I currently use sipsak 0.8.8 for a variety of tasks however I now need to use sipsak to start, maintain and end a SIP session. I'd like to send an INVITE, authenticate, check for a 200 OK, send a refer then a bye to remove myself from the call. I cannot get this to work. I've tried sipsak with the -l, -G, -u, -a and -s options in various combinations without success. Does anyone have any thoughts on how I can accomplish this task? Thanks,Steve Senior Network Engineer, Information Systems and Computing Networking and Telecommunications , Suite 221A /6228 University of Pennsylvania Voice:215-573-8396 FAX:215-898-9348