COMMISSION OF THE EUROPEAN COMMUNITIES 
COM(91) 208 final 
Brussels, 7 June 1991 
Proposal for a 
COUNCIL RECOMMENDATION 
on the harmonised provision of a minimum set of Packet-Switched 
Data Services in accordance with Open Network Provision 
(ONP) principles 
(presented by the Commission) 
- 2 -
EXPLANATORY MEMORANDUM 
I. INTRODUCTION 
The Telecommunications Council of December 1989 decided that the Community's 
telecommunications policy should combine in a balanced way harmonization and 
liberalisation. 
Consequently, on June 28, 1990 the Council of Ministers for Telecommunications 
adopted a Directive on the establishment of the internal market for 
telecommunications services through the implementation of open network provision 
(ONP) and the Commission adopted a Directive on competition in the markets for 
telecommunication services. 
The first Directive (known as the ONP framework Directive), considers the area of 
packet switched data services (PSDSs) as a priority. The Directive received broad 
support in the European Parliament and in the Economic and Social Committee. The 
Directive asks for the implementation of harmonized technical interfaces and/or 
service features for PSDSs and in this respect the Commission published in the 
Official JournaP on the 29.12.90 the list of packet switched public data networks 
standards suitable for ONP. The Directive also foresees as a priority the adoption of a 
Council Recommendation on the harmonised provision of a minimum set of Packet 
Switched Data Services in accordance with Open Network Provision (ONP) 
principles. 
It is in this context that the Commission presents this proposal for a Recommendation 
to the Council of Ministers. 
II. THE ROLE OF PACKET SWITCHED PUBLIC DATA NETWORKS IN THE 
DEVELOPMENT OI: EUROPEAN VALUE ADDED SERVICES 
The late 70s saw the introduction of packet switched public data networks in several 
European countries. 
1 OJ No C i.V, ?'?. ]?. 1770, p. 19- List of :;t;inrl.ii-iJ-, r <• f on-iu e " i'.c.ket switched public d.iUt 
networks , 
-3 -
2 The introduction of these national networks followed different timetables and 
different commercial priorities however, and hence the availability of a fully 
harmonised and up to date international service was held up. 
From an industrial and manufacturing point of view it was only after 1976 that the set 
of packet switched associated standards reached a mature enough stage to allow the 
development and marketing of commercially exploitable packet switching public 
systems, although the first packet switched public data networks were not 
commercially available before 1978/1979^. 
Administrations began to plan for, and implement national packet switched services 
against a range of target dates, and some administrations were therefore working with 
more mature CCITT recommendations than those that had launched public services 
earlier. 
By 1984, when the new and revised CCITT recommendations (Red Book) became 
available, most European countries already had their packet switched public data 
networks up and running on the basis of different implementations of the 1980 
versions of CCITT recommendations, and the first international gateway 
interconnections between networks had been established, based on bilateral 
arrangements without any administrative or management functions, for the provision 
of transborder services at European level. 
All these factors led to national variations of the basic service, which has made full 
international interworking difficult to achieve. 
The market for networks and services has clearly became application driven on an 
European scale, and incompatible products and services, as well as internal skills 
shortages are seen by the users as major constraints on data communications networks 
development over the next years. 
The development and availability of international value added services to support the 
applications required by the users is largely dependent on PSDSs because without 
such an adequate transeuropean transport service, higher layer value added services 
In the context of its inforni.it ion m.irket policy the O.cru.ni ty initi >tr-d the «.-stabl i shment of a 
p.inouroponn p.icket '.witched public d.it.i network (Lunni-;), which ».v. in service from 193'J to 
1984, when it was replaced by the n.ition.illy b.tsed pocket .witched public d.it.i networks. 
- A -
will be difficult to offer to users on a Community wide scale. 
Such services will flourish if, and only if, a high quality, reasonable priced, ubiquitous 
transport service is available. 
Existing packet switched public data networks have developed into a major transport 
media for the operation of value-added-services throughout the Community. Suitably 
expanded and enhanced to adhere to European standards, they offer the most suitable 
mechanism to meet the tight deadlines imposed by the 1992 Single Market goal on the 
availability of value added services necessary to support European wide industry, 
trade and administration. 
III. THE CONSULTATIVE PROCESS 
The concept of ONP conditions for open provision of packet switched public data 
networks was introduced by the Commission in the Communication on the 
Implementation of the Green PapeA In its Council Resolution of 30 June 1988 the 
Council urged for the "rapid definition" of ONP conditions for public data networks. 
Since the Commission deemed it necessary that the analytical work on public data 
networks was taken up as soon as possible the Commission started to analyse the 
subject in parallel with its work on the ONP framework Directive. Preparatory work 
on the application of ONP principles to public data networks was therefore 
undertaken by the SOG-T (Senior Officials Group - Telecommunications) and its sub­
group GAP (Groupe d'Analyse et de Prévision) as early as 1989. 
In the spirit of the then pending framework Directive, the SOG-T arranged for the 
participation of representatives of European industrial organizations, trade 
associations, service providers, telecommunications users, and telecommunications in 
general. To that end. public comments on the proposals^ of GAP were invited by 
notice in the Official Journal dated 6 April 1990.UK1 two fora were organized in 
3 COM ($$) 48 : Implementing the Cîrccn Paper on the Development of ihe Common Market for 
Telecommunications Services anti Hquipmenl. 
4 Proposal by the "Analysis ami Forecast im; Croup" (CAP) on Open Network Provision (ONP) for Public 
Data Networks Lines in the Community <>l ?.S Fcbni.uv l°')i> • 
5 OJ No C <SS, 6.4.1 WO, p V Notice No W/CXS/IU-
- 5-
March and October 1989 for public discussion of the proposals. 
Subsequently, a draft of the proposal for a recommendation was discussed with the 
ONP Committee. 
The present proposal for a Council Recommendation takes into account the results of 
a) the GAP analysis report, b) the comments received from interested parties in the 
course of the public comment process, and c) the comments received from the ONP 
Committee. At the same time it takes account of the general principles which have 
been laid down in the Directives on competition in the market of telecommunications 
services and in the ONP framework Directive. 
IV. THE APPROACH ADOPTED 
The proposal implements a concept of harmonization in the areas of standards, usage 
conditions, supply conditions and tariff principles. 
The proposed Recommendation refers in its recitals to some of the general principles 
resulting from Community law. The operative part then specifies in detail how a 
minimum set of PSDSs should be provided in a harmonised way in accordance with 
Open Network Provision principles. 
The points of the Recommendation are briefly explained hereunder : 
Provision of a minimum set of PSDSs 
Point 1 defines a minimum harmonised set of PSDSs with harmonised technical 
characteristics which must be made available throughout the Community. The point 
also sets a timetable for the provision of these services, where not available. For this 
minimum set, reference is made to the list of packet switched public data networks 
standards suitable for ONP published in the Official Journal0 (see table 1). 
Point 2 provides for the mechanism to update this set which is described in Annex II 
on the basis of changes in market demand and in technology. Changes in Annex II can 
be made by the Commission, in cooperation with the ONP-Ounmittce. Such changes 
OJ No C i;V, ..'v. 1«r\ i WO, p.IV • list of st .ind.irds r-.-f ..•( • oc- I'.v.oi -.witched public d.it.i 
networks• 
-6 -
may incorporate the removal of or the addition of PSDSs to the list. 
List of standards reference 
(90/C 327/12) 
Pursuant to Article 5 (1) of Directive 90/387/EEC (') the Commission publishes a list of 
standards which constitutes a basis for harmonized access ' and/or service features in the 
context of open network -provision. 
Given the fact that many of these standards are not yet finally adopted ('), changes may occur. 
As a consequence these standards are now being published as an indicative list. Therefore this 
list may be amended by further publication in the Official Journal of the European Communities 
pursuant to Article 5 (4) of Directive 90/387/EEC. 
1. Packet switched public data networks 
Direct access X.25 service T/TE 08-01 (*) 
T/TE 08-02 O 
T/TE 08-03 (*) 
ETS.T/TE 04-06 (•*) 
ENV 41104 (FS T/31) (**•) 
Indirect access X.28 service T/TE 08-02 (*) 
T/TE 08-03 (») 
ENV 41901 (•••) 
Indirect access X.32 service T/TE 08-02 (*) 
T/TE OS-03 (*) 
ETS T/TD 08-06 (*•) 
ENV 41105 (FS T/32) (••*) 
(*) CEPT technical spécification. 
(*•) Draft ETSI standard. 
(•••) CEN/CENELEC prestandard. In the case of ENV 41104 and ENV 4 1105 only the network 
aspects arc relevant. 
(') Council Direcuve of 2S June 1990 of the establishment of the internal market !or telecommunications 
services through the implementation of open network provision (OJ No L i9.\ 2-i. 7. 1990, ]>p. 1-40). 
(') In order to refer to the precise status of each standard, the relevants standards body should be 
contacted. Where the three stage description process for ISDN services is r.-rA (MSI ISM report ETR, 
10. S. 1990), stages 1, 2 and 3a are included. 
.V Note 
l\;:suani ID Article- :> (.') of Directive 73/ >.\7/}.i- ' " , .liiipli.n;. 
tii:- pit-vumjnu>n of conlormanrr \>.i:h the icom:--*:::-— 111s <>; .i 
covered by these standards and :jcuv.itfist.uuliii; 
90/3S7/I-i-:C and '.O/3.SS/I-:KC. :;)."( requircmeii: ••<: •.:^s -A in car ;\-
•'•'::i.i;i as Jar .o 
::.i;n Direc t.'vs 
Ii! accordance v.ith Directive V0/3M//J i;c; ilns !-• :;i.,y |,t- st:;i;>lemc:;:rd hy ::.,-iri(i standards 
m order to comply with new access requirements resulting from user demand and tcclinoloj'ital 
development. 
- 7 -
Disclosure of information 
Point 3 establishes the format in which the information is to be published in order to 
comply with the requirement that ONP conditions must be transparent and published 
in an appropriate manner. 
Supply Conditions 
The supply conditions for PSDSs are addressed in Point 4. It requires organizations to 
use a set of general supply conditions which contains at least a number of parameters 
which are of vital importance to users, e.g. the delivery period for a type of PSDS, the 
duration of the contractual period and the repair time. It also refers to the refund 
policy and the network performance targets. 
Common ordering, hilling and maintenance procedures 
Point 5 expresses the requirement of users to be able to order PSDSs in a common 
fashion, and where requested, to be able to communicate with a single organization 
for ordering, billing and maintenance purposes. 
Through the implementation of a "green number" arrangement at a Community level 
it allows, on the one hand, for the establishment of permanent arrangements for 
reverse charging capabilities allowing Community wide service providers to bill their 
customers in a global bill. The "kiosk type arrangement" allows, on the other hand, for 
the possibility of a combined collection, in a global bill, of the cost of the value-added 
service and of the cost of the call, by the organisation supplying PSDSs, thus 
facilitating the provision of value-added services across the Community, specially by 
small and medium size service providers. 
Quality of Service 
Points 6 and 7 refer to quality of service and ask for the adoption of common 
indicators for the network performance aspects of quality of service, and 
corresponding measurements methods. Both are indicated in Annex III. 
- 8 -
Tariffing Principles 
Points 8 and 9 refer to the basic principle of application independence which is to be 
applied for tariffs of PSDSs and identifies separate tariff elements which will normally 
be contained in the tariffs. 
Notification 
Points 10 and 11 deal with the information which the national regulatory authority has 
to provide to enable the Commission to monitor the implementation of this 
Recommendation, notably which organizations will conform with the provisions of the 
Recommendation. 
User Support 
Point 12 refers to a procedure for user support if difficulties are encountered in 
relation to the objectives of this Recommendation, in particular in connection with the 
provisions on the general supply conditions and quality of service. 
Progress of work 
Point 13 recommends that the Commission examines the progress of work in 
implementing the Recommendations in consultation with the ONP Committee. 
CONCLUSIONS 
Directive 387/90/l:I::C calls in its Annex 111.3 for the adoption by the Council by 1 
July 1991, acting on a proposal from the Commission, of a recommendation on the 
supply of technical interfaces, conditions of usage and tariff principles applying to 
provision of packet switched data services complying with open network principles; at 
the same time this recommendation would in particular call on Member States to 
ensure at least one such service was provided on their territory. 
The present Commission proposal for a Council Recommendation on the harmonised 
provision of a minimum set of Packet Switched Data Services in accordance with 
Open Network Provision (ONP) principles takes account of the. harmonized general 
principles laid down in the. ONP Iraniewoik Diiective and specifics which services 
- 9 -
should be provided in all Member States in a harmonized way. It is flexible and open 
for future adaptation in line with market demand and technology progress. Thus, the 
proposal significantly improves the competitive conditions in the European 
telecommunications market. 
The Council is therefore requested to adopt the attached proposal for a 
Recommendation. 
- 10 -
Proposal for a 
COUNCIL RECOMMENDATION 
on the harmonised provision of a minimum set of Packet-Switched Data Services in 
accordance with Open Network Provision (ONP) principles 
THE COUNCIL OF THE EUROPEAN COMMUNITIES, 
Having regard to the Treaty establishing the European Economic Community, 
Having regard to Council Directive 90/387/EEC of 28 June 1990 on the establishment 
of the internal market for telecommunications services through the implementation of 
Open Network Provision (ONP), 
Having regard to the proposal from the Commission, 
Whereas Directive 90/387/EEC considers,, inter alia, the principles for the 
application of Open Network Provision to the areas of packet- and circuit-
switched data services; 
Whereas Directive 90/387/EEC provides, in its Annex III, paragraph 3, for 
adoption of a Recommendation on the supply of technical interfaces, conditions 
of usage and tariff principles applying to provision of packet-switched data 
services complying with open network principles; 
Whereas Packet-Switched Public Data Networks are the most common networks through 
which packet-switched data services are made available in all Member States; 
Whereas Packet-Switched Public Data Networks have developed on a national basis and 
the availability in each Member State of Packet-Switched Public Data Networks with 
equivalent capabilities and providing lull inierconnectivity is important to meet the 
1 0J No L 192, 24.7.1990, p.1 
2 OJ No C ... 
-11 -
requirements of pan-European data networking for value-added services provision; 
Whereas Packet-Switched Data Services are used in every Member State to support value 
added services at a European-wide level; 
Whereas Di rect i ve 90/387/EEC calls for the availability in each Member State of 
a harmonized packet-switched data service (PSDS); 
Whereas in application of the principle of non-discrimination, PSDSs shall be available and 
provided on request without discrimination to all users; therefore the terms and conditions 
which apply to telecommunication organizations when using PSDSs for the provision of 
competitive services must be equivalent to the terms and conditions which apply to other 
users; 
Whereas in accordance with Directive 90/387/EEC, the conditions of Open Network 
Provision may not restrict access to and use of PSDSs except in application of essential 
requirements as defined in the said Directive; those restrictions must be objectively 
justified, must follow the principle of proportionality and must not be excessive in relation 
to the aim pursued; 
Whereas in accordance with Article 3(5) of Directive 90/387/EEC the Commission will 
determine the rules for uniform application of the essential requirements; 
Whereas usage conditions for PSDSs must be derived from essential 
requirements compatible with Community law, and are imposed through regulator)' means, 
and not through technical restrictions; 
Whereas in accordance with Commission Directive 90/388/EEC3 Member States may 
make the supply of packet- or circuit switched data services subject to licensing or 
declaration procedures which are aimed at compliance with essential requirements, or 
trade regulations relating to conditions of permanence, availability and quality of service, 
or measures to safeguard the task of general economic interest which they have entrusted 
to a telecommunications organization for the provision of switched data services, if the 
performance of that task is likely to be obstructed by the activities of private service 
providers; 
3 OJNoL 192, 24.7.1990, p.10. 
- 12 -
Whereas in accordance with Directive 90/387/EEC, the Commission has published in the 
Official Journal'* the list of packet-switched public data networks standards suitable for 
ONP; this list may be amended by further publication; 
Whereas common ordering procedures, one-stop-ordering and one-stop billing and 
maintenance are essential to promote the use of PSDSs throughout the Community; any 
cooperation of the organizations in that respect is subject to compliance with Community 
Competition law; in particular, such procedures should not result in any price fixing or 
market sharing; these procedures are to be promoted through market mechanisms, e.g. 
through Memoranda of Understanding between the organisations supplying PSDSs, in 
accordance with this Recommendation; 
Whereas in order to promote Europe-wide operation by service providers using PSDSs it 
is desirable to allow for a system where the called party pays for the calls on the basis of the 
number called, allowing the offering of free-of-charge calls to the subscriber accessing the 
service offered by the provider (green number); 
Whereas in order to promote the use of PSDSs by small-and medium-size providers of 
value-added services it is desirable to establish billing arrangements which facilitate such 
operations across the Community; such billing arrangements should allow for a system 
where the cost of the value-added service and the cost of the call are combined in a single 
bill collected by the organisation supplying PSDSs ("Kiosk type arrangement"); 
Whereas it is important in this context that appropriate allocation of harmonised 
numbering capacity is made to allow the establishment of such service arrangements across 
the Community; such allocation should be made in accordance with the principles of 
transparency and equality of treatment; 
Whereas quality of service as perceived by the users is an essential aspect of packet-
switching; 
Whereas m accordance with Directive 90/3N7/KI;C, tariffs should be based on objective 
criteria, taking into account that in a competitive environment tariffs v. ill align with cost; 
they must be transparent and properly published, thev must be sufficiently unbundled in 
accordance with the competition rules of the Treaty and thev must be non-discriminatorv 
OJ No C S?.7, 29.12.1VV.'J, p.IV- list of st nr.d.ir ck rvf <•; ••n.v f.ic *•-.-: -Mchod public d..t; 
networks. 
- 13 -
and guarantee equality of treatment; 
Whereas a high level of data protection should be applied to PSDSs equivalent to the level 
of protection for other public digital telecommunications services; such requirements 
should be taken into account in the implementation of PSDSs; 
Whereas other offerings, provided by organisations supplying PSDSs, in addition to those 
provided in accordance with the provisions of this Recommendation, should not impede the 
provision of the minimum set.; 
Whereas in conformity with the principle of separation of regulatory and operational 
functions and in application of the principle of subsidiarity, the national regulatory 
authority of each Member State should play an important role in the implementation of 
this Recommendation; 
Whereas to enable the Commission to monitor the implementation of this 
Recommendation, Member States should provide the relevant information, 
- 14 -
HEREBY RECOMMENDS: 
1. That Member States ensure the provision of a minimum set of PSDSs with 
harmonised technical characteristics in accordance with Annex I, taking account of 
market demand. 
2. That the Commi.ssion determine the modifications necessary to adapt Annex I to new 
technical developments and to changes in market demand in accordance with Article 9 
of Directive 90/387/EEC. 
3. That Member States ensure that information in respect of the PSDSs provided in 
accordance with point 1 on technical characteristics, general supply conditions, usage 
conditions, tariffs and the conditions for the attachment of terminal equipment is 
published in accordance with the presentation given in Annex II. 
4. That the general supply conditions referred to in point 3 include at least: 
- the typical delivery periods, which are the periods, counted from the date from 
which the user makes a firm request for the service in question, in which 80 percent 
of the demands for the PSDSs has been put through to the users. 
Each period shallbeestablished on the basis of the actual delivery periods of the 
PSDSs in question during a recent time interval of reasonable duration. The 
calculation must not include cases where late delivery periods were requested bv 
users. For new type's of PSDSs a target deliverv period shall be published instead of 
the typical delivei y pei iod; 
- the contractual pei iods . which include the peiiods which are in general laid down 
for the contracts and the minimum contractual periods which the user is obliged to 
accept for the PSDSs; 
- 15 -
the typical repair times , which are the periods, counted from the time when a 
failure message has been given to the responsible unit within the organizations 
supplying PSDSs up to the moment, in which 80 percent of the reported PSDSs 
have been repaired and notified back in operation to the user. For new types of 
PSDSs a target repair time period shall be published instead of the typical repair 
time. Where different classes of quality of repair are offered for the same PSDS, 
the different typical repair times shall be published. 
the refund policy, 
indicators for quality of service established in accordance with point 6. 
5. That Member States, taking into account the work of CEPT5 , note the value and 
promote the establishment, in conformity with the procedural and substantive rules of 
the Treaty and in consultation with users, of harmonised procedures for user access 
the PSDSs, in particular via the establishment of the following procedures: 
- a common ordering procedure, i.e. an ordering procedure for the procurement of 
intra-community PSDSs which ensures that there is commonality across the 
organizations supplying PSDSs in the information that has to be supplied by the 
user and the organization supplying PSDSs, and in the format in which the 
information is presented; 
- a one stop ordering procedure, i.e. a system whereby all transactions involving a 
user, required for the procurement of intra-community PSDSs supplied by more 
than one organization, can be completed between the user and a single organization 
supplying PSDSs; 
- a one-stop-billing procedure, i.e. a system whereby the payment transaction for 
intracommunity PSDSs supplied by more than one organization to a single user can 
be completed at one location between the user and a single: organization supplying 
PSDSs, and 
3 One-stop shopping Service Specific Schedule for PSf'OM, CAC Oct. V0, 
- 16 -
- a one-stop-maintenance procedure, i.e. a system whereby the reporting of faults for 
intracommunity PSDSs supplied by more than one organization to a single user can 
be done at one location between the user and a single organization supplying 
PSDSs, which will take full responsibility for restoration of service. 
These procedures should include the establishment of Community - wide service 
arrangements allowing for: 
- a capability where the called party pays for the calls (Green Number); 
- a capability where the cost of the value-added service and the cost of the call are 
combined in a single bill collected by the organisation supplying PSDSs (Kiosk type 
arrangements). 
These procedures are to be promoted through market mechanisms, e.g. through a 
Memorandum of Understanding open to all organisations supplying PSDSs in 
accordance with this Recommendation. 
6. That common indicators for the network performance aspects of the quality of service 
and common measurement methods be adopted, notably for those indicators in 
Annex III. 
7. That the national regulatory authorities ensure the availability of periodic, statistical 
reports showing the performance in relation to the quality of service indicators, in 
accordance with point 6, at least for each calendar year, from 1 January 1993. 
8. That tariffs be based on objective criteria and independent of the type of 
application implemented by the users of the PSDSs, where the same type of facilities 
are used. 
- 17 -
9. That the tariffs for PSDSs normally contain the following elements : 
-an initial Charge, 
-a periodic Rental Charge, 
-a usage charge, including normally a fixed per call charge based either on a 
minimum time and/or volume charge or a call set-up charge, a volume related 
charge based on the use of an integral number of segments0 , and a duration 
related charge based on an interval of time sufficiently short to avoid discrimination 
against short type transactions. 
Where other tariff elements are applied, these must be transparent and based on 
objective criteria. 
10. That the national regulatory authorities notify the Commission before 31 December 
1991 of the organizations which provide PSDSs in accordance with 
this Recommendation, and thereafter of any changes to this information. 
11. That the national regulatory authorities ensure the availability of summary reports in 
particular with regard to the availability of PSDSs provided in accordance with point 
1, the implementation of the general supply conditions under points 3 and 4 and the 
reports under point 7 at least for each calendar year and that the summary reports be 
sent to the Commission no later than 3 months after the end of the annual reporting 
period. 
12. That the national regulatory authority ensure the establishment of an ea.sy procedure 
for users of packet-switched data services to invoke with regard to any difficulties 
encountered in relation to the objectives of this Recommendation, in particular in 
connection with points 1.3,4,6 and 0; 
A segment is up to M o>.iets (or bytes) of uSIM <iit.i where th" octet is 8 rjits. 
- 18 -
13. That the Commission examine the progress of the work in implementing this 
Recommendation, in consultation with the ONP Committee, (in view of the fulfilment 
of the objectives of Directive 90/387/EEC and) on the basis of the summary reports 
provided under point 11. 
Done at Brussels, For the Council 
The President 
- 19 -
ANNEX I 
DEFINITION OF A COMMUNITY WIDE MINIMUM SET OF PACKET SWITCHED 
DATA SERVICES WITH HARMONISED TECHNICAL CHARACTERISTICS IN 
ACCORDANCE WITH POINT 1 AND TIMETABLE FOR THEIR AVAILABILITY 
A GENERAL CONSIDERATIONS 
The Recommendation aims at the harmonised provision of a minimum set of PSDSs 
in accordance with Open Network Provision principles to users in order to facilitate 
the development of European wide services. 
These services should: 
i)be made available on an adequately unbundled basis in order to give users maximum 
flexibility. 
ii)be structured in the following way (on a service basis): 
ONP Core Offering 
- access/ feature set(s) which must be offered by all networks; 
- user selects (one) set in order to have the basic service 
- set to be tariffed as a bundle. 
ONP User Options 
- feature offered by all networks on an individual basis: 
- feature which may be selected by user; 
- may in specific cases substitute Core offerings features. 
iii)take into account technological development and the growth in availability of 
features not considered in the proposed service. 
- 20 -
B STANDARDS TO BE APPLICABLE 
The standards applicable for this minimum set of PSDSs with harmonised technical 
characteristics are in particular those in the indicative list of packet switched public 
data networks standards suitable for ONP published in the Official Journal1 , 
accordingly to the procedure in Article 5 ( 1) of Directive 90/387/EEC. 
C TECHNICAL CHARACTERISATION OF EACH SERVICE AND TIMETABLE FOR 
IMPLEMENTATION 
C.l. OFFERINGS TO BE PROVIDED AT THE LATEST BY 31 DECEMBER 1991 
SERVICE OFFERING 
X.25 CORE OFFERING 
access link data rates : 2400, 
4800, 9600 bit/s 
support of DTEs conforming with 
CEPT T/TE 08-011, CEPT T/TE 08-032 and in 
conformance with ETS T/TE 04-063 
layer 3 for VC, (1 logical channel) 
USER OPTIONS 
additional logical channels at least 
to a total of 32 for 9600 bit/s 
options indicated4 in CEPT T/TE 08-02s 
as E or EA 
OJ No C 327, 29.12.1970, p. 19- List of st.ifvj.irds reference- Packet switched public dat; 
networks 
- 21 -
Cl (CONT.) 
X.286 
dial-in only CORE OFFERING 
access link data rate 300 bit/s (V.21 modem) 
1200 bit/s (V.22 modem) 
X.28 standard terminal profiles 
Support of DTEs conforming with CEPT T/TE 08-025, 
CEPT T/TE 08-032 and ENV 419017 
USER OPTIONS 
NUI 
additional standardised 
profiles selection8 
reverse charging8 
X.32 
UNIDENTIFIED 
SERVICE 
X.32 
iDENTIFlED 
SERVICE 
di a 1 - in only CORE OFFERING 
for national use 
at least one of the two sets : 
1) 2400 bit/s (V.22 bis or V.32 modem) 
2) 4800, 9600 bit/s (V.32 modem) 
1 or more logical channels 
reverse charging 
VC operation 
Support of DTEs conforming with CEPT T/TE 08-025, 
CEPT T/TE 08-032 and ETS T/TD 08-06v 
CORE OFFERING 
data rates and modem.'; as per 
un i denti fi ed case 
identification by NUI or XII) 
support of DTEs as per unidentified case 
1. or more logical channel , Vf." operation 
- 2? -
C.2. OFFERINGS TO BE PROVIDED AT THE LATEST BY 31 JUNE 1992 
SERVICE OFFERING 
X.25 CORE OFFERING 
access link data rate 48000 bit/s or 64000 bit/s 
USER OPTIONS 
additional logical channels 
at least to a total of 128 
for 48000 or 64000 bit/s 
Hunt Group 
Call redirection within a network 
with the same DNIC 
Extended interrupt 
CCITT specified DTE facilities 
Intra-conununity use of 
CUG facilities 
Called Line Address modified notifications 
C.3. OFFERINGS TO BE PROVIDED AT THE LATEST BY 31 DECEMBER 1992 
SERVICE 
X.25 
X.28 
L - i. n o 111 y 
X.32 
LW IDENTIFIED 
SERVICE OFFERING 
USER OPTIONS 
Intra-community use. of rev< 
ch a r gin g fa ci1i t ie s 
CORE OFFERING 
access ) ink da; a r,.: e : 2V)0 b 
(V.22 bis mod.-;:-; 
USER OPT TONS 
I tit. ra - commun i : v 
cb/i v,\ i n.-' ! i ; 
CORE OFFERING 
Intra-community use of the service 
- 23 -
I larmonizalion of the dedicated packet-mode access to a packet switched public data network (PSPDNs) for OSI 
2 
General Intcrworking and service aspects of packet switched data networks 
Approval requirements for data terminal equipment to connect to packet switched public data networks using CCi'fT Recommendation X.25 (1984) 
Iixccpt : Call redirection within a network with the same DNIC 
International use of CUG facilities 
International use of reverse charging facilities 
Hunt Group 
Called line address modified notification 
Rxtcndcd interrupt 
CCrrr specified DTK facilities 
Intcrworking aspects of packet switched public data networks 
6. The X.2S messages are not intended for automatic DTE operation and as a consequence may be nationally dependent. The progressive 
implementation of X.3 (1988) and X.28 (1988) will allow to set a X.3 parameter to determine whether CCITT standardized or national 
messages shall be used at the interface. 
7 
9 Infornialion System Interconnection. 
X.29-modc procedures between a packet mode DTK or a PAD and a PAD via a public or private X.25 packet switched data network or ISO 8208 packet level entity and ISO 
7776 link level entity. X.3 character-mode access via a public or private PAD attached to an X.25 packet switched network or ISO 8208 packet level entity and ISO 7776 link 
level entity. X.28 character-mode access via a telephonic circuit or data circuit to a PAD. 
for national use 
I larmonizalion of switched access to PSPDN for OSI end systems 
- 24" -
ANNEX II 
PUBLICATION PRESENTATION FOR THE INFORMATION TO BE PROVIDED 
IN RESPECT OF PACKET SWITCHED DATA SERVICES IN ACCORDANCE 
WITH POINT 3 
The information referred to in Point 3 of the Recommendation shall follow the 
presentation given below. 
A TECHNICAL CHARACTERISTICS 
The technical characteristics include the physical and electrical characteristics as well 
as the detailed technical and performance specifications which apply at the network 
termination point, without prejudice to the Council Directive 83/189/EEC^ laying 
down a procedure for the provision of information in the field of technical standards 
and regulations. Clear reference shall be made to the standards implemented. 
B GENERAL SUPPLY CONDITIONS 
The general supply conditions shall include at least the elements identified in Point 4. 
C USAGE CONDITIONS 
The conditions resulting from the application of essential requirements. 
I) TARIFFS 
The tariffs will normally include the Initial Charge, the Periodic Rental Charge and 
the Usage Charge (including, normally, a per call charge, a vol :;ne related charge and 
a duration related charge). Cleai indication of other charges. ••.<;. charges related to 
quality of service, or bulk provision, should be available. 
2 OJ No L 109, 26.4.1933, p.3 
- 25 -
E LICENSING AND/ OR DECLARATION CONDITIONS FOR USE OF PSDSs 
WHERE APPLICABLE 
F CONDITIONS FOR THE ATTACHMENT OF TERMINAL EQUIPMENT 
- 26 -
ANNEX III 
INDICATORS FOR THE NETWORK PERFORMANCE ASPECTS OF THE QUALITY 
OF SERVICE OF PSDSs 
Common indicators for the network performance aspects of the quality of service of 
PSDSs and common measurement methods should be adopted in order to allow for 
the determination of a representative sample of the performance of user's direct 
access to the PSDSs as well as the end-to-end statistical performance achieved by the 
network as a whole. 
Such indicators for the network performance a.spects of the quality of service of 
PSDSs and measurement methods should be based on the ongoing work in CEPT, and 
notably on Recommendations T/CAC 23, T/CAC 3 A, T/CAC 45 . 
For each of the above performance criteria, indicators should be chosen which are 
representative of the service: 
Availability Unsuccessful Network Congestion (NC) calls ratio (UNCR), 
Service availability, 
Dependability Mean time between NC disconnections (MTNC), 
Speed of service Transmitted throughput (TIT), 
Received throughput (RTP), 
•J Indicators for the network performer ire ;r;|>"ct-; of ?h-.- tpality of -, e " v i r. e of internat ional 
packet switched services 
^ Monitoring of network performance aspects of rp.it ity J' int-.-rrvitiun.il :.v;ket switched service 
using internally derived indicators 
5 Monitoring of network performance aspects of quality of inrern.ition.il :.i'ket switched service 
using externally derived indicators 
- 27 -
Round trip delay (RTD), 
Call set-up delay (CSD). 
Results of network performance measurements should be made publicly available, so 
that users of PSDSs can be informed about the achieved levels of performance for 
national and European services.These statistics should permit comparison with the 
established target values for network performance, to be published under Point 3 of 
the Recommendation. 
- 28 -
Round trip delay (RTD), 
Call set-up delay (CSD). 
Results of network performance measurements should be made publicly available, so 
that users of PSDSs can be informed about the achieved levels of performance for 
national and European services.These statistics should permit comparison with the 
estabUshed target values for network performance, to be published under Point 3 of 
the Recommendation. 
JLLf ISSN 0254-1475 
COM(91) 208 final 
DOCUMENTS 
SN 15 
Catalogue number : CB-CO-91-267-EN-C 
ISBN 92-77-73506-6 
Office for Official Publications of the European Communities 
Lr-2985 Luxembourg