�1���� Introduction
�2����
Basic interworking service
������� 2.1���� Types of interworking
������� 2.2���� Methods of interworking
�3����
Telex access to a conversion facility (CF)
������� 3.1���� One-stage selection
������� 3.2���� Two-stage selection
�4����
Delivery procedure to Teletex from a CF
������� 4.1���� Service principles
������� 4.2���� Text delivery
Annex� A� �� Reactions to abnormal
conditions during the telex input
������� A.1���� Telex connection clearing without the end of input signal
������� A.2���� Telex subscriber pausing during input of address information
������� A.3���� Telex subscriber stopping transmission without sending the end
of input signal
������� A.4���� Telex subscriber sending a WRU signal to the conversion facility
during text input
������� A.5���� Telex subscriber sending a text after the end of input signal
������� A.6���� Telex subscriber clearing after the end of input signal and
before the input message acknowledgement signal
������� A.7���� Telex subscriber sending national variants of ITA2 characters
(figure shift characters of F, G and H)
������� A.8���� The conversion facility detecting signal distortion during
text input
������� A.9���� Telex subscriber sending a bell signal
������ A.10���� CFs storage capacity overflow during telex message input
������ A.11���� Request of optional facilities, when not provided by the CF