Jeff The grandstream units support both Relay and passthru depending on how you set them up. Thanks Bryant Zimmerman (ZK Tech Inc.) 616-855-1030 Ext. 2003 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20120925/3987eea2/attachment.htm>