Lucent Technologies Release 8.2 Manual Do Utilizador

Página de 524
DSU 
  
Glossary
Administration for Network Connectivity
CID: 77730
555-233-504 — Issue 1 — April 2000
474
DSU
Data service unit.
DTDM
Digital-terminal data module.
DTE
Data-terminal equipment.
E
E-1
A digital transmission link with a capacity of 2.048 Mbps (2,048,000 bits per 
second). The European equivalent of the 
. It can support 30 multiplexed 
64-Kbps voice and data channels plus separate 64-Kbps channels for signalling 
and framing (synchronization). Also spelled E1.
EIA
.
EIA-232
A physical interface specified by the EIA. EIA-232 transmits and receives 
asynchronous data at speeds of up to 19.2 kbps over cable distances of up to 50 
feet. EIA-232 replaces RS-232 protocol in some DEFINITY applications.
electronic tandem network (ETN)
A tandem tie-trunk network that has automatic call-routing capabilities based 
on the number dialed and the most preferred route available. Each switch in the 
network is assigned a unique private network office code (RNX), and each 
voice terminal is assigned a unique extension.
Electronics Industries Association (EIA)
A trade association of the electronics industry that establishes electrical and 
functional standards.
Ethernet
 (LAN) that works over short distances on twisted-pairs or 
coaxial cables at speeds up to 10 mbps or 100 mbps. One of the two LAN 
protocols MMCX supports. See 
Ethernet Source Address
A 48-bit physical address of the NIC; also called the MAC address.
ETN
Electronic tandem network