CONTENTS

�1���� Introduction
�2���� Scope
�3���� Methods of interworking
�4���� Access procedures from the international telex service
������� 4.1���� Call establishment
������� 4.2���� Determination of the calling telex address
�5���� Message deposit
�6� ���Clearing
�7���� Reaction of MSSFU to abnormal conditions during message input
������� 7.1���� Receipt of non-processable answerback
������� 7.2���� Pause during input of message text
������� 7.3���� Receipt of WRU signal during text input
������� 7.4�� ��Receipt of national variants of telex characters (Combinations 6, 7, 8 in figures case)
������� 7.5���� Receipt of ITA2 combination 10 in figures case (Bell signal)
������� 7.6���� Lack of storage capacity during message input
������� 7.7���� Clear by the telex subscriber without the EOT signal
������� 7.8���� Receipt of characters after the EOT signal
������� 7.9���� Receipt of clear signal after the EOT signal but before the ITD sequence
������ 7.10���� Service provided by the INMARSAT C system unavailable
�8���� Message delivery
�9���� Delivery notifications
������� 9.1���� Non-delivery notification
10���� Calls from MES to a subscriber of the international telex service
11���� MES-to-MES calls utilizing the international telex service