DLT – Specification for SMPP Interface Version 1.1 Change Historical past This table shows a history of major alterations for the document. Variation Date Description of Change one.0 26.08.2020 Initial SMPP doc published with supplemental TLV parameters 1.1 12.ten.2020 Extra DLT error codes extra with description 2 | P a http://freebulksmsapi85172.arwebo.com/20170115/pe-parameters-to-become-handed-on-smpp-protocol