When the user is using a phone that the IP Office system cannot force off-hook, the following differences are applicable. This applies to analog phones and to some SIP and DECT phones.
•Answer Button Not Shown/Clickable
When an incoming calls is presented while the phone is on-hook, one-X Portal will not enable the Answer button. You need to manually take the phone off-hook to answer the call using the phone's own controls. This includes the B179, J129 and H175 telephones. Use of the portal button to answer calls is supported for 1100/1200 Series and E129 telephones.
•Call Button Causes Call to Yourself
When making a call from one-X Portal while the phone is on-hook (for example after entering a number and clicking on Call or having selected to play a voicemail message), the telephone system calls you and only makes the outgoing call when you answer (go off-hook).