GTT SCPVAL Action

The SCCP MAP Validation (SCPVAL) is a GTT Action that performs validation check on the of vSTP map parameters. This action is part of SS7 security firewall.

For example, in vSTP few of the map parameters must be same as either SCCP CdPA or CgPA. The GTT SCPVAL action do this validation check with a comparison between SCCP parameters and the map digits.

Note:

The SCPVAL action is applicable only for the following messages coming to the vSTP:

MO-FSM (MAP version 2 or 3)
MT-FSM (MAP version 3)

The SCPVAL action has the following set of parameters to execute the functionality:

Parameter Name	Description	Value
SPRM	Define the SCCP parameter value. It is a mandatory parameter.	The value can be either of the following: CGGTA CDGTA
TPRM	Define the TCAP parameter value. It is a mandatory parameter.	The value can be either of the following: SMRPOA SMRPDA
NDGT	Specifies the number of digits that needs to be matched between SCCP parameter and MAP parameter. This is an optional parameter.	Value: Any digit between 1-21 All Default value: All
USEICMSG	Specifies whether to retrieve the data for comparison from the original message or from the post-GTT message.	The value can be either of the following: OFF: Use original message as received by the SCCP. ON: Use post-GTT message that is, after possible EPAP/GTT translation/modification data has been applied.
UIMREQD	Specifies if an event has be generated in case of GTT action failure.	The value can be either of the following: ON: Event to be generated OFF: No event to be generated
DEFACTID	Defines the default action that is performed when SCPVAL GTT action fails.	String value