CONTENTS

 1     Scope
 2     General
 3     Service requirements
        3.1     Message identification
        3.2     Service signals
        3.3     Duration of message storage
        3.4     Maximum message length and duration
        3.5     Store full indication
        3.6     End of transaction and end of message signal
        3.7     Input transaction accepted
        3.8     Message security
        3.9     Advice of non-delivery/delivery
       3.10     Call records
       3.11     Incomplete message
 4     Facilities
        4.1     Single address
        4.2     Multi-address
        4.3     Follow-on messages
        4.4     Classes of delivery
        4.5     Cancellation
        4.6     Address correction
 5     Quality of Service
        5.1     Loss probability in the store and forward procedure
        5.2     Error protection
        5.3     Duration of service
        5.4     Number of circuits
        5.5     Minimum storage capacity
 6     Access principles
 7     Access procedures
        7.1     General
        7.2     Access from a telex subscriber
        7.3     Service request
        7.4     Message input
 8     Contents of the address line
        8.1     Address line
 9     Abnormal conditions during message input
10     Message status enquiry
       10.1     General procedures
       10.2     Status enquiry information field content
       10.3     The status report
       10.4     Status report field content
11     Delivery procedure
       11.7     Procedures for delivery of messages
12     Notification procedures
       12.1     Types of notification
       12.2     Notification delivery procedures
13     Delivery retry procedures
       13.3     Recorded message from the called subscriber
14     Contents of delivery/non-delivery notifications
15     Internationally interconnected store and forward units