nokia 6100 and gammu

[Арсений]

Hello, can anybody help me

I have nokia 6100 and usb-cable. But I have a problem with connection. 
My gammurc file
~$ cat .gammurc
[gammu]
connection = dlr3
model = nokia 6100
port=/dev/ttyUSB0
name=6100

And
$gammu textall --identify
[Gammu            - 1.18.90 built 21:19:18 Feb 13 2008 using GCC 4.2]
[Connection       - "dlr3"]
[Connection index - 0]
[Model type       - "nokia 6100"]
[Device           - "/dev/ttyUSB0"]
[Runing on        - Linux, kernel 2.6.24-17-386 (#1 Thu May 1 13:57:56 
UTC 2008)]
Configured model nokia 6100 is not known, retrying with autodetection!
Serial device: DTR is down, RTS is down, CAR is down, CTS is up
Serial device: DTR is down, RTS is down, CAR is down, CTS is up
HINT: Setting DTR failed, maybe adding -nodtr to connection will help you.
Error setting device DTR or RTS.
[Closing]

Thank you

Arseny