●
F: /
●
G:
(
)
●
H: /
●
I: /
●
J: /
●
K: /
dial-up
(
)
1.
() 149
2.
●
DSL: digital subscriber line (DSL)
(DSL
ADSL /
)
●
PBX:
(Private Branch Exchange - PBX)
●
ISDN:
(Integrated Services Digital Network - ISDN)
●
:
●
:
●
dial-up : dial-up
dial-up :
—
dial-up
—
dial-up
—
dial-up
●
:
●
:
3.
:
/
150
B
THWW
Commentaires sur ces manuels