User manual
()
:
●
●
A: (
)
●
B:
DSL
●
C:
PBX ISDN
●
D:
●
E: /
●
F: /
●
G:
(
)
●
H: /
●
I: /
●
J: /
●
K: /
(
)
1.
(
) 58
▲
2
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 :
THWW
59