Thank you for the reply what will happen if I removed the phone from Auto provisioning why is it not recommended. and when setting up blf in 3cx does this do it on the expansion module or the phone it self?You have to configure the blf keys for expansion module in 3cx management console and not on the phone itself. If you must do it on the phone then you have to remove phone from auto provision (not recommended).
Founded in 2005, when VoIP was an emerging technology, 3CX has gone on to establish itself as a global leader in business communications.