3.28 Information indicators (national use) The format of the information indicators parameter field is shown in Figure 28. 8 7 6 5 4 3 2 1 1 H G F E D C B A 2 P O N M L K J I Figure 28/Q.763 - Information indicators parameter field The following codes are used in the information indicators parameter field: bits BA Calling party address response indicator 0 0 calling party address not included 0 1 calling party address not available 1 0 spare 1 1 calling party address included bit C Hold provided indicator 0 hold not provided 1 hold provided bits E-D Spare bit F Calling party's category response indicator 0 calling party's category not included 1 calling party's category included bit G Charge information response indicator 0 charge information not included 1 charge information included bit H Solicited information indicator 0 solicited 1 unsolicited bits L-I Spare bits P-M Reserved