Welltech Dialogic SS7 Protocols ISUP Manual de usuario Pagina 66

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Section 6 Interface to Application
66
Additional call information
This primitive is used by ISUP to indicate additional call information (other
than called address digits) during incoming call set-up.
Message type
INF (Information Message)
Mandatory parameters
Information indicators
Optional parameters
Access transport
Calling party category
Calling party number
Call reference
The following optional parameters are supported in ITU mode only:
Parameter compatibility information
Network specific facility
The following optional parameters are supported in ANSI mode only:
Business group
Charge number
Originating line information
Redirecting number
Redirection information
User to user information
6.6.16 Loop Back Acknowledgement Indication
Loop back acknowledgement indication
This primitive is used by ISUP to indicate to the application that a continuity
check loop has been applied to the circuit. When an LPA message is received
from the network by the ISUP module, this primitive will be sent to the
application.
Message type
LPA (Loop Back Acknowledgement Message)
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