sender-info
                   recipient-info
                   transponder-info

                   Each of these segments is repeatable.

                   Segment Name:   sender-info
                   Segment Code:           SIN
                   Data Elements:          encoding
                                           --may have up to 3 sub-elements; each containing
                                           --an encoding of the APDU-Encoding data type
                                           telecom-service-identifier
                                           telecom-service-address
                                           --the last two elements together form the
                                           --system-address

                                           --This segment may be followed by multiple SYI
                                           --segments to hold repeated instances of system-id
                                           --to correspond to the "aliases" parameter.


                   Segment Name:   recipient-info
                   Segment Code:           RIN
                   Data Elements:          encoding
                                           --may have up to 3 sub-elements; each containing
                                           --an encoding of the APDU-Encoding data type
                                           telecom-service-identifier
                                           telecom-service-address
                                           --the last two elements together form the
                                           --system-address

                                           --This segment may be followed by multiple SYI
                                           --segments to hold repeated instances of system-id
                                           --to correspond to the "aliases" parameter.


                   Segment Name:   transponder-info
                   Segment Code:           TIN
                   Data Elements:          encoding
                                           --may have up to 3 sub-elements; each containing
                                           --an encoding of the APDU-Encoding data type
                                           telecom-service-identifier
                                           telecom-service-address
                                           --the last two elements together form the
                                           --system-address

                                           --This segment may be followed by multiple SYI
                                           --segments to hold repeated instances of system-id
                                           --to correspond to the "aliases" parameter.