viii STS Station User Guide
24-Button Executive Telephone
9 VOLUME Key Used to adjust level of tones, background music,
ringing, receiver volume, and display contrast.
10 Speaker Outputs tones and voice at your extension.
Number Feature Description
FLASH TRANS
SPEED CONF
MSG FWD
MUTE
CAMP ON
ON/OFF
HOLD
VOLUME
123
456
789
0
ABC DEF
GHI JKL MNO
PRS TUV WXY
OPER
1
2
3
4
5
6
7
8
9
10
11
12
13
15
16
14
17
1
8
*
#
91
20
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