
An enhanced "Camel-back" or "Companion" Digital Organizer (CDO) is described that is designed to interface to a cellular telephone. The CDO is preferably implemented as an add-on component which can be easily attached and detached from a phone by a user and, once in place, can dramatically enhance the phone's functionality by converting the phone into a "smart" phone. Exemplary features of the CDO include an ability for the user to initiate a voice call on the phone from the CDO. Preferably, the...











