Address Book

As devices have become ever more powerful, the function of the address book in your telephone has evolved tremendously. The address book allows you to choose the desired call participants simply by selecting their address book entry, without entering their telephone number. To begin with, the address book was a simple speed-dial memory, in which the telephone number of the party could be assigned to a specific key. With the progress of technology address book functions and data storage options grew considerably. Modern landline, or DECT phones, often offer address books with several hundred entries available. In addition to the name and the landline telephone number further information, such as other telephone and mobile numbers, can be stored. With smartphones and Computer Telephony Integration (CTI) the address book is likened to database, with almost unlimited data storage capabilities for each individual contact.

Saving the address book

The first telephone address books had a simple memory function for numbers that were assigned to a button. The amount of memory and the number of possible entries was very limited. More modern handsets had address books in larger, non-volatile memories, which could be edited and easily accessed via a menu. With the advent of mobile phones the opportunity came to store address books directly to the SIM card. This offers the advantage that when changing the mobile phone, but keeping the SIM card, the address book is transferred and does not have to be re-entered. Modern smartphones allow their users to save the address book, together with extensive information about each contact, directly on the device itself or in the cloud. Cloud address books allow users to access their contacts with any device. The address books are synchronised automatically over the Internet.


The role of the address book in cloud PBX and CTI

The advent of the cloud PBX and Computer Telephony Integration (CTI) has seen the telephone and computer merge ever closer together. Modern systems can establish telephone calls with just the click of a mouse from a link in an email program. With incoming calls, the extensive additional information can be displayed on the computer screen. This allows, for example, the person making the call to have access to their entire telephone history or to see customer records, also from other departments, such as purchase orders or complaints. This simplifies telephone use, making communication within the company more efficient.


Further information

Computer Telephony Integration (CTI)

CTI is the abbreviation for the technical term Computer Telephony Integration. It refers to a communications solution that, with the assistance of computer software, allows functions of the phone…

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