Fixed Bridge List
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...
Definition:
A telephone switching center that contains the equipment to provide phone service to users in a particular geographic area. A central office may serve more than one prefix; there may be more than one central office located in the same building. Central Office equipment is primarily switching equipment that routes calls, provides dial tone, busy signal,
and ringing. Also known as End Office.