i have a non-DID extention setup in a remote office that is bridged on several 9640 phones, 4 to be exact. When the primary is on the line, I would like for others who have that bridged appearance to be able to jump in on the call. When they try this they cant pick it up. I've checked the settings against another phone that does the same thing sucessfully with different extensions and all seems to be the same. Any ideas?