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HSCN business applications suppliers

This page provides details of suppliers offering replacement overlay or business application services. It is part of the HSCN business applications guidance and is aimed at all organisations moving to HSCN from N3.

Historically, the N3 and Transition Network service provider (BT) delivered a small number of business application services also known as “overlays” as a set of catalogue options for consumers. These comprised:

  • N3 Voice - Hosted Voice Services (HVS) and Local Gateway Services (LGS)
  • N3 Video Conferencing (VC) services
  • N3 Remote Access Solution virtual private network (VPN) tokens
  • N3 Other Overlays - including routers, cards, ports, managed firewalls, WiFi and local area networks (LANs) 
  • N3 Site to Site VPNs (Tunnels)

As a customer migrates from N3 to the HSCN each N3 contracted overlay service will require individual actions. Full guidance on replacing these services can be found on the N3 overlays replacement guidance.

Existing N3/Transition Network overlays

The Overlays inventory provides details of all live overlay/business application services on N3/the Transition Network. 

It is intended to support users in understanding their current network estate, and which services they currently own that they are responsible for replacing prior to migrating to HSCN.

Business applications by supplier

The table below lists the HSCN business application services offered by each supplier, their contact details and links to further details of the services they offer.

This is not an exhaustive list. Details of other suppliers can be found on the CCS Network Services RM3808 ‘Suppliers by Lot’ and G-Cloud website

Detailed guidance on procuring replacement services can be found under the Main routes to market for overlay replacements section of the N3 overlays replacement guidance page.

Last updated 26 March 2020.

Supplier name Email Phone Voice Video Remote access solutions
4net Technologies Ltd 0161 864 5130 Avaya Aura® Communication Manager 4net video conferencing  
8x8 Global Cloud Communications 0207 096 6000 8x8 X Series 8x8 web conferencing  
BT 0800 032 0024 BT MeetMe BT Video Bridging BT One Mobile secure access cloud
CenturyLink 07721 235955 CenturyLink Unified Communications and Collaboration (UC&C) CenturyLink conferencing CenturyLink Adaptive Network Security
Digital Communication Systems 0191 209 4444 Digital Communication Systems Limited    
Exponential-e 0845 470 4001 Exponential-e voice Exponential-e video Remote access solutions
Gamma 0333 014 0555 Gamma Voice Services    
GCI 01923 654321 Skype for business    
HighSpeed Office (hSo) 0207 845 4510 hSo CloudPBX   hSo remote working
Logicalis 07710 935536 Logicalis voice Logicalis video Logicalis remote access solutions

Maintel 01922 658690 Maintel voice Maintel video


MLL 01628 495400     MLL HSCN Remote Connect
Piksel Ltd 07703818329     Carelink HSCN Secure Remote Access Solution

Redcentric 0800 983 2522 Redcentric voice services Redcentric video Redcentric remote access solutions
TalkTalk Business 0300 3331002 TalkTalk business voice services    
Telefonica O2 07789 271509 Telefonica voice Telefonica video Telefonica remote access solutions
Verizon 07775 410878 Verizon voice Verizon conferencing  
Vodafone   Vodafone voice connectivity Vodafone video conferencing services Vodafone Secure Remote Access

Further information

Last edited: 2 March 2021 5:15 pm