Celliax.Org

Hi,
I use a GSM modem with Asterisk 1.4,and I install celliax correctly.Incoming call is ok because sip extension can talk with outer caller.
but,I cann't dial out.I see Asterisk full log file(which in /var/log/asterisk/ )and found an error like this:
[Aug 13 16:35:59] ERROR[3892] chan_celliax.c: [b77cdb90][ERROR 7506 ][nicephone ][ 3, 3, 3, 0] dial command failed, dial string was: ATD13560073101;
So,It looks like that the AT command was wrong, so I use minicom in linux,I send "ATD13560073101;",and its OK too.I don't know where I did wrong.
any one can help me?
Thanks advance
LGX