1、 TITE 07-01 bis E Page 1 Recommendation T/TE 07-016is (Edinburgh 1988) HARMONIZATION OF TELETEX TERMINAL EQUIPMENT Recommendation proposed by the Working Group T/WG 10 “Terminal Equipment” (TE) Text of the Recornmendation adopted by the “Telecommunications” Commission: “The European Conference of Po
2、sts and Telecommunications Administrations, considering - the work undertaken within CEPT with the view to harmonizing international telecommunication services as well - that TELETEX services are implemented or will be implemented in the future, - that CCITT Recommendations T.60, T.61, T.62 and T.70
3、 describe the technical requirements for terminal - that CEPT SWG TE 2 has studied the harmonization of TELETEX terminal equipment, recommends - to the member Administrations of the CEPT, which intend to introduce the TELETEX service, to apply the as equipment, equipment, O specification contained i
4、n this Recommendation.” Edition of June 30, 1989 e- T/TE 07-01 bis E Page 2 FOREWORD This Recommendation describes the basic Teletex equipment for use in the international Teletex service. As there are still numerous national variants in the current available national specifications, this Recommenda
5、tion has to be seen as a target, toward which all the national specifications develop. It is foreseen that in the early 1990s all national specifications will be identical to this Recommendation. Therefore, all extensions to the basic Teletex equipment will be based on this Recommendation. Contents
6、Part 1. GENERAL O. INTRODUCTION 1. 2. REFERENCES 3. DEFINITIONS 4. ABBREVIATIONS 5. SCENARIO DESCRIPTION 6. CONFORMITY 7. LAYER DESCRIPTION SCOPE AND FIELD OF APPLICATION Part 2. ADDITIONAL SESSION LA YER REQUIREMENTS Part 3. ADDITIONAL SER VICE AND TERMINAL REQUIREMENTS = ,r - - - - - - Edition of
7、June 30, 19- 2326414 O010046 7 M 1 O. 1. 2. T/TE 07-Olbis E i Part 1, Page 1 i Part 1 of CEPT Recommendation T/TE 07-01bis GENERAL INTRODUCTION This Recommendation defines the minimum requirements for terminal equipment participating in the European Teletex service. The Teletex terminal described he
8、rein offers users the ability to prepare character coded text messages together with a means of conveying the true contents and form of such messages to a distant terminal complying with the same specifications. Teletex systems such as cluster, PABXs, etc. may need additional requirements. In this R
9、ecommendation the requirements of the following CEPT Administrations have been incorporated: Austria (A) Belgium (B) Denmark (DK) Finland (SF) France (F) Germany, Federal Teletex terminal specification Republic of (D) Greece (GR) No specifcation available yet Ireland (EI) No specification available
10、yet Italy (I) Specification for Teletex terminals over CSPDN (N 694) Luxembourg (L) No specification available yet Netherlands (NL) Teletex terminal specification Norway (N) Portugal (P) No specification available yet Spain (E) Teletex terminal specification Sweden (S) Technical Requirements for con
11、nection of equipment to the Teletex service in Sweden Switzerland (CH) Teletex national requirements for Teletex terminal equipment United Teletex service technical guide Kingdom (UK) National Requirements for Teletex Terminal Equipment Specification for access to Belgian Teletex service Nordic Tele
12、tex Specification NT-SPEC No. T-xxx Spcification du Service Tltex SCOPE AND FIELD OF APPLICATION This Recommendation describes the specifications to be used for basic Teletex terminal equipment for use in the international Teletex service. This Recommendation is based on the Blue Book versions (1988
13、) of the relevant CCITT Recommendations. In addition it enumerates the various Administration specific technical requirements, with the aim to establish a common set of CEPT technical requirements. Other CEPT Recommendations dealing with Teletex terminal equipment or Teletex service are referenced i
14、n this document. Note. Throughout this Recommendation the term “Administration” should be taken to read as either “Administration” or “Recognized Private Operating Agency”. REFERENCES CCITT Recommendation T.60: CCITT Recommendation T.61: CCITT Recommendation T.62: CCITT Recommendation T.63 : CCITT R
15、ecommendation T.64: CCITT Recommendation T.70: CCITT Recommendation T.90: CCITT Recommendation T.330: CCITT Recommendation T.390: CCITT Recommendation X.430: CCITT Recommendation F.200: CCITT Recommendation F.201: CCITT Recommendation F.203 : CCITT Recommendation U.201: Terminal equipment for use it
16、i the Teletex service (1988) Cliaracter repertoire and coded character sets for the interfiatioital Teletex service (1988) Control procedures for Teletex and Groily 4 Facsimile Services (1988) Provisions for verijication of Teletex terIiiiml coittpliance (1988) Conformame Testing Procedures for the
17、1984 version Teletex Recom- mendatiom (1 9 8 8) Ne tivork- Iildepemen t Basic Tramport Service for the Telema tic Services (1988) Characteristics and Protocols for Termipials for Telematic Services in ISDN (1988) Telematic Access to Interpersonal Messaging System (1988) Teletex Requirements for Inte
18、rworking with the Telex Service (1988) MHS: Access Protocol for Teletex Terminals (1988) Teletex Service (1988) lilterworkifig between Teletex Service and Telex Service (1988) Network Bused Storage for the Teletex Service (1988) IilterivorkiFig betweeti Teletex Service aiid Telex Service (1988) Edit
19、ion of June 30, 1989 -. i m 2326414 0010047 9 m TITE 07-01 bis E Part 1, Page 2 3. 4. 5. 6. 7. 7.1. 7.1.1. 7.1.2. 7.1.3. 7.1.4. 7.2. 7.2.1. 7.2.2. 7.2.3. CEPT Recommendation T/TE 07-02 E: CEPT Recommendation T/TE 07-04 E: CEPT Recommendation T/CD 08-01 E: CEPT Recommendation T/TE 08-04 E: CEPT Recom
20、mendation T/TE 08-06 E: Packetwitched data network: switched access (FS T/32) CEPT Recommendation T/SF 22 E: Recommendation of Test Procedures for Teletex (1988) Service intercommunication requirements for Teletex terminals Packet-switched data network: permanent access (FS T/31) Digital data circui
21、t (circuit switched data network) : provision of the OSIconnection-mode transport service in the T.70 case for Telemat c end systems (FS T/41) Teletex Service (1982) DEFINITIONS The terms used in this Recommendation are defined in the referenced CCITT Recommendations. ABBREVIATIONS The abbreviations
22、 used in this Recommendation are defined in the referenced CCIT Recommendations. SCENARIO DESCRIPTION Exchange of Teletex documents between two end systems, which are Teletex terminal equipments participat- ing in the international Teletex service. The overall operation of the Teletex service is def
23、ined in CCITT Recommendation F.200. CONFORMITY A Teletex equipment is in conformity with this Recommendation, if it follows the requirements that are contained in section 7. below. Note. The tests to be passed in order to check the conformance technically are laid down in CCITT Recommendation T.64 a
24、nd in CEPT Recommendation T/TE 07-02 E. LAYER DESCRIPTION Network dependent layers (1-4) Access from telephone netivork(s) The implementation of the telephone network access shall be fully in line with the provisions laid down and described in CCITT Recommendation T.70 together with CEPT Recommendat
25、ion T/TE 08-06 E. Access fiom packet switched netrvork(s) The implementation of the Packet Switched Public Data Network access shall be fully in line with the provisions laid down and described in CCIT Recommendation T.70 together with CEPT Recommenda- tion T/CD 08-01 E. Access fiom circuit switched
26、 network(s) The implementation of the Circuit Switched Public Data Network access shall be fully in line with the provisions laid down and described in CCIT Recommendation T.70 together with CEPT Recommenda- tion T/TE 08-04 E. Access fiom integrated services digital netivorlt(s) The implementation o
27、f the Integrated Services Digital Network access shall be fully in line with the provisions laid down and described in CCITT Recommendation T.70 together with CEPT Recommenda- tion T/TE 08-YY“. Network independent layers (5-7) Session layer description The implementation of the session layer shall b
28、e fully in line with the provisions laid down and described in CCITT Recommendation T.62 together with Part 2. of this CEPT Recommendation. Presentation layer description The implementation of the presentation layer shall be fully in line with the provisions laid down and described in CCITT Recommen
29、dation T.61. Application layer description The implementation of the application/service layer shall be fully in line with the provisions laid down and described in CCITT Recommendation T.60 together with Part 3. of this CEPT Recommendation. 1 * Under study. Edition of June 30, 1989=- 2326414 001004
30、8 O TITE 07-01 bis E Part 2, Page 1 1. 1.1. 1.2. 1.3. .4. 1.5. 1.6. -7. 1.8. 2. 2.1. Part 2 of CEPT Recommendation TITE 07-Olbis ADDITIONAL SESSION LAYER REQUIREMENTS (Amendments to CCITT Recommendation T.62) CEPT AGREED ADDITIONAL REQUIREMENTS - Paragraph 3.4.1.2a/T.62 If a normal document is trans
31、mitted from a Teletex terminal to the Teletex-telex conversion facility this parameter shall be indicated. - Paragraph 3.4.4.3lT.62 Note. Ail terminals must examine the non-basic terminal capabilities indicated in CSS or RSSP and not rely on a subsequent CDCL/RDCLP exchange to negotiate the use of a
32、ny capabilities from Table 3/T.62. - Paragraph 3.4.5.11T.62 Note. If CDCL contained also the indication of receiving capabilities of Table 3/T.62, the receiving terminal shall indicate these in RDCLP as far as it supports these capabilities. - Paragraph 3.4.12/T.62 - sending terminals shall limit th
33、e content size of CDUIs to 5000 octets or less; - although Recommendation T.62 requires for the possibilities to receive blocks of arbitrary size, the implementation of receiving-buffers is allowed, if the foilowing requirement is met: text-blocks of at least 10000 octets in a single CDUI must be ac
34、cepted. - Paragraph 3.2.3.21T.62 Note. A negative response to Command Session Start with reason parameter O000 O001 is mandatory for Teletex terminals if the receive storage capacity is below 2 k-octets. - Paragraph 3.2.10/T.62 In general it is not mandatory for terminals to respond to a request (vi
35、a a “Request Session Function” in RSSP or RSUI) for change of control. However, a calling terminal must be able to allow the called equipment to send document(s) by giving change of control (CSCC). The choice of whether or not CSCC is sent must be left to the operator. - Paragraph 3.3.2.10/T.62 In g
36、eneral the session protocol does allow the use of more than one Session connection per transport connection. In order to avoid ambiguities in case of linking parts of a document which might be necessary, the calling terminal may only use this possibility if the unambiguity of the document linking in
37、formation is guaranteed at both communication parties. - Paragraph 3.4.3/T.62 The sink must not reject the reception of a document continuation because of the evaluation of document linking information. The possibility to reject a CDC because of syntax errors is not touched upon by this rule. NATION
38、AL REQUIREMENTS - Paragraph 5.7.2.13/T.62 , A) The T.35 country code for Germany and Austria shall not be used in the first byte of this parameter. Edition of June 30, 1989 ;Y O 2326434 O030049 2 I- I T/TE 07-01 bis E Part 2, Annex 1, Page 1 Annex 1 to Part 2 of CEPT Recommendation T/TE 07-01bis (Th
39、is Annex forms part of the Recommendation.) Whenever a Teletex terminal intends to access the Teletex directory service of the Deutsche Bundespost, the rules laid down in this Annex shall be obligatory. Use of the session protocol for ititerivorking with the automatic Teletex directorj service 1. GE
40、NERAL An automatic directory service to which every Teletex subscriber has access has been established by the Deutsche Bundespost for providing information concerning telex and Teletex subscribers (i.e. call numbers, identification addresses) and miscellaneous (e.g. call charges, country identificat
41、ion codes). The procedure of such a dialogue is described in section 3. 2. REQUEST FOR INFORMATION The request for information will have to be provided by the subscriber in a format specified in section 4 and transmitted as a “normal document” to the directory service. After transmission, the direct
42、ion of transmission has to be changed by procedure elements CSCC and RSCCP. When the right of sending text has been handed over (by CSCC) to the directory system, the session connection may be terminated, for charge reasons, by the requesting terminal (by CSA) only upon reception of a minimum of fou
43、r Teletex pages. This does not affect the possibility of terminating the session connection in case of errors or inactivities lasting more than 60 seconds. The directory system replies to the request for information in the form of an “operator document”, whenever possible. If the request for informa
44、tion is answered from a manually operated station, this will be indicated to the subscriber in the form of an “operator document”. Then the permission to send will be returned to the Teletex terminal which will terminate the call. If a call-back from a manually operated station of the directory serv
45、ice is necessary, this will be handled within the scope of a normal Teletex call. The message will be identified as “operator document”. O O Edition of June 30, 1989 *- 2326414 OOLOO50 9 w TITE 07-01 bis E Part 2, Annex 1, Page 2 3. EXAMPLE DIAGRAM FOR THE SEQUENCE OF EVENTS OF A REQUEST FOR INFORMA
46、TION Teletex terminal Directory system CARRIED OUT WITHIN THE SCOPE OF THE TELETEX PROTOCOL Call establishment of the levels 1-4 css -yb 4/ RSSP . CSUI/CDS (Normal document) b CSUI/CDUT yb Request for information Format specification (see section 4.) CSUI/CDE y cscc -+ RSUI/RDEP with parameter “requ
47、est session functions” 4- RSCCP CSUI/CDS (Operator document) CSUI/CDUI Info/notification 4- 1. Required info or notification based upon info 2. Notification that the request .for info will be answered with a call-back. RSUI/RDEP + -+ RSCCP - CSUI/CDE 4-.- cscc Edition of June 30, lgr- . 4. m 2326434
48、 0030053 O m T/TE 07-01 bis E Part 2, Annex 1, Page 3 FORMAT SPECIFICATION In order to request information from the automatic directory service, a document has to be compiled as described below. The document may comprise a maximum of one page. Two types of requests to the automatic directory service
49、 are possible: first, the “subscriber request” and second, the “general request”. 4.1. Subscriber request The structure of the document (type: “normal document”) is as follows (max. 1 page) 1st line: 2nd line: Country/network 3rd line: Space line 4th line: a) Teletex or telex number Type of request (t = subscriber request) or b) Name/domicile 4.2. General request The structure of the document (type: “normal document”) is as follows (max. 1 page): 1st line: 2nd line: General text Type of request (a = general request) (e.g. please inform us a
