Welltech Dialogic SS7 Protocols ISUP - Manual (Page 38)

Section 6 Interface to Application
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Mandatory parameters
• Information indicators
Optional parameters
• Calling party category
• Calling party number
• Call reference
• Access transport
The following optional parameters are supported in ITU-T mode:
• Connection request
• Network specific facility
• Parameter compatibility information
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
6.5.16 Loop Back Acknowledgement Request
This primitive is used by the application to indicate that a continuity check
loop has been applied to the circuit.
When this primitive is received by the ISUP module, an LPA message will be
sent to the network.
Message type
LPA (Loop Back Acknowledgement Message)
Mandatory parameters
None
Optional parameters
None