A VoIP handset which supports SIP will normally work with the FB6000. Most makes of handset actually allow multiple identities on the handset so it can appear as multiple handsets to one or more phone systems, but a typical installation will not normally need more than on identity per handset.

On the handset you will need to set a registrar and/or proxy which is usually either a host name or an IP address. This will need to refer to the FB6000's address.

The handset will also have some form of login or username and a password. Typically you would use the extension number or DDI as the username, but in an office PABX you may want people's names as the user name.

VoIP users are normall authenticated using RADIUS to your authentication server. Appendix F provides details of the RADIUS parameters. It is possible to configure local telephone users as well.

The VoIP status page shows the active registrations from handsets.