CONTENTS

1 Procedures for the establishment of a national access information path between a start-stop mode DTE and a PAD
1.1 Access via a public switched telephone network or leased lines with V-Series interfaces
1.2 Access via a public switched data network or via leased lines with X-Series interfaces
2 Procedures for character interchange and service initialization between a start-stop mode DTE and a PAD
2.1 Format of characters used in the exchange of control information between start-stop mode DTE and a PAD
2.2 Procedures for initialization
3 Procedures for the exchange of control information between a start-stop mode DTE and a PAD
3.1 General
3.2 Procedures for virtual call control
3.3 Procedures for setting or changing the values of PAD parameters
3.4 Procedures for reading the values of one or several parameters by the start-stop mode DTE
3.5 Formats of PAD command signals and PAD service signals
3.6 Editing functions in the PAD
3.7 Procedure for request of status of the virtual call
4 Procedures for the exchange of user data between a start-stop mode DTE and a PAD
4.1 Data transfer state
4.2 Data from the start-stop mode DTE received by the PAD
4.3 Delivery of user data to the start-stop mode DTE
4.4 Data forwarding conditions
4.5 Procedure for the PAD to indicate to the start-stop mode DTE, by means of a PAD service signal, a temporary inability to accept additional information
4.6 Procedures for transmission of X-ON and X-OFF by the PAD
4.7 Procedures for reset
4.8 Procedure for indication of break
4.9 Escape from the data transfer state
4.10 Echo
4.11 Selection of the procedure on receipt of the break signal from the start-stop mode DTE
4.12 Selection of padding characters to be inserted after the character 0/13 (CR)
4.13 Selection of line folding
4.14 Procedure for the start-stop mode DTE to indicate to the PAD a temporary inability to accept additional information
4.15 Selection of linefeed insertion after carriage return
4.16 Selection of padding characters to be inserted after the character 0/10 (LF)
4.17 Editing of user data
4.19 Interleaving of echo and output
4.20 Display interrupt
5 Formats of additional PAD command signals and PAD service signals available in the extended dialogue mode
5.1 Format of the break PAD command signal
5.2 Format of the NUI ON and NUI OFF PAD command signals
5.3 Format of the language PAD command signal
5.4 Format of the help PAD command signal
5.5 Standard format of the help PAD service signal
6 Multi-Aspect PAD (MAP) operation in accordance with Recommendation X.8
6.1 Procedures required to support MAP
6.2 Formats of MAP command signals
6.3 Format of MAP service signals
6.4 Error conditions
6.5 Format of additional MAP command signals and MAP service signals available in the extended dialogue mode
Annex A PAD command signals and PAD service signals
Annex B PAD Time-outs
Annex C PAD service signals for extended dialogue mode
C.1 Possible PAD service signals text in Spanish for extended dialogue mode
C.2 Possible PAD service signals text in French for extended dialogue mode