User manual
: ISDN
3
/
ISDN
"multi-comb"
●
PBX
""
: PBX
""
PBX
●
PBX
●
/
D:
(
)
B-3
1
2
1-LINE
/
1.
1-
LINE
:
/
2.
Auto Answer ()
THWW
()
191