TR TSY 000861 : ISSUE 1 SUPP 1

1 INTRODUCTION
2 LAYER 3 MESSAGES AND INFORMATION ELEMENTS
               FOR FEATURES
2.1 Message Functional Definitions
2.1.1 OVERVIEW
2.1.2 EXTENSION of Q.931 MESSAGES
2.1.2.1 ALERTing
2.1.2.2 CALL PROCeeding
2.1.2.3 CONNect
2.1.2.4 CONNect ACKnowledge
2.1.2.5 DISConnect
2.1.2.6 INFOrmation
2.1.2.7 PROGress
2.1.2.8 RELease
2.1.2.9 RELease COMplete
2.1.2.10 SETUP
2.1.2.11 SETUP ACKnowledge
2.1.3 ADDITIONAL Q.931 and Q.932 MESSAGES
2.1.3.1 HOLD
2.1.3.2 HOLD ACKnowledge
2.1.3.3 HOLD REJect
2.1.3.4 NOTIFY
2.1.3.5 RETrieve
2.1.3.6 RETrieve ACKnowledge
2.1.3.7 RETrieve REJect
2.1.4 NETWORK-SPECIFIC MESSAGES
2.1.4.1 KEY HOLD
2.1.4.2 KEY RELease
2.1.4.3 KEY SETUP
2.1.4.4 KEY SETUP ACKnowledge
2.2 Message Structure
2.2.1 OVERVIEW
2.2.2 MESSAGE TYPE
2.2.3 ADDITIONS TO OTHER EXISTING INFORMATION
               ELEMENTS
2.2.3.1 Locking shift
2.2.3.2 Called party number
2.2.3.3 Calling party number
2.2.3.4 Cause
2.2.3.5 Channel identification
2.2.3.6 Signal
2.2.3.7 Transit network selection
2.2.4 OTHER STANDARDIZED INFORMATION ELEMENTS
2.2.4.1 Endpoint identifier
2.2.4.2 Feature activation
2.2.4.3 Feature indication
2.2.4.4 Information request
2.2.4.5 Notification indicator
2.2.4.6 Redirecting number
2.2.4.7 Service profile identification
2.2.4.8 User-user
2.2.5 NETWORK-SPECIFIC INFORMATION ELEMENTS FOR
               FEATURES
2.2.5.1 Call appearance
2.2.5.2 Redirecting subaddress
2.2.5.3 Redirection number
3 GLOSSARY
4 REFERENCES
LIST OF FIGURES
Figure 2 - 1 General message organization example
Figure 2 - 2 Message type
Figure 2 - 3 Formats of information elements
Figure 2 - 4 Endpoint Identifier information element
Figure 2 - 5 Feature activation information element
Figure 2 - 6 Feature indication information element
Figure 2 - 7 Information request information element
Figure 2 - 8 Notification indicator information element
Figure 2 - 9 Redirecting number information element
Figure 2 - 10 Service Profile Identification information
               element
Figure 2 - 11 User-user information element
Figure 2 - 12 Call Appearance information element
Figure 2 - 13 Redirecting subaddress information element
Figure 2 - 14 Redirection number information element
LIST OF TABLES
Table 2 - 1 Messages
Table 2 - 2 ALERTing message content
Table 2 - 3 CALL PROCeeding message content
Table 2 - 4 CALL PROCeeding message content
Table 2 - 5 CONNect message content
Table 2 - 6 CONNect message content
Table 2 - 7 CONNect ACKnowledge message content
Table 2 - 8 DISConnect message content
Table 2 - 9 DISConnect message content
Table 2 - 10 INFOrmation message content
Table 2 - 11 INFOrmation message content
Table 2 - 12 PROGress message content
Table 2 - 13 RELease message content
Table 2 - 14 RELease COMplete message content
Table 2 - 15 RELease COMplete message content
Table 2 - 16 SETUP message content
Table 2 - 17 SETUP message content
Table 2 - 18 SETUP ACKnowledge message content
Table 2 - 19 HOLD message content
Table 2 - 20 HOLD message content
Table 2 - 21 HOLD ACKnowledge message content
Table 2 - 22 HOLD ACKnowledge message content
Table 2 - 23 HOLD REJect message content
Table 2 - 24 HOLD REJect message content
Table 2 - 25 NOTIFY message content
Table 2 - 26 RETrieve message content
Table 2 - 27 RETrieve message content
Table 2 - 28 RETrieve ACKnowledge message content
Table 2 - 29 RETrieve ACKnowledge message content
Table 2 - 30 RETrieve REJect message content
Table 2 - 31 RETrieve REJect message content
Table 2 - 32 KEY HOLD message content
Table 2 - 33 KEY RELEASE message content
Table 2 - 34 KEY SETUP message content
Table 2 - 35 KEY SETUP ACKnowledge message content
Table 2 - 36 Message types
Table 2 - 37 CCITT Recommendation Q.931 and Recommendation
               Q.932 defined Information Element Identifier
               Coding (Codeset 0)
Table 2 - 38 National-specific Information Element Identifier
               Coding (Codeset 5)
Table 2 - 39 Network-specific Information Element Identifier
               Coding (Codeset 6)
Table 2 - 40 CCITT-standardized cause values
Table 2 - 41 Network-specific cause values