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Please see here all relevant information surrounding Castel products and systems.
How to upgrade a Castel CAP IP intercom
How to upgrade a Castel Xellip 2 intercom
How to use the Castel IP search tool
(COMPLETE GUIDE) How to set-up a Castel Xellip2
How to set a Grandstream GPX1625 for Castel use
How to set a Grandstream GXV3240 for Castel use
How to set up a Grandstream for Castel use
How to set Castel Xellip 2 Audio Messages
How to set a relay on a Xellip desk screen for an incoming call
How to restore a back-up to a Castel panel