R.2
|
Element error rate
|
R.4
|
Methods for the separate measurements of the degrees of various types of telegraph distortion
|
R.5
|
Observation conditions recommended for routine distortion measurements on international telegraph circuits
|
R.9
|
How the laws governing distribution of distortion should be arrived at
|
R.11
|
Calculation of the degree of distortion of a telegraph circuit in terms of the degrees of distortion of the component links
|
R.20
|
Telegraph modem for subscriber lines
|
R.21
|
9600 bit/s modem standardized for use in the telegraph TDM system
|
R.22
|
Data over voice 19 200 bit/s modem standardized for use on telephone network subscriber lines
|
R.30
|
Transmission characteristic for international VFT links
|
R.31
|
Standardization of AMVFT systems for a modulation rate of 50 bauds
|
R.35
|
Standardization of FMVFT systems for a modulation rate of 50 bauds
|
R.35bis
|
50-baud wideband VFT systems
|
R.36
|
Coexistence of 50-baud/120-Hz channels, 100-baud/240-Hz channels, 200-baud/360-Hz or 480-Hz channels on the same voice-frequency telegraph system
|
R.37
|
Standardization of FMVFT systems for a modulation rate of 100 bauds
|
R.38A
|
Standardization of FMVFT system for a modulation rate of 200 bauds with channels spaced at 480 Hz
|
R.38B
|
Standardization of FMVFT systems for a modulation rate of 200 bauds with channels spaced at 360 Hz usable on long intercontinental bearer circuits generally used with a 3-kHz spacing
|
R.39
|
Voice-frequency telegraphy on radio circuits
|
R.40
|
Coexistence in the same cable of telephony and super-telephone telegraphy
|
R.43
|
Simultaneous communication by telephone and telegraph on a telephone-type circuit
|
R.44
|
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
|
R.49
|
Interband telegraphy over open-wire 3-channel carrier systems
|
R.50
|
Tolerable limits for the degree of isochronous distortion of code-independent 50-baud telegraph circuits
|
R.51
|
Standardized text for distortion testing of the code-independent elements of a complete circuit
|
R.51bis
|
Standardized text for testing the elements of a complete circuit
|
R.52
|
Standardization of international texts for the measurement of the margin of start-stop equipment
|
R.53
|
Permissible limits for the degree of distortion on an international 50-baud/120-Hz VFT channel (frequency and amplitude modulation)
|
R.54
|
Conventional degree of distortion tolerable for standardized start-stop 50-baud systems
|
R.55
|
Conventional degree of distortion
|
R.56
|
Telegraph distortion limits to be quoted in Recommendations for equipment and transmission plans
|
R.57
|
Standard limits of transmission quality for planning code-independent international point-to-point telegraph communications and switched networks using 50-baud start-stop equipment
|
R.58
|
Standard limits of transmission quality for the gentex and telex networks
|
R.58bis
|
Limits on signal transfer delay for telegraph, telex and gentex networks
|
R.59
|
Interface requirements for 50-baud start-stop telegraph transmission in the maritime mobile satellite service
|
R.60
|
Conditions to be fulfilled by regenerative repeaters for start-stop signals of International Telegraph Alphabet No. 2
|
R.62
|
Siting of regenerative repeaters in international telex circuits
|
R.70
|
Designation of international telegraph circuits
|
R.70bis
|
Numbering of international VFT channels
|
R.71
|
Organization of the maintenance of international telegraph circuits
|
R.72
|
Periodicity of maintenance measurements to be carried out on the channels of international VFT systems
|
R.73
|
Maintenance measurements to be carried out on VFT systems
|
R.74
|
Choice of type of telegraph distortion-measuring equipment
|
R.75
|
Maintenance measurements on code-independent international sections of international telegraph circuits
|
R.75bis
|
Maintenance measurements of character error rate on international sections of international telegraph circuits
|
R.76
|
Reserve channels for maintenance measurements on channels of international VFT systems
|
R.77
|
Use of bearer circuits for voice-frequency telegraphy
|
R.78
|
Pilot channel for AMVFT systems
|
R.79
|
Automatic tests of transmission quality on telegraph circuits between switching centres
|
R.80
|
Causes of disturbances to signals in VFT channels and their effect on telegraph distortion
|
R.81
|
Maximum acceptable limit for the duration of interruption of telegraph channels arising from failure of the normal power supplies
|
R.82
|
Appearance of false calling and clearing signals in circuits operated by switched teleprinter services
|
R.83
|
Changes of level and interruptions in VFT channels
|
R.90
|
Organization for locating and clearing faults in international telegraph switched networks
|
R.91
|
General maintenance aspects for the maritime satellite telex service
|
R.100
|
Transmission characteristics of international TDM links
|
R.101
|
Code and speed dependent TDM system for anisochronous telegraph and data transmission using bit interleaving
|
R.102
|
4800 bit/s code and speed dependent and hybrid TDM systems for anisochronous telegraph and data transmission using bit interleaving
|
R.103
|
Code and speed-dependent TDM 600 bit/s system for use in point-to-point or branch-line muldex configurations
|
R.105
|
Duplex muldex concentrator, connecting a group of gentex and telex subscribers to a telegraph exchange by assigning virtual channels to time slots of a bit-interleaved TDM system
|
R.106
|
Muldex unit for telegraph and low speed data transmission using TDM bit interleaving with an aggregate bit rate higher than 4800 bit/s
|
R.111
|
Code and speed independent TDM system for anisochronous telegraph and data transmission
|
R.112
|
TDM hybrid system for anisochronous telegraph and data transmission using bit interleaving
|
R.113
|
Combined muldex for telegraphy and synchronous data transmission
|
R.114
|
Numbering of international TDM channels
|
R.115
|
Maintenance loops for TDM-systems
|
R.116
|
Maintenance tests to be carried out on international TDM systems
|
R.117
|
End-to-end error performance for telegraph, telex and gentex connections involving regenerative equipment
|
R.118
|
Performance and availability monitoring in regenerative TDM
|
R.120
|
Tolerable limits for the degree of isochronous distortion of code-independent telegraph circuits operating at modulation rates of 75, 100 and 200 bauds
|
R.121
|
Standard limits of transmission quality for start-stop user classes of service 1 and 2 on anisochronous data networks
|
R.122
|
Summary of transmission plans for rates up to 300 bauds
|
R.140
|
Definitions of essential technical terms in the field of telegraph transmission
|
R.150
|
Automatic protection switching of dual diversity bearers
|
