Has anyone come up with a solution to the Polycom SSIP's DSS key issue? We host 300 or so 3cx's - many with SSIP's that have been working fine for years. Upon upgrading to v15.5, any SSIP with a DSS key configured causes the phone to "freeze" and cease to function until powered down/up. It is just silly to suggest this is a Polycom issue.... So, I ask again, anyone figure out how to fix what 3cx broke? Workaround? Other?