Connecting to a two-way headset

Hi,

Apologies if I'm asking a repeated question, but my search just now didn't pick up any answers.

I'm trying to get a speaker-and-microphone headset working.

More exactly . . .

I have a new Sony Ericsson HBH-PV702 Bluetooth headset - that is, a headset not with just speakers, but with both a speaker and microphone.  

I also have a Dell Inspiron 6400 with Bluetooth built-in, on which I'm running Debian Lenny (Linux 2.6.22-3-amd64 #1 SMP Sun Nov 4 18:18:09 UTC 2007 x86_64 GNU/Linux).

I would like to use the headset with Twinkle, which is also installed and often used (with a run-of-the-mill wired headset).

I have several bluetooth-related Debian packages installed, for example: "bluetooth" (3.24-1+b1); "bluetooth-alsa" (0.5cvs20070327-1); "bluetooth-audio" (3.4-1+b1); "bluez-gnome" (0.13-1); "bluez-utils" (3.24-1+b1); "gnome-bluetooth" (0.9.1-1); "gnome-vfs-obexftp" (0.4-1); "libbluetooth2" (3.24-1); "libbtctl4" (0.9.0-2); libgnomebt0 (0.9.1-1); "libsbc0" (0.0cvs20070728-1); etc.  (This, according to Synaptic.)

>From the headset's user's manual, I have learned that to connect it to another device, I must first "prepare" the headset - which I assume means put it into "pairing" mode by pressing both volume-up and volume-down buttons simultaneously until the LED alternates red/green.

I learned from various sources on the net, that to connect my computer to the headset, as the root user I must run the command:

hcitool scan

to discern the headset's (what-I'm-calling-"MAC") address:

Scanning ...
	00:1C:A4:20:CE:BE	HBH-PV702

And, once I have that address, I can use it with the hcitool cc command to connect to the headset

hcitool cc 00:1C:A4:20:CE:BE

The response to which in /var/log/syslog is

22:45:56 NetworkManager:  [1202852568.559130] nm_hal_device_added(): New device added (hal udi is '/org/freedesktop/Hal/devices/bluetooth_acl_1ca420cebe'). 
22:45:56 hcid[3320]: link_key_request (sba=00:16:CF:CF:09:16, dba=00:1C:A4:20:CE:BE)
22:45:57 NetworkManager:  [1202852571.034919] nm_hal_device_removed(): Device removed (hal udi is '/org/freedesktop/Hal/devices/bluetooth_acl_1ca420cebe'). 

So my question is:

Is this right?  (It seems strange to me that the device would be removed one second after it has been added.) 

If so, what would be the next step towards using the headset?  If not, how can I make it what it should be?

Or am I going about this completely the wrong way?

In case it helps to answer those questions, I'll provide a couple other things I've noticed:

I have a what is called a "Bluetooth Applet" in what I call my desktop's taskbar.  When I right-click on it and select "Browse Devices", I get a one-item list of devices: "HBH-PV702 Headset".  The first time I ran

hcitool info 00:1C:A4:20:CE:BE

I was prompted by a graphical (rather than command-line) prompt (seemingly from the applet) saying "Pairing request for device: HBH-PV702 (00:1C:A4:20:CE:BE) Enter passkey for authentication:"

I entered "0000" (as mentioned in the headset's user's manual) and clicked the prompt's "OK" button, and the following was then printed in the command-prompt window where I had entered the hcitool info command:

BD Address:  00:1C:A4:20:CE:BE
LMP Version: 1.2 (0x2) LMP Subversion: 0x73b
Manufacturer: Cambridge Silicon Radio (10)
Features: 0xfc 0xfe 0x0f 0x00 0x08 0x08 0x00 0x00
	    
	     
	     
	   
	  

Moreover, a padlock-icon also appeared in the applet's device-list between "HBH-PV702" and "Headset".  What this padlock means . . .  I have no idea.

But that passkey prompt was a one-time-only phenomenon.  Every subsequent hcitool info command returns the same response in the command-prompt window - with no further prompt for a "passkey".  And the padlock remains.

I get the impression I'm way off track.


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