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Specialist Task Force 304:
AT Commands for Assistive Mobile Device Interfaces

Who we are:

STF 304 Team Picture

Team Leader Francoise Petersen
Team Members Nick Hine
Erik Zetterström

News – TS 102 511 is Published

TS 102 511 was published on the 31st of August, as planned! It is available at the ETSI publications Download Area

The STF will now enter the dissemination phase of the project. A strategy is being formulated that will include, but will not be confined to the standardisation bodies. You are welcome to contact us in case you have any ideas regarding dissemination activities !

What we do:

This EC/EFTA funded STF has produced the ETSI Technical Specification TS 102 511 Human Factor (HF); AT Commands for Assistive Mobile Device Interfaces.

The ETSI Technical Specification sets out the requirements for a number of AT commands that can be used to enable assistive devices to interwork satisfactorily with mobile terminals.

Why AT commands?
Because AT commands has matured from being a modem control technology to be a comprehensive and pervasive middleware platform for mobile devices.

Read our Terms of Reference

Why we do it:

An eEurope community that allows everyone fair access to advanced information and communication services must include those citizens whose disabilities are such that they cannot use devices designed for all. For this group of users, often with multiple disabilities, it is crucial that affordable, effective and usable assistive devices be available. These devices must be able to easily connect to and interact with a multitude of fixed and mobile ICT devices.

The work to achieve this will include the upgrading of existing standards where the necessary Hayes AT commands do not exist (as recommended in the ETSI TR 102 068, developed under the eEurope Action Plan). Consensus building on this set of interface standards will be initialized in the appropriate standards fora (e.g. 3GPP) in a process which involves manufacturers of mainstream mobile devices, assistive devices and groups representing the user with different special needs.

Standardized communication with assistive mobile devices will improve the quality of life for millions of disabled citizens of the European Union since it will open up possibilities for Small and Medium-sized enterprises (SMEs) producing assistive devices.

It will also provide a basis for national regulatory authorities to implement the Framework Directive (2002/21/EC), enable member states to take specific measures for disabled end-users in order to ensure access to publicly available telephone services in accordance with the Universal Service Directive (2002/22/EC) and facilitate the implementation of the Public Procurement Directive (2004/18/EC).

How to contact us:

The project team invites you to participate in the stakeholder consultation by completing one of the forms below. Please choose the form that most closely fits your interest and expertise:

In case you don’t find a suitable form, please send us an email and we will see if we can develop a new form that would suit your needs.

You are welcome to contact us at:

If you want to discuss with a wider group, use our mail list:

To subscribe, go to:


Past Events 2007


MS F will be presented at HF#44, 24-28 September.

COST219ter, on the 1-2 October in San Sebastian.

Conference on the 9th European Conference for the Advancement of Assistive Technology in Europe 3-5 October, in San Sebastian. The conference is organized by AAATE 2007.

Meeting with ITS

Information and discussions with ITS (Swedish Standards Institute, in telecom) on the 28th of August in Stockholm.

Meeting with ITU-T SG 16

The meeting was held on the 26 June - 6 July 2007 in Geneva. ITU-T SG16 understood that the desire is to see that the documented commands are implemented in as many mobile devices as possible for the benefit of those with disabilities. In order to achieve that objective, it was agreed during the meeting to create an ITU-T work item on AT commands.


The meeting was held on the 11-15 June. The final draft of TS 102 511 was discussed and amended. The meeting considered that a further two weeks of review should be allowed before final approval.

HF intero

Presentation and discussion, on the 24-25 April at ETSI.

3GPP SA1#36

Coordination with 3GPP SA1 working on Service and system Aspects. The meeting was on the 27th of April in Madrid. The STF had hoped to start a new 3GPP work item during this meeting, but unfortunately this topic (access to mobile services by disabled users) is not a priority within the 3GPP, so the suggested new 3GPP work item did not receive support from the industry representatives at this meeting.

3GPP CT1#46

Coordination with the group responsible for the Technical Specification 27.007; 3rd Generation Partnership Project; Technical Specification Group Core Network and Terminals; AT command set for User Equipment (UE). The meeting took place on the 28th of Mars in Warsaw.

Joint ETSI USER group and HF meeting

The meeting took place at NORMAPME in Brussels on the 20th of February 2007. Milestone D was approved.

Events 2006

ETSI Technical Committee Human Factors

Milestone A (table of contents and scope) has been approved at HF#40, 16 June at ETSI.

Workshop, ICCHP 2006, 10th International Conference on Computers, Helping People with Special Needs

The first workshop has been held on the 11th of July 2006. It has been organized by STF 304 in association with the ICCHP 2006, 10th International Conference on Computers, Helping People with Special Needs, July 12-14, University of Linz, Austria.

Stakeholder interviews at ISAAC

Stakeholders have been interviewed at the ISAAC (International Society for Augmentative and Alternative Communication) conference. This year the 12th Biennial International Conference of ISAAC was held on the 29-31st of July and the 1-3rd of August in Düsseldorf, Germany. 48 exhibitors presented their products at this year’s conference.

Workshop, Rehabilitation and day centre in Upper Springland, Perth

The next workshop has been held on the 21st of September 2006 at the Rehabilitation and day centre in Upper Springland, Perth in Scotland. People with various disabilities have be asked to give their opinions about tasks corresponding to different mobile technology usage scenarios. 

ETSI Technical Committee Human Factors

Milestone B (initial draft) has been approved at HF#41, 22 September at ETSI.

Presentation, ID-dagarna

A presentation of our work has been held by Erik Zetterström on the 11th of October 2006 at ID-dagarna at the Factory in Nacka Strand, Stockholm. Following the presentation, there were discussions of key topics.

TCAM eWG on disability

Our work has been presented and discussed at TCAM eWG on disability, 16-17th October at the European Commission, DG Information Society and Media, in Brussels. The main goal of the TCAM (Telecommunications Conformity Assessment and Market Surveillance Committee) meeting was to reach agreements to implement important features for accessible communication in mainstream communication products and services.

Time plan for the work :

Milestones Work development
March 2006 Start of work
31 May 2006 ToC, Scope
30 September 2006 Initial draft
30 November 2006 Stable draft
25 May 2007 Final draft
31 August 2007 Publication of technical specification
31 March 2008 Final report to European Commission


Note: this information is based upon STF working assumptions. The views expressed do not necessarily represent the position of ETSI in this context.

Last updated: 2013-04-13 17:28:37