3

* This specification are subject to be changed without notice.

4.28.1999

EM91850

TONE/PULSE DIALER WITH HF, HD, REDIAL

AND VOLUME CONTROL FUNCTION

Preliminary

KEYBOARD DESCRIPTION :

Key

Description

0~9,*,#

Digit key.

F1 , F2 , F3

Flash key, flash time F1=600ms F2=300ms F3=100ms.

*/T

In Pulse mode, this key mean Pulse to Tone function key.

RD

Redial and One key Redial key.

P

Pause key.

HD

Hold function key, at hold mode to key in "HD" key will go to idle On-hook

state.

HF

Handfree function key.

SAVE

SAVE function key.

VA

Volume Add key.

MUTE

MUTE key. When this key be pressed MuteO output will be "high", and

any key-in will release mute.

Key Assignment :

HD

SAVE

12

3

45

6

78

9

*/T

0

#

MUTE

RD

VA

F1

F2

F3

P

K1

K2

K3

K4

K5

K6

HDO

MuteO

R_option

R_option

XMUTE

R

R

R