ISDN 8528T VOICE TERMINAL
Handset
Telephone
number
card
Volume control button
Mute button
Speaker button
Conference button
Transfer button
FIGURE 3-21. The ISDN 8528T Voice Terminal
ISDN 8520T Voice/Data Terminal
ISDN 8528T
Menu
Prev
Next
Dir
a
h
o
v
b
i
p
w
c
j
q
x
d
k
r
y
e
j
s
z
f
m
t
A
g
n
u
B
ABC
DEF
Volume
Message
1
2
3
Mute
Redial
GHI
JKL
MNO
4
5
6
Speaker
Exit
PQRS
TUV
WXYZ
7
8
9
Conf
Drop
Oper
*
#
Transfer
Hold
O
Redial button
Exit button
Drop button
Hold button
Display
4 Softkeys
4 Display
control buttons
28 Call
appearance/
feature buttons
Message light
Dial pad
3-445