asterisk users - Jul 2005 - [bristuff] returning a Busy to the telco?

Hi Kape,

Life is generally good with bristuff and the quadBRI cards. However I've
got a concern: how does one return a busy signal to the telco when all B
channels are busy? Right now, when all channels are in use, the remote
caller is kept waiting until the telco times out and finally get a busy
signal (on a land line) or error tone (mobile).

On the asterisk side here is the output:

	-- Ignoring callwaiting SETUP on channel 0/0 span 4 0
	Jul 18 10:21:20 WARNING[27332]: chan_iax2.c:5063 socket_read: midget packet
received (1 of 4 min)
	Jul 18 10:21:22 WARNING[27325]: chan_zap.c:7534 zt_pri_error: PRI: received
SETUP message for call that is not a new call, wicked!!! going on ...
		-- Ignoring callwaiting SETUP on channel 0/0 span 4 0


Thanks in advance for your help, 

Best regards,