The home of network interoperability standards
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Developing interoperability standards for the UK

NICC 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 2016

The NICC Open Forum and AGM 2016 was held at One Great George Street, London on 10 November 2016. 

The presentations from the event are available here.


New NICC specifications are now available on the 'Publications' page;

ND1405V4.1.1 - Guidelines on the Use of DSL Transmission Systems in the BT Access Network

ND1438V1.1.1 - Voluntary Code of Practice Mitigating Theft of Service from End User Voice over IP Communications Systems

ND1602V6.1.1 - Specification of the Access Network Frequency Plan applicable

to transmission systems connected to the BT Access Network

ND1035V2.1.1 - SIP Network to Network Interface Signalling

ND1439 - Guidance for Implementing ND1016 in SIP networks


NICC current work

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

  • Nuisance Calls and CLI
  • SIP NNI and Corporate Network Connection
  • IP access to Emergency Services
  • Interworking between network protocols
  • SIP Overload Control

These and more current work areas are detailed here.  

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