Developing interoperability standards for the UK

NICC Standards Limited is a technical forum for the UK communications sector that develops interoperability standards for public communications networks and services in the UK.  It is an independent organisation owned and run by its members.

It is now necessary to be a member to participate in NICC activities.  Learn more about NICC membership.

The NICC members’ site [login required] contains information about forthcoming meetings, working and draft documentation.

NICC is a trade mark of NICC Standards Ltd.

Latest news

NICC Open Forum and AGM 2019
The NICC Open Forum and AGM 2019 will be held at One Great George Street, London on 27 November 2019. 

The 2019 Open Forum programme is now available.

New NICC standards are now available on the ‘Publications’ page;

ND1443V1.1.1 Guidelines for the Security of All IP Telephony (All IPT) Service in the UK Telecommunications Network

The following NDs relating to the Common Number Database have been removed from the public site – ND1022, ND1023, ND1024, ND1415, ND1512 and ND1631.


NICC current work

NICC specifications are being developed for the following technical activities and interfaces:

  • IP Routeing for ported number
  • ALL IP end to end
  • Blockchain (DLT) for Number Porting and Management
  • Nuisance Calls and CLI
  • Interworking UK ISUP to SIP
  • IP access to Emergency Services
  • SIP Overload Control
  • Overlapping Gfast and VDSL

These and more current work areas are detailed here.