Belkin PF31 Specifications download pdf (Page 32)

Basic Configuration and Operation

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To receive a file from a remote device, use the test program in server mode.

(This is shown in the following listing.) You can then push a file to your

computer from a remote device.

$ sdptool add --channel=4 OPUSH

$ obex_test -b ff:ff:ff:00:00:00 4

> s

Note that some devices require the OBEX capability to be reflected in your

Bluetooth device’s device class setting before they allow transfers to be made

to your computer. (See the section “Device classes” for a detailed discussion

on the exact values that this can take.) In most cases, it is sufficient to set the

class to

service_class_obex | device_class_computer (0x100100). This can be

set in /etc/bluetooth/hcid.conf or by dynamically using the hciconfig command.

The test applications that come with the OpenOBEX libraries are necessar-

ily very rough and require you to do the legwork. Happily, more polished

applications are available. These applications form part of the KDE and

GNOME desktop projects, and are mentioned later in this chapter.

Other software meriting investigation can be found on the Web. These

programs include ussp-push, obextool, and the OBEX PUSH daemon.

They can be found either by searching the Web or visiting a page on Linux

and Bluetooth, created by BlueZ maintainer Marcel Holtmann, at http://

www.holtmann.org/linux/bluetooth.

PPP Networking

Point-to-point networking is useful for networking two computers together.

If one of the peers permits routing or bridging to a wider network, then the

other gains access to that network. This is what happens when you dial up

your Internet service provider on a traditional modem.

PPP networking is used in the implementation of the Bluetooth LAN access

profile. Here is what an SDP record for the LAN access profile looks like:

Service Name: LAN Access over PPP

Service RecHandle: 0x804dae0

Service Class ID List:

"LAN Access Using PPP" (0x1102)

Protocol Descriptor List:

"L2CAP" (0x0100)

"RFCOMM" (0x0003)

Channel: 2

Profile Descriptor List:

"LAN Access Using PPP" (0x1102)

Version: 0x0100

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Belkin PF31 Specifications Page 32