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9

2. Handset call

Transmitting signal is input from handset microphone 

 input to IC101-K18, K19  

  

 A/D conversion, Gain adjustment by a built-in DSP of IC101.

Receiving signal input from IP Line  

 Gain adjustment and D/A conversion by DSP of IC101  

  

 IC101-V18, V19 output from   output to handset speaker.

The key data is under the matrix control by IC205.
The key information output from LED_STB is input into KEYIN, when the key is pressed.
The HOOK key is independent from Key Scan Matrix and taken into the port singularly.

AGND

AGND

C381

C382

IC101

K18

K19

Handset
Jack

R314

C348

R317

R316

C356

C351

R311

R312

C352

R313

AGND

AGND

AGND

MICBIAS

C353

C354

C357

C358

D301

D302

HS_MICP

HS_MICM

C355

CL-HS_MICP

CL-HS_MICM

R315

C391

C392

AGND

AGND

AGND

AGND

AGND

AGND

AGND

D309

D310

L310

L311

AGND

AGND

L306

L305

AGND

AGND

AGND

AGND

C359

NC

C360

NC

C361

330p

D303

D4ED18R00008

D304

D4ED18R00008

HS_SPP

HS_SPM

CL-HS_SPP

CL-HS_SPM

M17

M18

【Ope PCB】

MIP

SPP
SPN

KEYIN[2]

KEYIN[0]

KEYIN[1]

KEYIN[4]

KEYIN[3]

KEYOUT[4]

KEYOUT[3]

KEYOUT[2]

KEYOUT[1]

KEYOUT[0]

*

12

9

12

1

12

REDIAL

12

0

12

7

12

#

12

5

12

3

12

8

12

6

12

4

12

2

12

ICM

12

FLASH

12

MUTE

12

CONF

12

TRANSFER

12

HOLD

12

SP-PHONE

12

FF1

12

FF2

12

FF3

12

UP

12

DOWN

12

KEYIN[5]

OPE_3.3V

SW1

HOOK SW

1

2

3

4

5

6

R405

SPAMPEN

IC101

T10

V9

U9

R9

W9

T9

V8

W8

T8

V10

U8

10

The lighting of the LEDs is controlled by IC101.
All LEDs are static lighting system.

【Ope PCB】

G

R

G

R

G

R

LED[0]

LED[1]

LED[2]

LED[3]

LED[4]

LED[5]

LED[6]

LED[7]

LED[8]

LED401

FF1

3

4

1

2

LED403

FF3

3

4

1

2

LED402

FF2

3

4

1

2

OPE_3.3V

LED404

ICM

LED405

MUTE

LED406

SP-PHONE

L401

LED407

MESSAGE

LED-A

LED-K

LED[0]

LED[1]

LED[2]

LED[3]

LED[4]

LED[5]

LED[6]

LED[7]

LED[8]

DGND

Q101

1

2

3

4

5

Q102

1

2

3

4

5

Q105

1

2

3

4

5

Q103

1

2

3

4

5

Q104

1

2

3

4

5

R163

R164

R165

R166

R167

R168

R169

R170

R171

R172

R148

R150

R152

R153

R154

R155

R156

R147

R149

R151

MIP

SPP

SPN

SPAMPEN

IC101

R10

P7

P10

P9

W7

U10

U11

P8

R12

R11

LED_K

3.3V

LED_A

【LED PCB】

11

Po

E_

G

Po

E_

A

G

A

G

Po

E

DCDC

8

V

4

2

5

7V

U

S

B

S

DR

A

M

+

-

DCDC/Di

g

it

a

l

D 

Am

pli

fier

A

n

a

lo

g

H

a

ndset

MI

C

S

pe

ak

er

R

J

45

(P

C

)

A

C

5.

5

V

/500

mA

DDR IF

DCDC

3.3

V

N

A

ND F

L

AS

H

KE

Y

R

J

45

(L

A

N)

LE

D

LCD

Di

g

it

a

l P

a

rt

V

D

D

(3

.3

 o

r 

2

.5

)

IN

TE

R

N

A

L_1.

2V

A

n

a

lo

g

 P

a

rt

IN

TE

R

N

A

L_1.

8

V

IN

TE

R

N

A

L_1.

8

V

Ter

m

in

a

tion

Ter

m

in

a

tion

DG

12

 Used to establish a multiple party conversation or 

1 lines

Message/Ringer Lamp:
When you receive an intercom call, the lamp flashes red
and on an outside call, the lamp flashes red. When someone
has left you a message, the lamp stays on red.

Flexible CO Buttons: Used to seize an outside line or perform
a feature that has been assigned to the key.

Handset Hook: Keeps the handset stable when the unit is
mounted on a wall.

store programme changes.

FLASH/RECALL:  Used to disconnect the current call and

make another call without hanging up.

REDIAL: Used to redial the last dialed number.
AUTO ANS/MUTE: Used to receive an incoming call in
hands-free mode or mute the microphone/handset during a
conversation.

TRANSFER: Used to transfer a call to another party.
HOLD: Used to place a call on hold.

INTERCOM: Used to make or receive intercom calls.

SP-PHONE (Speakerphone): Used for performing

hands-free operations.

Microphone: Used for hands free conversations.
Volume Key: Used to adjust the volume and the display contrast.