The Key Telephone User Guide is for anyone who uses a Panasonic 44-Series digital telephone in conjunction with the Panasonic DBS 576. The DBS 576 is a telephone system that provides you with a powerful set of features for handling calls. This manual provides an overview of the following digital phones and offers detailed information about using the features provided by the DBS 576: • VB-44210 – 16 key standard phone • VB-44220 – 22 key standard phone • VB-44223 – 22 key small-display speakerphone • VB-44224 – 22 key small-display speakerphone (voice recognition compatible) • VB-44225 – 22 key large-display speakerphone • VB-44230 – 34 key standard phone • VB-44233 – 34 key small-display speakerphone.