# HG changeset patch
# User Mychaela Falconia <falcon@freecalypso.org>
# Date 1691193702 0
# Node ID e3706ce1d01c3bb29a550a206bc06df01ec34996
# Parent  7da1ac6431dc1410180342bd9a64ea3aa9207356
CHANGES: document sms-pdu-decode -n option

diff -r 7da1ac6431dc -r e3706ce1d01c CHANGES
--- a/CHANGES	Fri Aug 04 23:24:36 2023 +0000
+++ b/CHANGES	Sat Aug 05 00:01:42 2023 +0000
@@ -1,3 +1,17 @@
+Changes in the current code since fc-host-tools-r19:
+
+* sms-pdu-decode utility got a new option for use cases outside of GSM 07.05
+  applications.  When SMS PDUs are exchanged over the AT command interface per
+  GSM 07.05, each hex PDU begins with an SC address field, followed by the
+  GSM 03.40 TPDU; the same holds for SMS PDUs stored on the SIM in EF_SMS.
+  In its original and default operation mode, sms-pdu-decode expects this SC
+  address field to be present at the beginning of each hex PDU it processes.
+  However, when invoked with -n option, sms-pdu-decode expects each hex PDU in
+  its input to be a pure GSM 03.40 TPDU, without SC address prefix.  This new
+  mode is not expected to be particularly useful on the mobile side of GSM, but
+  it is useful for development and testing of network-side SMSC software and
+  associated utilities.
+
 Changes from fc-host-tools-r18 to fc-host-tools-r19:
 
 * loadtools: new -Petmoff option for empowered users on the Pirelli DP-L10