BLOCK - Blocking Options

Identifies the arrangements that the customer wishes to order from the provider for OutWATS or the originating side of two-way WATS.

VALID ENTRIES:

A = Block 10XXX or 101XXXX/Allow 950 & 9YY

B = Block 950/Allow 10XXX or 101XXXX & 9YY

C = Block 10XXX or 101XXXX, 950 & 9YY

D = Allow 10XXX or 101XXXX, 950 & 9YY

E = Block 9YY/Allow 10XXX or 101XXXX & 950

F = Block 10XXX or 101XXXX & 9YY/Allow 950

G = Block 950 & 9YY/Allow 10XXX or 101XXXX

H = Block 10XXX or 101XXXX & 950/Allow 9YY

USAGE: This field is conditional.

NOTE 1: Optional for originating service, otherwise prohibited.

DATA CHARACTERISTICS: 1 alpha character

EXAMPLE: A