When migrating some clients from other PBXs they're used to 501-509 for shared park calls so we try to keep that in place. In V14 we set SP1 as the mobile number. For v15 we've used the 'If my phone is busy/unregistered forward calls to:' dialog. Has this functionality been removed? The fully up to date v15 install I'm currently working on gives an error message I've never seen before "Invalid outside number". Is anyone aware of another workaround?