Using One Number Access to do advanced call forwarding or ringing of multiple phones in a users profile. Log into VO Configuration Manager (virtual office), go to Users, More Options, Select Edit, then Advanced Settings. You can simultaneously ring phones or ring one phone then another and another. You can also set it to wring another phone when Internet Connection is down. Many options and advanced features can be setup by the user, the power and choices are yours. 8x8 BTX San Jose is a premier 8x8 provider reseller here in the Bay Area.