection


  • 24/7 Support
  • Real Time Reporting
  • Highly Scalable
  • Reduce Costs through replacement of ISDN lines
  • Ideal for use in Business Continuity Planning


  • Reduced cost
  • Disaster Recovery
  • Ideal for multi site deployment removing geographic limitations
  • Advanced services including call routing and call recording


£6.50 to £8.50 per licence per month

Service documents


G-Cloud 11

Service ID

2 5 2 2 4 4 0 8 9 7 9 3 9 4 5



Peter Hetreed


Service scope

Service scope
Software add-on or extension No
Cloud deployment model
  • Public cloud
  • Private cloud
Service constraints NO
System requirements Terminating equipment must be capable of supporting SIP

User support

User support
Email or online ticketing support Email or online ticketing
Support response times P1 30 minutes
P2 4 hours
P3 24 hours
P4 48 hours
User can manage status and priority of support tickets Yes
Online ticketing support accessibility WCAG 2.1 A
Phone support Yes
Phone support availability 24 hours, 7 days a week
Web chat support No
Onsite support Yes, at extra cost
Support levels Service Desk Portal: Free of charge
Email: Free of charge
Phone: Free of charge
Onsite: At extra cost, refer to rate card
Support available to third parties Yes

Onboarding and offboarding

Onboarding and offboarding
Getting started Email documentation supported by the Invo servicedesk with telephone support
Service documentation Yes
Documentation formats
  • HTML
  • PDF
End-of-contract data extraction Invo will not hold any information or data we only provide connectivity
End-of-contract process At the end of the contract term in line with Invo's terms and conditions, and provided the appropriate contractual notice is given no termination charges will apply

Using the service

Using the service
Web browser interface No
Application to install No
Designed for use on mobile devices Yes
Differences between the mobile and desktop service None
Service interface No
Customisation available No


Independence of resources Real time traffic management and monitoring of the platform


Service usage metrics Yes
Metrics types Network uptime and downtime, detailed daily, weekly or monhtly reports accessed on line
Reporting types
  • Real-time dashboards
  • Regular reports
  • Reports on request


Supplier type Reseller providing extra features and support
Organisation whose services are being resold BT,GAMMA,TALKTALK BUSINESS,TMS

Staff security

Staff security
Staff security clearance Conforms to BS7858:2012
Government security clearance Up to Developed Vetting (DV)

Asset protection

Asset protection
Knowledge of data storage and processing locations Yes
Data storage and processing locations United Kingdom
User control over data storage and processing locations No
Datacentre security standards Complies with a recognised standard (for example CSA CCM version 3.0)
Penetration testing frequency At least once a year
Penetration testing approach Another external penetration testing organisation
Protecting data at rest Physical access control, complying with CSA CCM v3.0
Data sanitisation process No
Equipment disposal approach A third-party destruction service

Data importing and exporting

Data importing and exporting
Data export approach Not Applicable to Sip trunks
Data export formats CSV
Data import formats CSV

Data-in-transit protection

Data-in-transit protection
Data protection between buyer and supplier networks
  • Private network or public sector network
  • TLS (version 1.2 or above)
Data protection within supplier network TLS (version 1.2 or above)

Availability and resilience

Availability and resilience
Guaranteed availability Specific SLA,s agreed at the time of contract or if now are specifically agreed the Info terms and Conditions will apply
Approach to resilience Available on request and under a Non Disclosure Agreement
Outage reporting Private dashboard and email

Identity and authentication

Identity and authentication
User authentication needed Yes
User authentication
  • 2-factor authentication
  • Public key authentication (including by TLS client certificate)
  • Username or password
Access restrictions in management interfaces and support channels Approved list of administrators
Access restriction testing frequency At least once a year
Management access authentication 2-factor authentication

Audit information for users

Audit information for users
Access to user activity audit information Users contact the support team to get audit information
How long user audit data is stored for At least 12 months
Access to supplier activity audit information Users contact the support team to get audit information
How long supplier audit data is stored for User-defined
How long system logs are stored for User-defined

Standards and certifications

Standards and certifications
ISO/IEC 27001 certification Yes
Who accredited the ISO/IEC 27001 BSi
ISO/IEC 27001 accreditation date 1 SEPTEMBER 2016
What the ISO/IEC 27001 doesn’t cover All provision, and in live services is provided under ISO 27001
ISO 28000:2007 certification No
CSA STAR certification No
PCI certification No
Other security certifications No

Security governance

Security governance
Named board-level person responsible for service security Yes
Security governance certified Yes
Security governance standards ISO/IEC 27001
Information security policies and processes Those prescribed under ISO27001 for which we are fully accredited

Operational security

Operational security
Configuration and change management standard Supplier-defined controls
Configuration and change management approach Configuration and change management is managed through ITILV3, ISO9001 and ISO27001
Vulnerability management type Supplier-defined controls
Vulnerability management approach Vulnerability management is managed through daily scans, and weekly patching runs. Critical flaws are addressed immediately if the nature of threat requires it
Protective monitoring type Supplier-defined controls
Protective monitoring approach Host based and perimeter monitoring feed into a central SIEM service, providing real time notification of any potential compromises. Compromises are then dealt with within a 4 hour SLA
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 Incidents are classified into 4 levels, with appropriate SLAs for each.
Incidents are reporting via the service desk portal, or in the case of critical incidents, the initial report can be made via phone.

Secure development

Secure development
Approach to secure software development best practice Conforms to a recognised standard, but self-assessed

Public sector networks

Public sector networks
Connection to public sector networks No


Price £6.50 to £8.50 per licence per month
Discount for educational organisations No
Free trial available No

Service documents

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