| Basic
rate access – user interface |
| S/T |
|
|
|
| Network |
||
| Termination |
||
| U |
|
|
|
| Terminal |
||
| Adaptor |
||
|
|
|
|
|
| Line |
||||
| Interface |
||||
| Circuit |
||||
|
|
|
| Bi-directional |
||
| 192 kbit/s |
||
|
|
|
|
|
| 160
kbit/s echo |
||||
| canceling or |
||||
| time
compression |
||||
| R |
|
|
|
| Non-ISDN |
||
| terminal |
||
|
|
|
| ISDN |
||
| terminal |
||
| Exchange |
| Subscriber (premises)
network |