Advanced GT Modification Feature

This feature allows the EAGLE to modify other fields of an MSU in addition to the translation type, destination point code, called party point code, called party SSN, routing indicator, numbering plan, and nature of address indicator when the MSU requires further global title translation and the translation type is to be replaced.

The numbering plan, nature of address indicator, and the prefix or suffix digits, in the called party address or calling party address portion of outbound MSUs can be changed with this feature to make the MSU more compatible with the network that the MSU is being sent to and to ensure that the MSU is routed correctly. These changes are made after the global title translation process, but before the MSU is routed to its destination.

This feature requires that service modules are installed in the EAGLE. Adding a Service Module shows the type of service modules that can be used depending on which features are on or enabled.

For the EAGLE to be able to make these changes to the called party address or calling party address portion of the MSU, the one of the Advanced GT Modification features shown in the following list must be enabled with the enable-ctrl-feat command.

893021801 - AMGTT - provides GT modification to both the called party address and the calling party address of SCCP messages. This part number can be specified only if no Advanced GT Modification feature is currently enabled.
893021802 - AMGTT CdPA Only - provides GT modification to the called party address of SCCP messages only. This feature and its part number is shown in the rtrv-ctrl-feat output only if the MGTT feature from previous releases was turned on when the Eagle was upgraded to the release containing the Advanced GT Modification feature. This part number cannot be specified with the enable-ctrl-feat command.
893021803 - AMGTT CgPA Upgrade - provides GT modification to the calling party address and called party address of SCCP messages. This part number can be specified only if the AMGTT CdPA Only feature (part number 893021802) is enabled.

Perform the Activating the Advanced GT Modification Feature procedure to enable the Advanced GT Modification feature.

After the Advanced GT Modification feature has been enabled, the parameters shown in this list are used to modify the calling party address or called party address of the SCCP message.

gtmodid – The name of the GT modification identifier
ntt – The new translation type. None of the Advanced GT Modification features have to be enabled to create an entry in the GT modification table that contains only the ntt parameter value.
nnp – The new numbering plan
nnai – The new nature of address indicator
npdd – The number of digits to be deleted from the beginning of the Global Title Address digits (the prefix digits)
npds – The digits that are being substituted for the prefix digits
nsdd – The number of digits to be deleted from the end of the Global Title Address digits (the suffix digits)
nsds – The digits that are being substituted for the suffix digits
cgpassn – The calling party subsystem number
gt0fill – Specifies whether the final 0 of the global title address is considered a valid digit in the global title address or as a filler during the GT modification process when going from GTI=2 to GTI=4. If the final 0 is considered as a filler, then it is ignored during the GT modification process. This parameter has two values, on or off. If the gt0fill value is on, the final 0 in the global title address is a filler. If the gt0fill value is off, the final 0 in the global title address is a valid digit.
ngti – The new global title indicator value
precd – Specifies whether the prefix or suffix digits take precedence when modifying the received global title address. This parameter can be specified only when the npdd/npds and the nsdd/nsds parameters are specified. This parameter has two values, pfx and sfx. When the precd value is pfx, the prefix digits (npdd/npds values) are processed before the suffix digits (nsdd/nsds) values.When the precd value is sfx, the suffix digits (nsdd/nsds values) are processed before the prefix digits (npdd/npds) values
cggtmod - The calling party GT modification indicator. This parameter specifies whether or not calling party global title modification is required. This parameter can be specified only if the AMGTT or AMGTT CgPA Upgrade feature is enabled. The cggtmod parameter can also be specified for when provisioning a linkset to indicate that calling party global title modification is required for SCCP traffic on the linkset. This parameter is configured with the ent-gtt, chg-gtt, ent-gta, or chg-gta commands.

All the parameters, except the cggtmod parameter, are configured as an entry in the in the GT modification table using either the ent-gtmod or chg-gtmod commands. Each entry in the GT modification table is identified by the gtmodid parameter. The EAGLE can contain 100,000 GT modification identifier entries. Each entry is referenced in the GTT, GTA, and GTT actions tables. Perform one of these procedures to configure these parameters.

To configure the cggtmod parameter, perform one of these procedures.