M39 传真电报设备 标准查询与下载

ITU-T R.44 FRENCH-1988 连接到电传打字机网络的,间隔为120 Hz的调频音频复用电报(VFT)信道上使用的6单元同步时分2-3信路的多路电报系统

The CCITT, considering that synchronous modulation enables a larger number of telegraph channels to be constituted by time-subdivision of a standardized telegraph channel (Recommendation R.35); that such an increase may be of interest in the case of long submarine cables of the telephone type in view of the resulting economies.

6-UNIT SYNCHRONOUS TIME-DIVISION 2-3-CHANNEL MULTIPLEX TELEGRAPH SYSTEM FOR USE OVER FMVFT CHANNELS SPACED AT 120 Hz FOR CONNECTION TO STANDARDIZED TELEPRINTER NETWORKS

ITU-T S.14-1988 有关字母电报设备的基本技术术语的定义

The CCITT,considering(a) that in a radiotelegraph system in which a radio teleprinter transmitter broadcasts messages simultaneously to a number of receiving stations,this broadcast is sometimes required only by a restricted number of these stations;(b)that it is desirable in such cases to prevent the reception of the message at the other offices to avoid wastage of paper;(c) hat such wastage can be avoided by the use of selective calling systems whereby only those stations required to receive the transmission are connected whilst it is in progress;(d) that various technical methods are available for achieving this,using either pulse signalling (e.g. by dial),or signalling with 5-unit signals;(e) that a wide variety of systems may be devised based upon the methods in (d) above;(f) that such systems are normally used only for special services in which agreement can be reached on the particular type of system to be adopted.

SUPPRESSION OF UNWANTED RECEPTION IN RADIOTELEGRAPH MULTI - DESTINATION TELEPRINTER SYSTEMS

ITU-T S.14 SPANISH-1988 无线电报多址电传打字机系统中无用接收的抑制

The CCITT, considering that in a radiotelegraph system in which a radio teleprinter transmitter broadcasts messages simultaneously to a number of receiving stations, this broadcast is sometimes required only by a restricted number of these stations; that it is desirable in such cases to prevent the reception of the message at the other offices to avoid wastage of paper.

SUPPRESSION OF UNWANTED RECEPTION IN RADIOTELEGRAPH MULTI - DESTINATION TELEPRINTER SYSTEMS

ITU-T S.15-1988 用户电报网在50Bd下供数据传输使用

The CCITT,considering(a) that the telex network is well adapted for the economical transmission of data at fairly slow speeds,for the equipment required for binary transmission of data by telex stations,over and above the normal equipment,is relatively simple.

USE OF THE TELEX NETWORK FOR DATA TRANSMISSION AT 50 BAUDS

ITU-T S.15 FRENCH-1988 数据传输在50波特的用户电报网的使用

The CCITT, considering that the telex network is well adapted for the economical transmission of data at fairly slow speeds, for the equipment required for binary transmission of data by telex stations, over and above the normal equipment, is relatively simple.

USE OF THE TELEX NETWORK FOR DATA TRANSMISSION AT 50 BAUDS

ITU-T S.15 SPANISH-1988 数据传输在50波特的用户电报网的使用

The CCITT, considering that the telex network is well adapted for the economical transmission of data at fairly slow speeds, for the equipment required for binary transmission of data by telex stations, over and above the normal equipment, is relatively simple.

USE OF THE TELEX NETWORK FOR DATA TRANSMISSION AT 50 BAUDS

ITU-T S.18-1988 国际二号电码(ITA2)与国际五号电码之间的转换

1.1 The conversion of characters shall be as specified in Table 1/S.18.1.2 Annex A,together with Table A-1/S.18, provides information on alternative conversions that are in general use in some countries.

CONVERSION BETWEEN INTERNATIONAL TELEGRAPH ALPHABET No. 2 AND INTERNATIONAL ALPHABET No. 5

ITU-T R.58 FRENCH-1988 公众电报电路交换网和用户电报网的传输质量的标准限值

The CCITT, considering that to permit the sharing of responsibility for the maintenance of a high-standard of transmission between countries participating in the establishment of switched connections, it is necessary to specify limiting values of distortion at the international terminal exchanges; that on the other hand, to enable national switched networks to be interconnected, it is necessary to have a distribution plan of the telegraph distortion between national networks and the international junction circuits connecting up the international switching centres (international terminal switching centers).

STANDARD LIMITS OF TRANSMISSION QUALITY FOR THE GENTEX AND TELEX NETWORKS

ITU-T R.58 SPANISH-1988 公众电报电路交换网和用户电报网的传输质量的标准限值

The CCITT, considering that to permit the sharing of responsibility for the maintenance of a high-standard of transmission between countries participating in the establishment of switched connections, it is necessary to specify limiting values of distortion at the international terminal exchanges; that on the other hand, to enable national switched networks to be interconnected, it is necessary to have a distribution plan of the telegraph distortion between national networks and the international junction circuits connecting up the international switching centres (international terminal switching centers).

STANDARD LIMITS OF TRANSMISSION QUALITY FOR THE GENTEX AND TELEX NETWORKS

ITU-T R.73 FRENCH-1988 在音频复用电报(VFT)系统上进行的维护测量

The CCITT, in view of Recommendation R.72 on the periodicity of maintenance measurements to be made on international voice-frequency telegraph (VFT) channels, considering that it should be clearly laid down what maintenance measurements are indispensable to ensure the correct operation of VFT channels.

MAINTENANCE MEASUREMENTS TO BE CARRIED OUT ON VFT SYSTEMS

ITU-T R.73 SPANISH-1988 在音频复用电报(VFT)系统上进行的维护测量

The CCITT, in view of Recommendation R.72 on the periodicity of maintenance measurements to be made on international voice-frequency telegraph (VFT) channels, considering that it should be clearly laid down what maintenance measurements are indispensable to ensure the correct operation of VFT channels.

MAINTENANCE MEASUREMENTS TO BE CARRIED OUT ON VFT SYSTEMS

ITU-T R.74 FRENCH-1988 电报畸变测量设备的选择

The CCITT, in view of Recommendation R.90, considering that measurements of isochronous distortion made with the text specified in Recommendation R.51 bis should normally be applied to code-independent telegraph channels; that it may in principle be desirable to measure the distortion of telegraph channels in terms of start-stop distortion; that all important terminals of voice-frequency telegraph systems are equipped with isochronous distortionmeasuring equipment and that their replacement by start-stop instruments would be expensive.

CHOICE OF TYPE OF TELEGRAPH DISTORTION - MEASURING EQUIPMENT

ITU-T R.74 SPANISH-1988 电报畸变测量设备的选择

The CCITT, in view of Recommendation R.90, considering that measurements of isochronous distortion made with the text specified in Recommendation R.51 bis should normally be applied to code-independent telegraph channels; that it may in principle be desirable to measure the distortion of telegraph channels in terms of start-stop distortion; that all important terminals of voice-frequency telegraph systems are equipped with isochronous distortionmeasuring equipment and that their replacement by start-stop instruments would be expensive.

CHOICE OF TYPE OF TELEGRAPH DISTORTION - MEASURING EQUIPMENT

ITU-T R.77 FRENCH-1988 音频电报使用的承载电路

The recommendation illustrates the composition of an international voice-frequency telegraph (VFT) system and the nomenclature used.

USE OF BEARER CIRCUITS FOR VOICE - FREQUENCY TELEGRAPHY

ITU-T R.77 SPANISH-1988 音频电报使用的承载电路

The recommendation illustrates the composition of an international voice-frequency telegraph (VFT) system and the nomenclature used.

USE OF BEARER CIRCUITS FOR VOICE - FREQUENCY TELEGRAPHY

ITU-T S.7 SPANISH-1988 电传机马达的控制

The CCITT, considering that, in the case of public and private point-to-point circuits, it is desirable that the teleprinter motors should be started with the commencement of traffic signalling and stopped with the cessation of such signalling; that the general practice on such circuits is to utilize a time-delay device associated with the teleprinter which allows of such operation.

CONTROL OF TELEPRINTER MOTORS

ITU-T SERIE S SUPP 1 FRENCH-1988 双语（阿拉伯语/拉丁语）电传打字机的最低规格

Those recommendations were based on the principle that,in a given relation,the accounting rate consisted of terminal and transit shares which were the same for all the routes used.When a detour was used,the hypothetical terminal and transit shares had therefore to be reduced proportionally.The collection charges corresponded more or less to the amounting rates converted into national currents.

Minimal specifications for the bilingual (Arabic/Latin) teleprinter

ITU-T SERIE S SUPP 1 SPANISH-1988 双语（阿拉伯语/拉丁语）电传打字机的最低规格

Those recommendations were based on the principle that,in a given relation,the accounting rate consisted of terminal and transit shares which were the same for all the routes used.When a detour was used,the hypothetical terminal and transit shares had therefore to be reduced proportionally.The collection charges corresponded more or less to the amounting rates converted into national currents.

Minimal specifications for the bilingual (Arabic/Latin) teleprinter

ITU-T S.32 FRENCH-1988 依照推荐性规范S.30的200波特和300波特应答信号单位的起止设备

The CCITT, considering that start-stop machines are capable of receiving communications without the aid of an operator; that it may be necessary to verify the correct functionning of the line and of the distant terminal equipment.

ANSWER - BACK UNITS FOR 200- AND 300-BAUD START - STOP MACHINES IN ACCORDANCE WITH RECOMMENDATION S.30

ITU-T S.32 SPANISH-1988 依照推荐性规范S.30的200波特和300波特应答信号的起止设备

The CCITT, considering that start-stop machines are capable of receiving communications without the aid of an operator; that it may be necessary to verify the correct functionning of the line and of the distant terminal equipment.

ANSWER - BACK UNITS FOR 200- AND 300-BAUD START - STOP MACHINES IN ACCORDANCE WITH RECOMMENDATION S.30