Hello Sir, I am Venkat, doing M.Tech in IIT Kanpur, India. I am new to this group. I integrated OpenH323( v1.13.5 ) with Asterisk-1.0-RC2. (I used asterisk-oh323-0.6.3b ) While trying to make a call to a ohphone from Asterisk I got the following error at the asterisk. Actually a call is established with ohphone(This I could see at the ohphone client) and terminated immedeiately. << Console call has been answered >> Oct 3 22:47:40 WARNING[1152361536]: chan_oss.c:409 soundcard_setinput: Unable to re-open DSP device: Device or resource busyOct 3 22:47:40 WARNING[1152361536]: chan_oss.c:568 oss_write: Unable to set device to input mode << Hangup on console >> At the CLI prompt I gave the following commands in order add extension 5454,1,Dial,OH323/172.27.22.196 into local add extension 5454,2,Answer,OH323/172.27.22.196 into local Dial 5454 Where 172.27.22.196 is the IP address of the machine where I was executing ohphone application. What may be the problem with my setup. Please help me in this regard. Please give me a reply. thanks Venkat _______________________________ Do you Yahoo!? Declare Yourself - Register online to vote today! http://vote.yahoo.com