Identifies the specific Trunk Group Number (TGN) for the link between the Serving Wire Center (SWC) of the tandem location and the TSP tandem location.
NOTE 1: Only one tandem provider trunk group number may be indicated on an ASR .
USAGE: This field is conditional.
NOTE 1: Required when the customer orders the FG D service with SS7 tandem signaling optional feature.
DATA CHARACTERISTICS: 4 numeric characters
EXAMPLE: 0 9 2 4
NOTE 1: This example illustrates the specific TGN parameter.