Welltech Dialogic SS7 Protocols ISUP Manuale Utente Pagina 61

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Dialogic
®
SS7 Protocols ISUP Programmer's Manual Issue 15
61
6.6.7 Continuity Indication
This primitive is used by ISUP to convey information about whether or not a
continuity test has succeeded.
Message type
COT (Continuity Message)
Mandatory parameters
Continuity indicators
Optional parameters
None
6.6.8 End-to-End Message Indication
This primitive is used by ISUP for end-to-end signaling.
Message type
PAM (Pass Along Message)
Mandatory parameters
Message data
Optional parameters
None
6.6.9 Exit Indication
Note: This message is only applicable to ANSI operation
An Exit Message may be received in the backwards direction from a gateway
exchange before Address Complete to indicate that call setup information has
successfully been passed to an adjacent network.
Message type
CPG (Call Progress Message)
Mandatory parameters
Event information
Must be coded as value 0x7d (defined as ‘spare’ by ANSI T1.113.3), to
indicate Exit.
Optional parameters
Outgoing trunk group number
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