[Serusers] Call transfer from IP phone to PSTN endpoint

Hello: I am using SER 0.8.14 stable. All is well except some users are reporting that blind and supervised transfer, initiated from aCisco 7960 running 7.3 SIP image, doesn't work. Just dead air after transferring until eventually the transfer timesout. ngrep and SER log output suggests the correct sequence of invites and acks are being generated yet the calls do not go through. Has anyone else experienced this type of problem? If so can you share some thoughts on what is happening? Thanks,Steve // -- ISC Network Engineering The University of Pennsylvania 3401 Walnut Street, Suite 221A Philadelphia, PA 19104 voice: 215-573-8396 215-746-8001 fax: 215-898-9348 sip:blairs@upenn.edu