Operating system name and version: CentOs 6.3
Version of smsd: smstools-3.1.15-3.el6.x86_64
Smsd installed from: package repository
Name and model of a modem / phone: 12d1:1520 Huawei Technologies Co., Ltd. K3765 HSPA
Interface: USB

Hi

I'm trying to get this modem to work on a CentOs machine
Kernel version is 2.6.32-279.11.1.el6.x86_64 #1 SMP Tue Oct 16 15:57:10 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

I've ran usb_modeswitch to force the modem to appear, I have /dev/ttyUSB0 but I can't communicate with it via smsd or even minicom.
The error log shows:

2012-12-10 17:55:25,2, smsd: Smsd v3.1.15 started. 2012-12-10 17:55:25,2, smsd: Running as root:root. 2012-12-10 17:55:25,7, smsd: Running startup_check (shell): /var/spool/sms/incoming/smsd_script.ymkcGx /tmp/smsd_data.6cvt9n 2012-12-10 17:55:25,7, smsd: Done: startup_check (shell), execution time 0 sec., status: 0 (0) 2012-12-10 17:55:25,4, smsd: File mode creation mask: 022 (0644, rw-r--r--). 2012-12-10 17:55:25,5, smsd: Outgoing file checker has started. PID: 20473. 2012-12-10 17:55:25,7, smsd: All PID's: 20473,20475 2012-12-10 17:55:25,5, GSM1: Modem handler 0 has started. PID: 20475. 2012-12-10 17:55:25,5, GSM1: Using check_memory_method 1: CPMS is used. 2012-12-10 17:55:25,6, GSM1: Checking device for incoming SMS 2012-12-10 17:55:25,6, GSM1: Checking if modem is ready 2012-12-10 17:55:25,7, GSM1: -> AT 2012-12-10 17:55:25,7, GSM1: Command is sent, waiting for the answer 2012-12-10 17:55:30,7, GSM1: put_command expected (OK)|(ERROR), timeout occurred. 1. 2012-12-10 17:55:30,7, GSM1: <- 2012-12-10 17:55:30,7, GSM1: ->

I am certain that there's no problem with the modem, because I inserted it into a Ubuntu PC and I was able to send SMS with it (also using smstools).
I've copied the same /etc/smsd.conf that worked on the Ubuntu box with no luck. I've tried all baudrate settings and various minicom port settings - no luck.

Please advise.
Thanks,
Dan