linux ma600 6310i

[David Lee]

I am having problems getting communication to my Nokia 6310i via IRdA using 
the MA600 serial dongle. Responses at present are:
$cat /proc/net/irda/discovery
IrLMP: Discovery log:

nickname: Nokia 6310i, hint: 0xb125, saddr: 0xf4551882, daddr: 0x0000284f

$ps ax |grep iratt
  903 ?        S      0:00 /usr/sbin/irattach /dev/ttyS1 -d ma600 -s
 1707 pts/1    S+     0:00 grep iratt

gnokii --monitor
GNOKII Version 0.6.5
Lockfile /var/lock/LCK..ircomm0 is stale. Overriding it..
Entering monitor mode...
Timeout: aborting command ``/usr/lib/gnokii/gnokii'' with signal 9
/usr/bin/gnokii: line 16:  1723 Killed                  timeout $TIMEOUT 
$BINARY "$@"

Log files appear to indicate the baud rate is being scanned to find the 
correct rate:
Jul 11 22:11:42 localhost kernel: IrLAP, no activity on link!
Jul 11 22:11:42 localhost kernel: Framing or parity error!
Jul 11 22:11:46 localhost last message repeated 5 times
Jul 11 22:11:46 localhost kernel: IrLAP, no activity on link!
Jul 11 22:11:46 localhost kernel: Framing or parity error!
Jul 11 22:11:47 localhost kernel: Framing or parity error!
Jul 11 22:11:47 localhost kernel: irlap_change_speed(), setting speed to 9600
Jul 11 22:11:47 localhost kernel: irda_poll(), POLLHUP
Jul 11 22:11:47 localhost kernel: irda_poll(), POLLHUP
Jul 11 22:11:47 localhost kernel: ma600_change_speed()
Jul 11 22:11:47 localhost kernel: ma600_reset()
Jul 11 22:11:47 localhost last message repeated 2 times
Jul 11 22:11:47 localhost kernel: ma600_change_speed()
Jul 11 22:11:47 localhost last message repeated 2 times
Jul 11 22:11:47 localhost kernel: ma600_change_speed() control byte written != 
read!
Jul 11 22:11:47 localhost kernel: control byte = 0x00
Jul 11 22:11:47 localhost kernel: byte echo = 0xC2
Jul 11 22:11:47 localhost kernel: ma600_change_speed()

Attempting to use minicom does not get very far
$minicom /dev/ircomm0
minicom: cannot open /dev/ttyS1: Device or resource busy

but
$sudo minicom /dev/ircomm0
runs, without getting any response.

Any ideas?

(Operating system is Linux Debian stable)
------ 
David Lee
Living Stones, Flore, UK