Operating system name and version: Windows 7(cygwin)
Version of smsd: 3.1.15
Smsd installed from: sources
Name and model of a modem / phone: Grameenphone
Interface: USB

This is my conf file:

devices = GSM1
logfile = /var/log/smsd.log
loglevel = 7

device = /dev/ttyS3
incoming = yes
#pin = 1111

regular_run_cmd = AT+CUSD=1,"*124#",0;
regular_run_statfile = /var/spool/sms/GSM1_regular_run_statfile
regular_run_logfile = /var/log/smsd_regular_run.log
regular_run_interval = 30
'smsdconf' Syntax Highlight powered by GeSHi

This is what I get from smsd.log:

& from smsd_regular_run.log:

I've tried with 15,32 instead of 0. But still not getting the expected result. So what should I do now?

N.B: SMS send & receive is working perfectly. So I guess there's no problem with my port/modem or installation of Smsd.