Identifies the required transmission level when a non-integer and/or nonstandard interface is required at the SECLOC .
NOTE 1: This information should be the same as the SECTLV field on the ASR .
USAGE: This field is conditional.
NOTE 1: Required when populated on the ASR, otherwise prohibited.
DATA CHARACTERISTICS: 12 alpha/numeric characters (including 2 decimal delimiters,T and R)
EXAMPLE: + 0 4 . O T - 0 3 . 5 R