The current GSM network supports data and fax transmission speed of 9600bps. To overcome this speed limitation, Communicate at Motorola developed Digital Data Fast (DDF) compression. This technology is based on V42bis data compression techniques. With Motorola's 9600 capable cellular phones, data throughput rates of up to 36000bps or 56000bps can be achieved depending on the card used and file type transmitted.

data decryption field. A header field, in a file encrypted by using the Encrypting File System, that contains the file encryption key encrypted with the file encryptor's public key.

Data Descriptive File - This is the file name extension used for the multiple files stored in a single USGS SDTS transfer .tar.gz archive such as for a DEM or DLG.

(aka "Distance Distortion Factor", "Deception") - The factor or ratio at which a girl (or guy) looks attractive at a distance but as he / she grows nearer, you realize their true ugliness. - Quinn, UND

Deutsche Diversified Trust

Device Description Framework - Part of SyncML-DM.

Digital distribution frame

Distributed database facility. Used by DB2 to communicate with another RDBMS.

Digital Document Format. A way of storing information electronically. Adobe's Portable Document Format (PDF), Microsoft Word format, and HTML are examples.

Disease/Drug Free.

drug and disease free

Destination Documentation Fee.

District Development Fund