Identifies the required transmission level when a non-standard interface is required.
NOTE 1: This field should contain a one character plus or minus (+ or -), a two digit number, a decimal point, a one digit number and one character.
NOTE 2: Positions 1 through 6 are used to specify the transmission level to be received at the provider switch.
NOTE 3: Positions 7 through 12 are never used on this field and are reserved for future use.
NOTE 4: Transmission specifications may be described in provider tariffs and/or in technical reference publications.
USAGE: This field is conditional.
NOTE 1: Optional when the ACT field on the ASR Form is "N" or "C" and the PSL field on the ASR Form is not populated, otherwise prohibited.
DATA CHARACTERISTICS: 12 alpha/numeric characters (including preprinted T, R and 2 decimal points)
EXAMPLE: - 0 3 . 5 T . R