Understand basic Public Safety definitions and terms.
Definition:
A communications path that takes traffic farther than the ultimate destination and then routes it back. The cost of transmission to the more remote...
Destination Point Code. Part of the label in a signaling message that uniquely identifies, in a signaling network, the signaling destination point...
An ordered set of instructions for finding a destination. Route lists exist for each ESSID/ESN combination.
The set of "star" codes that the PSAP can choose to assign to different destinations (like Poison Control). The numbers are PDSAP dependent, not ESN...