94/796/EC: Commission Decision of 18 November 1994 on a common technical regulation for the pan-European integrated services digital network (ISDN) primary rate access
Date: 1994-11-18
Institutions: European Commission
Subjects: European standard, harmonisation of standards, peripheral, technical regulations, telecommunications, transmission network













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31994D0796

94/796/EC: Commission Decision of 18 November 1994 on a common technical regulation for the pan-European integrated services digital network (ISDN) primary rate access  


Official Journal L 329 , 20/12/1994 P. 0001 - 0013 Finnish special edition: Chapter 13 Volume 29 P. 0126  Swedish special edition: Chapter 13 Volume 29 P. 0126  





COMMISSION DECISION of 18 November 1994 on a common technical regulation for the pan-European integrated services digital network (ISDN) primary rate access (94/796/EC)THE COMMISSION OF THE EUROPEAN COMMUNITIES,  Having regard to the Treaty establishing the European Community,  Having regard to Council Directive 91/263/EEC of 29 April 1991 on the approximation of the laws of the Member States concerning telecommunications terminal equipment, including the mutual recognition of their conformity (1), as amended by Directive  93/68/EEC (2), and in particular Articles 6(2) and 16(4) thereof,  Whereas the Commission has adopted under Council Directive 86/361/EEC (3) the measure identifying the type of terminal equipment for which a common technical regulation is required, together with the associated scope statement;  Whereas this Decision constitutes a bridging measure which is to be reviewed within a period of two years following its adoption due account being taken of the progress made by the relevant standardization body engaged in the preparation of a new  harmonized standard implementing the essential requirements applicable;  Whereas during this period it may be necessary to amend this Decision with respect to the harmonized standards identified in this Decision;  Whereas in some Member States, the early national implementations of ISDN may have resulted in justified national variations;  Whereas in order to ensure continuity of access to markets for manufacturers now serving one or more national markets, it is necessary to allow for transitional arrangements regarding the use of national requirements during the period mentioned in this  Decision;  Whereas the maximum period mentioned in this Decision should be determined by the finalization by the relevant standardization body of the mandated harmonized standards implementing the essential requirements applicable;  Whereas the common technical regulation adopted in this Decision is in accordance with the opinion of the Approvals Committee for Terminal Equipment (ACTE),  HAS ADOPTED THIS DECISION:  Article 1  1. This Decision shall apply to terminal equipment intended to be connected to a public telecommunications network and falling within the scope of the harmonized standard identified in Article 2 (1).  2. This Decision establishes a common technical regulation covering the technical characteristics, electrical and mechanical interface requirements, and access control protocol to be provided by terminal equipment which is capable of and intended by the  manufacturer, or his representative, for connection to a T, or coincident S and T, reference point for a primary rate access at an interface to a public telecommunications network presented as a pan-European ISDN (EURO-ISDN) primary rate access point.  Article 2  1. The common technical regulation shall include the harmonized standard prepared for the corresponding measure adopted under Directive 86/361/EEC, but shall limit itself to the essential requirements referred to in Article 4 (c) to (f) of Directive  91/263/EEC. The reference to the standard is set out in Annex I, of which the applicable part is shown in Annex II.  2. Terminal equipment covered by this Decision shall comply with the common technical regulation referred to in paragraph 1, shall meet the essential requirements referred to in points (a) and (b) of Article 4 of Directive 91/263/EEC, and shall meet the  requirements of any other applicable Directives, in particular Council Directives 73/23/EEC (4) and 89/336/EEC (5).  Article 3  Notified bodies designated for carrying out the procedures referred to in Article 9 of Directive 91/263/EEC shall, as regards terminal equipment covered by Article 1 (1) of this Decision, use or ensure the use of the harmonized standard referred to in  Annex I except where a justified national variation is applicable during the period referred to in Article 4.  Article 4  The Commission shall examine the experience gained in the application of this Decision and the progress made by the relevant standardization body for the purpose of ensuring the early availability of the relevant harmonized standard which has been  adopted by that recognized standardization body. To that end it shall adopt any necessary amendments to this Decision in accordance with the procedures laid down in Directive 91/263/EEC, and it shall adopt a final measure within a maximum period of two  years after this Decision has taken effect.  Article 5  This Decision is addressed to the Member States.  Done at Brussels, 18 November 1994.  For the Commission Martin BANGEMANN Member of the Commission (1) OJ No L 128, 23. 5. 1991, p. 1.(2) OJ No L 220, 31. 8. 1993, p. 1.(3) OJ No L 217, 5. 8. 1986, p. 21.(4) OJ No L 77, 26. 3. 1973, p. 29.(5) OJ No L 139, 23. 5. 1989, p. 19.    ANNEX I  Reference to the harmonized standard of which parts are applicable  The harmonized standard referred to in Article 2 of the Decision is:  NET 5 (ISDN primary rate access) OJ No C 53, 24. 2. 1993, p. 6.   Additional information  The harmonized standard referred to, NET 5, was adopted under Directive 86/361/EEC.  The full text of NET 5 can be obtained from the following address:  European telecommunications standards institute,  F-06921 Sophia Antipolis Cedex.    ANNEX II  Cross reference list indicating applicable part of the harmonized standard    Layer 1, NET 5, cross reference list  "" ID="1">C.2.1 > ID="2">9.2.3 > ID="3">Not TTCN > ID="4">To measure the bit rate when the IUT (Implementation Under Test) is not synchronized. "> ID="1">C.2.3.1 > ID="2">9.2.1 > ID="3">Not TTCN > ID="4">To check the conformance of the shape of all  mark pulses, irrespective of the polarity, transmitted by IUT. "> ID="1">C.2.3.2 > ID="2">9.2.1 > ID="3">Not TTCN > ID="4">To check the absence of any voltage higher than 10 % of the nominal peak value of a pulse during the transmission of a space (no  pulse). "> ID="1">C.2.3.3 > ID="2">9.2.1 > ID="3">Not TTCN > ID="4">To check the balance between the amplitude of positive and negative pulses (measured at the centre of the pulse interval). "> ID="1">C.2.3.4 > ID="2">9.2.1 > ID="3">Not TTCN >  ID="4">To check the balance between the time duration of pulses of different polarity (measured at the half of the nominal pulse amplitude). "> ID="1">C.2.4.1 > ID="2">9.3.1 > ID="3">Not TTCN > ID="4">To measure the return loss of the receiving section  of IUT. "> ID="1">C.2.4.2 > ID="2">9.3.2 > ID="3">Not TTCN > ID="4">To check the input port immunity against an interfering signal combined with the input signal with a cable attenuation of maximum 6 dB. "> ID="1">C.2.5.3.1 > ID="2">9.4.8 > ID="3">Not  TTCN > ID="4">To check the correct generation of frame alignment word, multiframe alignment word, CRC bits C1 to C4. "> ID="1">C.2.8.1 > ID="2">9.3.3 9.4.4 > ID="3">Not TTCN > ID="4">To check the ability of IUT to tolerate on the 2 048 kbit/s incoming  signal a sinusoidal jitter/wander in accordance with subclause 9.3.3. "> ID="1">C.2.8.2.1 > ID="2">9.2.4 > ID="3">Not TTCN > ID="4">To measure the jitter generated from IUT in the presence of input jitter when IUT is synchronized by the simulator. ">  ID="1">C.2.9 > ID="2">9.3.4 > ID="3">Not TTCN > ID="4">To check minimum tolerance to longitudinal voltage at input ports. "> ID="1">C.2.11.1 > ID="2">9.3.5 > ID="3">Not TTCN > ID="4">To check IUT receiver input impedance towards ground. ">  ID="1">C.2.11.2 > ID="2">9.2.2 > ID="3">Not TTCN > ID="4">To check IUT transmitter output impedance towards ground. "> ID="1">C.3.1.1 > ID="2">9.2.5 > ID="3">Not TTCN > ID="4">To check the coding, decoding and the binary organization of Normal  Operational Frame. "> ID="1">C.3.2.2 > ID="2">9.5.4.2.1 9.5.4.2.2 9.5.4.2.3 > ID="3">Not TTCN > ID="4">The tests defined in this subclause intend to check the different stable states at the IUT side and the possible transitions between them. These  tests are performed by simulating the opposite side, monitoring the IUT at the interface and verifying appropriate state transition. "> ID="1">C.4.3 > ID="2">9.5.5.1 9.5.5.2 > ID="3">Not TTCN > ID="4">To test that IUT correctly executes the frame  alignment procedure. "> ID="1">C.4.4 > ID="2">9.4.8 9.5.5.3 > ID="3">Not TTCN > ID="4">To test the IUT correctly executes the CRC multiframe alignment. "> ID="1">C.4.5 > ID="2">9.5.5.4 9.5.5.5 > ID="3">Not TTCN > ID="4">To test the correct execution  of CRC calculation, comparison with the received bits C1 to C4 and generation of the CRC error report with bit E. "">  Layer 2, NET 5, cross reference list  "" ID="1">A.2.2.1 > ID="2">A.2.2.1.1 > ID="3">TC24004 > ID="4">10.6.1.2 > ID="5">TTCN > ID="6">Tests the normal initialization of multiple-frame operation. "> ID="1">A.2.2.1 > ID="2">A.2.2.1.3 > ID="3">TC25002 > ID="4">10.6.1.2 > ID="5">TTCN >  ID="6">To test that terminal takes appropriate action if the data link connection cannot be initialized, e.g. in case of the unavailability of resources at the network side. "> ID="1">A.2.2.1 > ID="2">A.2.2.1.4 > ID="3">TC25005 > ID="4">10.6.1.3 >  ID="5">TTCN > ID="6">Tests the terminals response to the inability of the network to respond to requests to initialize the data link and to ensure that the TE under test tries only (N200 + 1) times to initialize the data link. "> ID="1">A.2.2.1 >  ID="2">A.2.2.1.5 > ID="3">TC27022 > ID="4">10.8 > ID="5">TTCN > ID="6">To ensure correct data link reset by the terminal. "> ID="1">A.2.2.2 > ID="2">A.2.2.2.2 > ID="3">TC27003 > ID="4">10.7.1 10.7.2 10.7.2.2 10.7.3 > ID="5">TTCN > ID="6">Tests the  operation layer 2 sequence numbering. Since there are 128 sequence numbers the test program should oycle through this number of information frame transfers. "> ID="1">A.2.2.2 > ID="2">A.2.2.2.3 > ID="3">TC27004 > ID="4">10.7.3 > ID="5">TTCN > ID="6">To  test that the terminal correctly accepts an 'I' command frame as valid response to an 'I' command frame which it has transmitted. "> ID="1">A.2.2.2 > ID="2">A.2.2.2.4 > ID="3">TC28012 > ID="4">10.7.2 > ID="5">TTCN > ID="6">Ensures that whilst in the  timer recovery state the terminal is able to recelve I-frames. "> ID="1">A.2.2.2.5 > ID="2">- > ID="3">TC27076 > ID="4">10.7.1 > ID="5">TTCN > ID="6">Ensures that the maximum number of unacknowledged I-frames equals k (=7). "> ID="1">A.2.2.3 >  ID="2">A.2.2.3.1 > ID="3">TC27012 > ID="4">10.6.2 > ID="5">TTCN > ID="6">Tests the normal data link disconnection sequences. "> ID="1">A.2.2.4 > ID="2">A.2.2.4.1 > ID="3">TC27058 > ID="4">10.9.2 > ID="5">TTCN > ID="6">Tests the layer 2 FCS check  mechanism. "> ID="1">A.2.2.4 > ID="2">A.2.2.4.2 > ID="3">TC27015 > ID="4">10.7.6 > ID="5">TTCN > ID="6">Tests the layer 2 recovery mechanism of the TE in the event of I-frames loss. "> ID="1">A.2.2.4 > ID="2">A.2.2.4.3 > ID="3">TC27019 > ID="4">10.7.6  > ID="5">TTCN > ID="6">Test layer 2 recovery mechanism in the event of RR-frame loss. "> ID="1">A.2.2.4 > ID="2">A.2.2.4.4 (b) > ID="3">TC27027 > ID="4">10.9.1 > ID="5">TTCN > ID="6">Test layer 2 recovery mechanism in the event of RR-frame loss. ">  ID="1">A.2.2.4.5 > ID="2">- > ID="3">TC27075 > ID="4">10.7.3 > ID="5">TTCN > ID="6">Ensures that simultaneous acknowledgement of more than one frame is allowed. "> ID="1">A.2.2.5 > ID="2">A.2.2.5.1 > ID="3">TC27404 > ID="4">10.7.5 > ID="5">TTCN >  ID="6">To ensure correct handling of peer busy condition. (Frame numbers 1, 4 to 9). "> ID="1">A.2.2.5 > ID="2">A.2.2.5.1 > ID="3">TC28406 > ID="4">10.7.1 10.7.2 > ID="5">TTCN > ID="6">To ensure correct handling of peer busy conditions. (Frame numbers  1 to 3). "> ID="1">A.2.2.7 > ID="2">A.2.2.7.1 > ID="3">TC14002 > ID="4">10.5.3.2 > ID="5">TTCN > ID="6">Tests the allocation of TEIs using management procedures and tests that the terminal shall perform TEI check on a check request message for a  specific TEI value. "> ID="1">A.2.2.7 > ID="2">A.2.2.7.2 > ID="3">TC13008 > ID="4">10.5.2.1 > ID="5">TTCN > ID="6">To test the terminal's response to a TEI denied frame. "> ID="1">A.2.2.7 > ID="2">A.2.2.7.3 > ID="3">TC14001 > ID="4">10.4.1 10.4.2  10.5.3.2 > ID="5">TTCN > ID="6">Checks the terminal shall perform TEI check on request from ET. "> ID="1">A.2.2.7 > ID="2">A.2.2.7.4 > ID="3">TC13010 > ID="4">10.6.2.1 > ID="5">TTCN > ID="6">Checks whether the IUT after N202 unsuccesful attempts to  acquire a TEI value makes no further attempts. "> ID="1">A.2.2.8 > ID="2">A.2.2.8.1.1 > ID="3">TC24020 > ID="4">10.9.2 > ID="5">TTCN > ID="6">Ensures that the terminal does not accept frames containing an invalid address and that, on receipt of such a  frame, it takes no action. "> ID="1">A.2.2.8 > ID="2">A.2.2.8.4.1 > ID="3">TC27028 > ID="4">10.9.1 > ID="5">TTCN > ID="6">Ensures that the terminal shall transmit a REJ-frame in response to an out of sequence I-frame. "> ID="1">A.2.2.8.4.2 > ID="2">-  > ID="3">TC27074 > ID="4">10.7.3 > ID="5">TTCN > ID="6">Ensures that on receipt of a REJ-frame the terminal transmits the approplate I-frames. "> ID="1">A.2.2.8 > ID="2">A.2.2.8.4.3 > ID="3">TC28005 > ID="4">10.7.4 10.7.6 > ID="5">TTCN > ID="6">Ensures  that on receipt of a REJ-frame during the timer recovery condition the terminal retransmits the appropriate I-frame. "> ID="1">A.2.2.8 > ID="2">A.2.2.8.5.1 (a) > ID="3">TC27040 > ID="4">10.9.3 > ID="5">TTCN > ID="6">Ensures that the terminal resets the  data link on receipt of a frame with an invalid N(R) value. (N(P) is valid in the range V(A) & le; N(R) & le; V(S)). "> ID="1">A.2.2.8 > ID="2">A.2.2.8.6.1 (b) > ID="3">TC27043 > ID="4">10.9.3 > ID="5">TTCN > ID="6">Ensures that the terminal resets the  data fink on receipt of a frame with an invalid N(R) value, (N(R) is valid in the range V(A) & le; N(R) & le; V(S)). "> ID="1">A.2.2.8 > ID="2">A.2.2.8.5.1 (c) > ID="3">TC27046 > ID="4">10.9.3 > ID="5">TTCN > ID="6">Ensures that the terminal resets the  data link on receipt of a frame with an invalid N(R) value. (N(R) is valid in the range V(A) & le; N(R) & le; V(S). "> ID="1">A.2.2.8 > ID="2">A.2.2.8.7 > ID="3">TC11013 > ID="4">10.4.2 > ID="5">TTCN > ID="6">Ensures that the terminal shall not accept  frames, except those required for TEI assignment, whilst in the TEI unassigned state. "> ID="1">A.2.2.9 > ID="2">A.2.2.9.1 > ID="3">TC27417 > ID="4">10.7.5 10.7.6 > ID="5">TTCN > ID="6">Ensures T200 is within the allowed tolerance of its value of 1  second (± 5 %). "> ID="1">A.2.2.9 > ID="2">A.2.2.9.2 > ID="3">TC27411 > ID="4">10.7.5 10.7.6 > ID="5">TTCN > ID="6">Ensures the correct value of N200, the maximum number of (retransmlaslons of a frame (default value 3)). "> ID="1">A.2.2.9.3 > ID="2">-  > ID="3">TC27061 > ID="4">10.7.3 > ID="5">TTCN > ID="6">Ensures that the terminal restarts timer T200 upon receipt of an acknowledgement while there are still outstanding I-frames unacknowledged. "">  Layer 3, NET 5, cross reference list  "" ID="1">A.3.1 > ID="2">A.1.1.1.1 > ID="3">TC10005 > ID="4">11.4.2.1 11.4.2.5.1 > ID="5">TTCN > ID="6">Ensures that on receipt of a valid SETUP message without the Sending complete information element the terminal responds with either a SETUP  ACKNOWLEDGE, CALL PROCEEDING, ALERTING or CONNECT message and moves to the relevant state. "> ID="1">A.3.1 > ID="2">A.1.1.1.2 > ID="3">TC10006 > ID="4">11.4.2.1 11.4.2.5.1 > ID="5">TTCN > ID="6">Ensures that on receipt of a valid SETUP message with the  Sending complete information element the terminal responds with either a CALL PROCEEDING, ALERTING or CONNECT message and moves to the relevant state. "> ID="1">A.3.1 > ID="2">A.1.1.2.1 (No option A) > ID="3">TC10008 > ID="4">11.4.2.2 > ID="5">TTCN >  ID="6">Ensures that on receipt of a valid SETUP message containing an incompatibly coded bearer capability information element the TE responds by sending a RELEASE COMPLETE message and remains in the Null state. "> ID="1">A.3.1 > ID="2">A.1.1.2.2 (No  option A) > ID="3">TC10009 > ID="4">11.4.2.2 > ID="5">TTCN > ID="6">This test is only applicable to TE's with an HLC capability. It ensures that on receipt of a valid set up message containing a compatible BC but incompatible High Layer compatibility  information element the TE (which performs high layer compatibility checks) responds by sending a RELEASE COMPLETE message and remains in the Null state. "> ID="1">A.3.1 > ID="2">A.1.2 > ID="3">TC10011 > ID="4">11.4.6.2 > ID="5">TTCN > ID="6">Ensures  that on receipt of a repeated valid SETUP message with the same call reference as the initial SETUP message, the terminal ignores the second SETUP message and remains in the same state. "> ID="1">A.3.1 > ID="2">A.1.3.3 > ID="3">TC10015 >  ID="4">11.4.6.5.1 > ID="5">TTCN > ID="6">Ensures that on receipt of a SETUP message without a mandatory information element (e.g. the Bearer capability information element), the terminal responds with a RELEASE COMPLETE message and remains in the Null  state. "> ID="1">A.3.1 > ID="2">A.1.3.4 > ID="3">TC10027 > ID="4">11.4.6.6.1 > ID="5">TTCN > ID="6">Ensures that on receipt of a SETUP message with an unrecognized (not yet defined) information element of the type 'comprehension required' (i. e. bits  5-8 of the information element identifier coded ' 0 0 0 0 ') the terminal responds with a RELEASE COMPLETE message and remains in the Null state. "> ID="1">A.3.1 > ID="2">A.1.3.5 > ID="3">TC10028 > ID="4">11.4.6.6.1 > ID="5">TTCN > ID="6">Ensures that  on receipt of a SETUP message with an unrecognized (not yet defined) information element of the type other than 'comprehension required' (i. e. bits 5-8 of the information element identifier coded other than ' 0 0 0 0 ') the terminal takes normal action  on those information elements which are recognized and have valid content. Additionally the terminal may return a STATUS message. "> ID="1">A.3.1 > ID="2">A.1.3.6 > ID="3">TC10029 > ID="4">11.4.6.6.2 > ID="5">TTCN > ID="6">Ensures that on receipt of a  SETUP message with a non-mandatory information element with invalid/unrecognized content the terminal takes normal action on those information elements which are recognized and have valid content. Additionally the terminal may return a STATUS message.  "> ID="1">A.3.2 > ID="2">A.2.1 > ID="3">TC10002 > ID="4">11.4.6.2 11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to a RELEASE message with a RELEASE COMPLETE message and that no change of state occurs. "> ID="1">A.3.2 > ID="2">A.2.2 >  ID="3">TC10001 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal ignores a RELEASE COMPLETE message and that no change of state occurs. "> ID="1">A.3.2 > ID="2">A.2.3.1 > ID="3">TC10010 > ID="4">11.4.6.2 > ID="5">TTCN > ID="6">Ensures the  terminal responds to an inopportune message with a RELEASE or a RELEASE COMPLETE message (see Preliminary Note 10). "> ID="1">A.3.2 > ID="2">A.2.4.2 > ID="3">TC10004 > ID="4">11.4.6.8 > ID="5">TTCN > ID="6">Ensure that on receipt of a STATUS message  indicating any call state except the Null state, the terminal responds with either a RELEASE or a RELEASE COMPLETE message. "> ID="1">A.3.4 > ID="2">A.4.1 > ID="3">TC12501 > ID="4">11.4.3.4.2 > ID="5">TTCN > ID="6">Ensures the terminal responds to a  DISCONNECT message with a RELEASE message and enters the Release Request state. "> ID="1">A.3.4 > ID="2">A.4.2 > ID="3">TC12505 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures that on receipt of a RELEASE message the terminal responds with RELEASE  COMPLETE message and enters the Null state. "> ID="1">A.3.4 > ID="2">A.4.3 > ID="3">TC12504 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures that on receipt of a RELEASE COMPLETE message the terminal makes no response but returns to the Null state. ">  ID="1">A.3.4 > ID="2">A.4.4.1 > ID="3">TC12508 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to an inopportune message with a STATUS message and that no change of state occurs. "> ID="1">A.3.4 > ID="2">A.4.4.2 > ID="3">TC12521  > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to a syntactically invalid message type with a STATUS message and that no change of state occurs. "> ID="1">A.3.4 > ID="2">A.4.5.1 > ID="3">TC12502 > ID="4">11.4.2.4 > ID="5">TTCN >  ID="6">Ensures that on receipt of an INFORMATION PDU without sufficient called number identification the IUT does not respond and remains in the same state. "> ID="1">A.3.4 > ID="2">A.4.5.2 > ID="3">TC12503 > ID="4">11.4.2.4 11.4.2.5.1 > ID="5">TTCN >  ID="6">Ensures that on receipt of an INFORMATION message containing sufficient called number information the terminal responds with either a CALL PROCEEDING, ALERTING or CONNECT message and moves to the relevant state. "> ID="1">A.3.4 > ID="2">A.4.6.1  > ID="3">TC12507 > ID="4">11.4.6.8 > ID="5">TTCN > ID="6">Ensures that on receipt of a STATUS message specifying the Null state, the terminal moves into the Null state. "> ID="1">A.3.5 > ID="2">A.5.1 > ID="3">TC10901 > ID="4">11.4.3.4.2 > ID="5">TTCN >  ID="6">Ensures the terminal responds to a DISCONNECT message with a RELEASE message and enters the Release Request state. "> ID="1">A.3.5 > ID="2">A.5.2 > ID="3">TC10904 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to a  RELEASE message with a RELEASE COMPLETE message and enters the Null state. "> ID="1">A.3.5 > ID="2">A.5.3 > ID="3">TC10903 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures that on receipt of a RELEASE COMPLETE message the terminal makes no response but  returns to the Null state. "> ID="1">A.3.5 > ID="2">A.5.4.1 > ID="3">TC10907 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to an inopportune message with a STATUS message and that no change of state occurs. "> ID="1">A.3.5 >  ID="2">A.5.4.2 > ID="3">TC10920 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to a message having an invalid message type with a STATUS message and that no change of state occurs. "> ID="1">A.3.5 > ID="2">A.5.6.1 >  ID="3">TC10906 > ID="4">11.4.6.8 > ID="5">TTCN > ID="6">Ensures that on receipt of a STATUS message specifying the Null state, the terminal moves into the Null state. "> ID="1">A.3.6 > ID="2">A.6.1 > ID="3">TC10701 > ID="4">11.4.3.4.2 > ID="5">TTCN >  ID="6">Ensures the terminal responds to a DISCONNECT message with a RELEASE message and enters the Release Request state. "> ID="1">A.3.6 > ID="2">A.6.2 > ID="3">TC10704 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to a  RELEASE message with a RELEASE COMPLETE message and enters the Null state. "> ID="1">A.3.6 > ID="2">A.6.3 > ID="3">TC10703 > ID="4">11.4.2 11.4.6.3 > ID="5">TTCN > ID="6">Ensures that on receipt of a RELEASE COMPLETE message the terminal makes no  response but returns to the Null state. "> ID="1">A.3.6 > ID="2">A.6.4.1 > ID="3">TC10707 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to an inopportune message with a STATUS message and that no change of state occurs. ">  ID="1">A.3.6 > ID="2">A.6.4.2 > ID="3">TC10720 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to a message having an invalid message type with a STATUS message and that no change of state occurs. "> ID="1">A.3.6 > ID="2">A.6.6.1  > ID="3">TC10706 > ID="4">11.4.6.8 > ID="5">TTCN > ID="6">Ensures that on receipt of a STATUS message specifying the Null state, the terminal moves into the Null state. "> ID="1">A.3.7 > ID="2">A.7.1 > ID="3">TC10802 > ID="4">11.4.3.4.2 > ID="5">TTCN >  ID="6">Ensures the terminal responds to a DISCONNECT message with a RELEASE message and enters the Release Request state. "> ID="1">A.3.7 > ID="2">A.7.2 > ID="3">TC10805 > ID="4">11.4.2.8 11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to  a RELEASE message with a RELEASE COMPLETE message and enters the Null state. "> ID="1">A.3.7 > ID="2">A.7.3 > ID="3">TC10804 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures that on receipt of a RELEASE COMPLETE message the terminal makes no response  but returns to the Null state. "> ID="1">A.3.7 > ID="2">A.7.4.1 > ID="3">TC10808 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to an inopportune message with a STATUS message and that no change of state occurs. "> ID="1">A.3.7  > ID="2">A.7.4.2 > ID="3">TC10821 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to a message having an invalid message type with a STATUS message and that no change of state occurs. "> ID="1">A.3.7 > ID="2">A.7.6.1 >  ID="3">TC10807 > ID="4">11.4.6.8 > ID="5">TTCN > ID="6">Ensures that on receipt of a STATUS message specifying the Null state, the terminal moves into the Null state. "> ID="1">A.3.7 > ID="2">A.7.7 > ID="3">TC10801 > ID="4">11.4.2.7 > ID="5">TTCN >  ID="6">Ensures that the terminal will enter the Active state on receipt of a CONNECT ACKNOWLEDGE message. "> ID="1">A.3.8 > ID="2">A.8.2 > ID="3">TC11005 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to a RELEASE message with a  RELEASE COMPLETE message and enters the Null state. "> ID="1">A.3.8 > ID="2">A.8.3 > ID="3">TC11004 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures that on receipt of a RELEASE COMPLETE message the terminal makes no response but returns to the Null  state. "> ID="1">A.3.8 > ID="2">A.8.4.1 > ID="3">TC11008 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to an inopportune message with a STATUS message and that no change of state occurs. "> ID="1">A.3.8 > ID="2">A.8.4.2.1 >  ID="3">TC11021 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to a message having an invalid message type with a STATUS message and that no change of state occurs. "> ID="1">A.3.8 > ID="2">A.8.6.1 > ID="3">TC11007 >  ID="4">11.4.6.8 > ID="5">TTCN > ID="6">Ensures that on receipt of a STATUS message specifying the Null state, the terminal moves into the Null state. "> ID="1">A.3.8 > ID="2">A.8.7 > ID="3">TC11003 > ID="4">11.4.7 > ID="5">TTCN > ID="6">Ensures that on  receipt of a NOTIFY message the terminal makes no response and remains in the same state. "> ID="1">A.3.8 > ID="2">A.8.8 > ID="3">TC21003 > ID="4">11.4.3.3 > ID="5">TTCN > ID="6">Ensures the terminal transmits a DISCONNECT message and enters the  Disconnect Request state on invocation of clearing. "> ID="1">A.3.9 > ID="2">A.9.1 > ID="3">TC20002 > ID="4">11.4.1.1 > ID="5">TTCN > ID="6">Ensures terminal transmits a valid SETUP message and enters the Call Initiated state (state 1). ">  ID="1">A.3.10 > ID="2">A.10.1 > ID="3">TC10103 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures on receipt of a RELEASE message the terminal responds with a RELEASE COMPLETE message and enters the Null state. "> ID="1">A.3.10 > ID="2">A.10.2 >  ID="3">TC10102 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures on receipt of a RELEASE COMPLETE message the terminal makes no response but returns to the Null state. "> ID="1">A.3.10 > ID="2">A.10.3.1 > ID="3">TC10107 > ID="4">11.4.6.3 > ID="5">TTCN >  ID="6">Ensures the terminal responds to an inopportune message with a STATUS message and that no change of state occurs. "> ID="1">A.3.10 > ID="2">A.10.3.2 > ID="3">TC10120 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to a  message having an invalid message type with a STATUS message and that no change of state occurs. "> ID="1">A.3.10 > ID="2">A.10.4.1 > ID="3">TC10105 > ID="4">11.4.6.8 > ID="5">TTCN > ID="6">Ensures that on receipt of a STATUS message specifying the  Null state, the terminal moves into the Null state. "> ID="1">A.3.10 > ID="2">A.10.5 > ID="3">TC10101 > ID="4">11.4.1.3.1 > ID="5">TTCN > ID="6">Ensures that on receipt of a CALL PROCEEDING message the terminal enters the Outgoing CALL PROCEEDING  state. "> ID="1">A.3.10 > ID="2">A.10.6 > ID="3">TC10104 > ID="4">11.4.1.2 > ID="5">TTCN > ID="6">Ensures on receipt of a SETUP ACKNOWLEDGE message the terminal enters the Overlap Sending state. "> ID="1">A.3.11 > ID="2">A.11.1 > ID="3">TC10204 >  ID="4">11.4.3.4.2 > ID="5">TTCN > ID="6">Ensures on receipt of a DISCONNECT message the terminal moves into the Disconnect Indication state. "> ID="1">A.3.11 > ID="2">A.11.2 > ID="3">TC10208 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures on receipt  of a RELEASE message the terminal responds with a RELEASE COMPLETE message and enters the Null state. "> ID="1">A.3.11 > ID="2">A.11.3 > ID="3">TC10207 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures that on receipt of a RELEASE COMPLETE message the  terminal makes no response but returns to the Null state. "> ID="1">A.3.11 > ID="2">A.11.4.1 > ID="3">TC10211 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to an inopportune message with a STATUS message and that no change of  state occurs. "> ID="1">A.3.11 > ID="2">A.11.4.2 > ID="3">TC10224 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to a message having an invalid message type with a STATUS message and that no change of state occurs. ">  ID="1">A.3.11 > ID="2">A.11.6.1 > ID="3">TC10210 > ID="4">11.4.6.8 > ID="5">TTCN > ID="6">Ensures that on receipt of a STATUS message specifying the Null state, the terminal moves into the Null state. "> ID="1">A.3.11 > ID="2">A.11.8 > ID="3">TC10203 >  ID="4">11.4.1.3.2 > ID="5">TTCN > ID="6">Ensures on receipt of a CALL PROCEEDING message the terminal enters the Outgoing CALL PROCEEDING state (state 3). "> ID="1">A.3.11 > ID="2">A.11.9 > ID="3">TC10201 > ID="4">11.4.1.4 > ID="5">TTCN >  ID="6">Ensures on receipt of an ALERTING message the terminal enters the Call Delivered state. "> ID="1">A.3.11 > ID="2">A.11.10 > ID="3">TC10202 > ID="4">11.4.1.5 > ID="5">TTCN > ID="6">Ensures on receipt of a CONNECT message the terminal enters the  Active state (a CONNECT ACKNOWLEDGE response from the terminal is optional). "> ID="1">A.3.11 > ID="2">A.11.11 > ID="3">TC20204 > ID="4">11.4.1.2 > ID="5">TTCN > ID="6">Ensures the terminal transmits an INFORMATION message when prompted and remains in  the same state. "> ID="1">A.3.11 > ID="2">A.11.12 > ID="3">TC20203 > ID="4">11.4.3.3 > ID="5">TTCN > ID="6">Ensures the terminal transmits a DISCONNECT message and enters the Disconnect request state on initiation of call clearing by the terminal. ">  ID="1">A.3.12 > ID="2">A.12.1 > ID="3">TC10303 > ID="4">11.4.3.4.2 > ID="5">TTCN > ID="6">Ensures on receipt of a DISCONNECT message the terminal enters the Release Request state. "> ID="1">A.3.12 > ID="2">A.12.2 > ID="3">TC10307 > ID="4">11.4.6.3 >  ID="5">TTCN > ID="6">Ensures on receipt of a RELEASE message the terminal responds with a RELEASE COMPLETE message and enters the Null state. "> ID="1">A.3.12 > ID="2">A.12.3 > ID="3">TC10306 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures on receipt  of a RELEASE COMPLETE message the terminal makes no response but returns to the Null state. "> ID="1">A.3.12 > ID="2">A.12.4.1 > ID="3">TC10310 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to an inopportune message with a  STATUS message and that no change of state occurs. "> ID="1">A.3.12 > ID="2">A.12.4.2 > ID="3">TC10323 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to a message having an invalid message type with a STATUS message and that no  change of state occurs. "> ID="1">A.3.12 > ID="2">A.12.6.1 > ID="3">TC10309 > ID="4">11.4.6.8 > ID="5">TTCN > ID="6">Ensures that on receipt of a STATUS message specifying the NULL state, the terminal moves into the Null state. "> ID="1">A.3.12 >  ID="2">A.12.9 > ID="3">TC10302 > ID="4">11.4.1.5 > ID="5">TTCN > ID="6">Ensures on receipt of a CONNECT message the terminal enters the Active state (a CONNECT ACKNOWLEDGE response from the terminal is optional). "> ID="1">A.3.12 > ID="2">A.12.10 >  ID="3">TC20301 > ID="4">11.4.3.3 > ID="5">TTCN > ID="6">Ensures that when the terminal transmits a DISCONNECT message it enters the Disconnect Request state. "> ID="1">A.3.13 > ID="2">A.13.1 > ID="3">TC10402 > ID="4">11.4.3.4.2 > ID="5">TTCN >  ID="6">Ensures on receipt of a DISCONNECT message the terminal responds with a RELEASE message and enters Release Request state. "> ID="1">A.3.13 > ID="2">A.13.2 > ID="3">TC10406 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures on receipt of a RELEASE  message the terminal responds with a RELEASE COMPLETE message and enters the Null state. "> ID="1">A.3.13 > ID="2">A.13.3 > ID="3">TC10405 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures that on receipt of a RELEASE COMPLETE message the terminal makes  no response but returns to the Null state. "> ID="1">A.3.13 > ID="2">A.13.4.1 > ID="3">TC10409 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to an inopportune message with a STATUS message and that no change of state occurs.  "> ID="1">A.3.13 > ID="2">A.13.4.2 > ID="3">TC10422 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to a message having an invalid message type with STATUS message and that no change of state occurs. "> ID="1">A.3.13 >  ID="2">A.13.6.1 > ID="3">TC10408 > ID="4">11.4.6.8 > ID="5">TTCN > ID="6">Ensures that on receipt of a STATUS message specifying the Null state, the terminal moves into the Null state. "> ID="1">A.3.13 > ID="2">A.13.8 > ID="3">TC10401 > ID="4">11.4.1.5  > ID="5">TTCN > ID="6">Ensures on receipt of a CONNECT message the terminal enters the Active state (a CONNECT ACKNOWLEDGE response from the terminal is optional). "> ID="1">A.3.13 > ID="2">A.13.9 > ID="3">TC20401 > ID="4">11.4.3.3 > ID="5">TTCN >  ID="6">Ensures that when the terminal transmits a DISCONNECT message it enters the Disconnect Request state. "> ID="1">A.3.14 > ID="2">A.14.1 > ID="3">TC11101 > ID="4">11.4.3.4.2 11.4.3.5 > ID="5">TTCN > ID="6">Ensures the terminal responds to a  DISCONNECT message with a RELEASE message and enters the Release Request state. "> ID="1">A.3.14 > ID="2">A.14.2 > ID="3">TC11105 > ID="4">11.4.3.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to a RELEASE message with a RELEASE COMPLETE  message and enters the Null state. "> ID="1">A.3.14 > ID="2">A.14.3 > ID="3">TC11104 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures that on receipt of a RELEASE COMPLETE message the terminal makes no response but returns to the Null state. ">  ID="1">A.3.14 > ID="2">A.14.4.1 > ID="3">TC11107 > ID="4">11.4.6.3 11.4.6.7 > ID="5">TTCN > ID="6">Ensures the terminal responds to an inopportune message a STATUS message and that no change of state occurs. "> ID="1">A.3.14 > ID="2">A.14.4.2 >  ID="3">TC11120 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to a message having an invalid message type with a STATUS message and that no change of state occurs. "> ID="1">A.3.14 > ID="2">A.14.6.1 > ID="3">TC11106 >  ID="4">11.4.6.8 > ID="5">TTCN > ID="6">Ensures that on receipt of a STATUS message specifying the Null state, the terminal moves into the Null state. "> ID="1">A.3.14 > ID="2">A.14.7 > ID="3">TC11103 > ID="4">11.4.7 > ID="5">TTCN > ID="6">Ensures that  on receipt of a NOTIFY message the terminal makes no response or returns a STATUS message and remains in the same state. "> ID="1">A.3.16 > ID="2">A.16.1 > ID="3">TC11904 > ID="4">11.4.3.5 11.4.6.3 > ID="5">TTCN > ID="6">Ensures that on receipt of a  RELEASE message the terminal enters the Null state immediately. This is a test of RELEASE collision handling. "> ID="1">A.3.16 > ID="2">A.16.2 > ID="3">TC11903 > ID="4">11.4.3.4.3 11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal on receipt of a  RELEASE COMPLETE message clears down to the Null state. "> ID="1">A.3.16 > ID="2">A.16.3.1 > ID="3">TC11908 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to an inopportune message with a STATUS message and that no change of  state occurs. "> ID="1">A.3.16 > ID="2">A.16.3.2 > ID="3">TC11909 > ID="4">11.4.6.3 > ID="5">TTCN > ID="6">Ensures the terminal responds to a message having an invalid message type with a STATUS message and that no change of state occurs. ">  ID="1">A.3.16 > ID="2">A.16.5.1 > ID="3">TC11906 > ID="4">11.4.6.8 > ID="5">TTCN > ID="6">Ensures that on receipt of a STATUS message the terminal releases the resources and moves into the Null state. "> ID="1">A.3.16 > ID="2">A.16.5.2 > ID="3">TC11907  > ID="4">11.4.6.8 > ID="5">TTCN > ID="6">In this case ensures that on receipt of a STATUS message the terminal makes no response and remains in the same state. "> ID="1">A.3.20.3 > ID="2">- > ID="3">TC19003 > ID="4">11.4.8 > ID="5">TTCN >  ID="6">Ensures that on receipt of a RESTART message the specified channel is returned to the idle condition, the call reference is returned to the Null state, and a RESTART ACKNOWLEDGE is sent. ""> (1) Draft prTBR 4, April 1994.(2) Draft prTBR 4, April 1994.(3) Draft prTBR 4, April 1994.(4) Draft prTBR 4, April 1994.(5) Draft prTBR 4, April 1994.(6) Draft prTBR 4, April 1994.(7) Draft prTBR 4, April 1994.(8) Draft prTBR 4, April 1994.(9)  Draft prTBR 4, April 1994.(10) Draft prTBR 4, April 1994.(11) Draft prTBR 4, April 1994.    ANNEX III  Supplementary information  Test suites to be used to demonstration compliance with the relevant essential requirements could, in a number of cases, be based upon the tests using the TTCN notation. These tests are found under the following references:  I-ETS 300 312, I-ETS 300 313 and I-ETS 300 322.  The full text of these I-ETS can be obtained from the following address:  European Telecommunications Standards Institute,  F-06921 Sophia Antipolis Cedex.