1、CEPT T/CD*04-O1*E 79 W 232b414 0003b23 2 KI 04-01 Page 1 E Recommendation T/CD 04-01 E (Ostende 1979) concerning the requirements for permission to connect non-PTT equipment to public data networks using X.21 or X.21 bis interfaces Recommendation proposed by Working Group T/WG 10 “Data Communication
2、” (CD) Text of the Recommendation adopted by the “Telecommtmications” Commission: “The Conference of European Post and Telecommunications Administrations, Considering - that public data networks are implemented or will be implemented in the future; - that harmonization of requirements for permission
3、 to connect non-PTT equipment is essential; - that the administrative procedure for approvals are covered in Recommendation T/SF 13. Recommends the view that the following technical information must be obtained in order that Administrations may determine whether permission to connect to public data
4、networks may be given.” Note: X.25 DTE are not covered by this document. 0 7 Edition of March 15, 1986 I ! CEPT T/CD*04-OL*E 79 232b4L4 0003622 4 U T/CD 04-01 E Page 3 1. GENERAL INFORMATION D TE type : Factory No.: Manilfncturer (name, address, telephone esl. FI* (b) How quickly can the DTE respond
5、 to an incoming call? (c) Is the DTE capable of handling Call progress signals and other DCE-provided information? ms. * Cross applicable. Edition of March 15. 1986 T/CD04-01 E Page 10 CEPT T/CD*04-O1*E 79 2326414 0003629 7 = n cc) W Y cd U (li W c o W 3 8 z 8 O U ru O .E! o 2 .,-I Y a n Pl W cd c Y
6、 3, M s 8 U 3 u .,-I 2 ru O 3 cd d bn F: I4 O Fi n s cd Y (li W cn 3 .- 2 (li (li rn W b;, k u =I ru O d O 3 a W 0 i: 2 3 a W W V 8 cd s cd U rn W 2 tl u n a W o 3 z W b O U W U cd Y (li h O d cd M us h 3 iu W Y cd Y m W 9 x 2 W O U s cd tl (li cci O F: cd d V & ir: - iu W cd h a Y U (li W 3 W u n r
7、u O d O .,-I c o 2 v3 b F Edition of March 15, 1986 _ - I CEPT T/CD*04-01*E 79 2326414 0003630 3 1. T/CD 04-01 E Page 11 6.5. X.2lbis time-outs How long time does the DTE wait to turn circuit 108 from OFF to ON after incoming call, to indicate “Call accepted“. ms How long does the DTE wait for ON co
8、ndition on circuit 106 after the appearance off the ON condition on circuit 105? Maximum ms Minimum ms 6.6. Additional for both X.21 and X.2lbis DTEs What code(s) and block structure(s) are used? What error-checking method(s) is (are) used? How many retransmissions are made in the case of transmissi
9、on errors? How are transmission errors indicated? 7. ELECTRICAL CHARACTERTSTICS The nominal values are laid down in the relevant CCITT-Recommendations. 7.1. Generator (a) Integrated circuit? Cross applicable. If yes, indicate type and manufacturer: Edition of March 15, 1986 TfCD 04-01 E Page 12 (b)
10、Discrete components? Cross applicable. If yes, indicate test results of the following characteristics: Open circuit measurement Binary state O: V Binary state 1: V Test termination measurement Binary state O: Binary state 1 : V V Short-circuit measurement Binary state O: mA Binary state 1 : mA Power
11、-off measurement Leakage current: PA Transition time measurement 0-1 transition: PS 1-0 transition: P 7.2. Receiver (a) Integrated circuit? Cross applicable. If yes, indicate type and manufacturer: (b) Discrete components? Cross applicable. If yes, indicate test results of the following characterist
12、ics: Edition of March 15, 1986 CEPT T/CD*04-OL*E 79 2326434 0003632 7 W r T/CD 04-01 E Page 13 t Line 3 I Input voltage-current measurement Binary state O: mA Binary state 1: mA DC sensitivity measurement Binary state O: mV Binary state 1: mV 8. MECHANICAL CHARACTERLSTICS OF THE DTE INTERFACE CONNEC
13、TOR 15-pin connector (IS0 4903) 9. U Cross applicable. 25-pin connector (IS0 21 10) 34-pin connector oso 2593) n o 37-pin connector (IS0 4902) Interface adaptor to be used? If yes, indicate kind of adaption: Cross loops applied. o Indicate other loops that can be used by the DTE: Edition of March 15
14、, 1986 7 I CEPT T/CD*04-OL*E 79 I 2326414 0003b33 9 S T/CD 04-01 E Page 14 10. ELECTRICAL SAFETY Indicate ail recognized national and/or international safety standards to which the DTE conforms. Indicate classes/types of equipment referred to in these standards where applicable. Statements of compli
15、ance with the above standards are taken to be legally binding. Has the DTE already received electrical safety approval according to the above standards? Cross applicable. If yes, indicate names, addresses of all approving authorities and approval code numbers which the DTE has received : 11. RADIO I
16、NTERFERENCE SUPPRESSION Indicate all recognized national and/or international standards to which the DTE conforms. Statements of compliance with the above standards is taken to be legally binding. Has the DTE already received appropriate approvals according to the above standards? Cross applicable. If yes, indicate names, addresses of approving authorities and approval code numbers which the DTE has received : The above particulars have been submitted by Signature: Telephone: Date: Edition of March 15, 1986
