I am using a Siemens TC35 (firmware v2.01).
The AT+CMGF=0 command always fails which causes the at2_init_device() function to fail and hence the modem does not start. I think it would be better to check if this command is supported by doing a AT+CMGF=? first. Paul Keogh ANAM Wireless Internet Solutions http://www.anam.com +353 1 284 7555 (wired) +353 86 234 6047 (wireless) Castle Yard, Saint Patrick's Road, Dalkey, County Dublin, Ireland