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These are the notes I took to get this working today. I’ll update it if I learn anything new, because as with everything, there’s probably an easier way to do this. I’m using a Thinkpad A20m, Mandrake 9.1, a Socket Bluetooth card in a PCMCIA caddy, and a Nokia 3650 with service from T-Mobile. A big thanks to who steered me in the right direction on this!

Before you do anything, check out to get to a point where the scripts in this entry will be useful. In particular, be sure to set up /etc/bluetooth/bluepin as directed in that article. Next, edit your /etc/bluetooth/rfcomm.conf as shown here:

rfcomm0 {  # Automatically bind the device at startup  bind yes;  # Bluetooth address of the device  device YOURDEVICE;  # RFCOMM channel for the connection  channel 1;  # Description of the connection  comment "Nokia 3650 GPRS Modem";}

Be sure to replace YOURDEVICE with your phone’s bluetooth ID (something like 00:11:22:33:44:55). Use the command sdptool search DUN to figure out that device’s number. Then, add this command to one of your startup scripts:

rfcomm bind rfcomm0

Now, set up an /etc/sysconfig/network-scripts/chat-ppp0 script with the following:

TIMEOUT         5  ECHO            ON  ABORT           '/nBUSY/r'  ABORT           '/nERROR/r'  ABORT           '/nNO ANSWER/r'  ABORT           '/nNO CARRIER/r'  ABORT           '/nNO DIALTONE/r'  ABORT           '/nRINGING/r/n/r/nRINGING/r'  ''              /rAT  TIMEOUT         12  OK              ATE1  OK              'AT+cgdcont=1,"IP","internet3.voicestream.com"'  OK              ATD*99***1#

and set up a /etc/sysconfig/network-scripts/ifcfg-ppp0 script with (this is based on something I found :

DEVICE=ppp0  CHATSCRIPT=/etc/ppp/chat-gprs  ONBOOT=no  MODEMPORT=/dev/rfcomm0  LINESPEED=57600  AUTH=no  DEBUG=yes  DEFROUTE=yes  PERSIST=no  HOLDOFF=10  DEMAND=no  PHONE='*99***1#'  HARDFLOWCTL=no  PEERDNS=yes  MRU=1500  MTU=1500  RETRYCONNECT=yes

You can then fire up the connection with/etc/sysconfig/network-scripts/ifup ppp0 For reasons I haven’t been able to figure out, it takes three tries to get it working. The first time, you’ll see this in /var/log/messages:

...  Aug 14 08:04:53 camfrancium chat[2989]: Failed ( NO CARRIER^M)  Aug 14 08:04:53 camfrancium pppd[2971]: Connect script failed  Aug 14 08:04:54 camfrancium pppd[2971]: Exit.

the second time, you may see this:

...  Aug 14 08:05:12 camfrancium pppd[3017]: Serial line is looped back.  Aug 14 08:05:12 camfrancium pppd[3017]: Connection terminated.  Aug 14 08:05:13 camfrancium pppd[3017]: Exit.

and finally, you’ll see this (success):

...  Aug 14 08:05:22 camfrancium pppd[3077]: primary   DNS address 216.155.175.170  Aug 14 08:05:22 camfrancium pppd[3077]: secondary DNS address 216.155.175.171

So, in theory, all you need to do to make the connection is:

# rfcomm bind rfcomm0     #(only once until you reboot again)  # /etc/sysconfig/network-scripts/ifup ppp0

This entry was posted on Thursday, August 14th, 2003 at 10:33 am and is filed under . You can follow any responses to this entry through the feed. You can , or from your own site.

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