ISDN DEVICES |
||
|
ACRONYM |
ITEM |
DEFINITION |
|
NT1 |
Network Terminator 1 |
·
provides
physical and electrical termination functions ·
provides
interface between twisted pair wires (used by the telephone company for BRI)
and eight-wire cables (used by the ISDN equipment) ·
power
function |
|
NT2 |
Network Terminator 2 |
·
handles
switching and traffic concentration functionality (usually through PBXs -
Public Branch Exchanges) for PRI connections |
|
TE |
Terminal Equipment |
·
end user
device for both non-ISDN and ISDN-ready CPE (Customer Provided Equipment) |
|
TE1 |
Terminal Equipment 1 |
·
CPE which
supports the standard ISDN interface directly (CPE does NOT require a
terminal adapter) |
|
TE2 |
Terminal Equipment 2 |
·
CPE which
does NOT support the standard ISDN interface (CPE requires a terminal adapter) |
|
TA |
Terminal Adapter |
·
provides
protocol conversion to adapt non-ISDN ready terminal equipment to ISDN
termination ·
provides
optional channel ‘bonding’, creating one virtual 128 Kbps link from two - 64
Kbps links |