Operating system name and version: Centos 6.8 x64
Version of smsd: 3.1.15
Smsd installed from: sources / package repository / from elsewhere... : Source
Name and model of a modem / phone: Huawei E1731
Interface: serial / USB / some adapter... USB

Hi,

I have version 3.1.15 running fine. I tried to create prepaid balance and validity check through GSM1.cmdfile under /var/spool/sms/regular_run/ folder. I am able to get GSM1.statfile as following.

2017-02-15 23:08:05,5, GSM1: CMD: AT+CUSD=1,"AA986C3602",15: OK +CUSD: 0,"C2301B249DEB4030170C06838114453C3C2DCFEB4033D80B167BC960311C4831A587E9F5B90E141C5293D622487184C774A018ED0593BD64B0180EA438C2653A902CF782DD5E32580C075240D961B70E34A5568945271534851687C92013",15

I am looking for a script which can decode PDU reply. Can you please help me with this solution ?

Regards
Chakri

You can use a modem setting for automatic decoding:
ussd_convert = 2

Also here is a PDU Converter available in this forum, it has USSD Entry/Display field and defaults to GSM 7bit packet format.

And the smsd can be used for encoding and decoding ( smsd -D PDU... ), if necessary by some script, but in your case modem setting should be good.