Qué (quién) es Data Service Unit - definición
WAN EQUIVALENT OF A NETWORK INTERFACE CARD
data service unit
<communications> (DSU or "data service unit") A device used in
digital transmission for connecting a CSU (Channel Service
Unit) to Data Terminal Equipment (a terminal or computer),
in the same way that a modem is used for connection to an
analogue medium.
A DSU provides a standard interface to a user's terminal which
is compatible with modems and handles such functions as
signal translation, regeneration, reformatting, and timing.
The transmitting portion of the DSU processeses the customers'
signal into bipolar pulses suitable for transmission over the
digital facility. The receiving portion of the DSU is used
both to extract timing information and to regenerate mark and
space information from the received bipolar signal.
(1995-01-30)
Service data unit
DATA PASSED DOWN TO A LOWER LAYER OF THE OSI MODEL, YET TO BE ENCAPSULATED
Service Data Unit; PSDU
In Open Systems Interconnection (OSI) terminology, a service data unit (SDU) is a unit of data that has been passed down from an OSI layer or sublayer to a lower layer. This unit of data (SDU) has not yet been encapsulated into a protocol data unit (PDU) by the lower layer.
Personal data service
Personal data vaults; Personal Data Service; Personal data stores
Personal data services or personal data stores (PDS) are services to let an individual store, manage and deploy their key personal data in a highly secure and structured way.
Wikipedia
Data service unit
A data service unit, sometimes called a digital service unit, is a piece of telecommunications circuit terminating equipment that transforms digital data between telephone company lines and local equipment. The device converts bipolar digital signals coming ultimately from a digital circuit and directly from a Channel service unit (CSU), into a format (e.g. RS- 530) compatible with the piece of data terminal equipment (DTE) (e.g. a router) to which the data is sent. The DSU also performs a similar process in reverse for data heading from the DTE toward the circuit. The telecommunications service a DSU supports can be a point-to-point or multipoint operation in a digital data network.
Ejemplos de uso de Data Service Unit
1. SpendingPulse, a retail–sales data service unit of MasterCard International said that demand for flat–panel televisions, MP3 players and digital cameras helped spur gains as did sales of home furnishing.