Identifies that the multiplexer or node is at the primary location (PRILOC /ACTL /FACTL).
VALID ENTRIES:
Y = Primary Location (PRILOC/ACTL/FACTL)
NOTE 1: Absence of an entry in the PI field assumes that the location is a secondary location (SECLOC ).
NOTE 2: Only one PI field entry per request can be identified except when ordering Ring service .
USAGE: This field is conditional.
NOTE 1: Required when the PQPR field on the Trunking, Transport, Ring, ARI, or EUSA Form is populated, otherwise prohibited.
DATA CHARACTERISTICS: 1 alpha character
EXAMPLE: Y