Tech Info - Philips 747

ANT 16 9 Charging connector
(O) I-I-I-I-I-I-I-I ( ) ( o )
CON 8 1

The left symbol (O) is the antenna connector for car kits. The symbol numbered 16-9 on the top and 8-1 on the bottom is the system connector. the ( ) is the open space next to the connector and the ( o ) is the charging connector for you home-charger.

PIN	Name	Description
---	----	-----------
1,9	GND		Digital ground
2	MIC/JCONN	External audio input from accessories or handsfree microphone. Multiplexed with junction box connection control signal
3	AGND		Analogue ground for accessories
4	TDA		Transmitted DBUS data to the accessories
5	M2BUS		Serial Bidirectional data and control between the handportable and accessories
6	HOOK/RXD2	Hook indication. HP has a 100KE pull-up resistor.
7	PHFS/TXD2	Handsfree device power on/off, data to flash programming device.
8,16	VCHAR		Battery charging voltage
10	EAR/HFPWR	External Audio output to accessories or handsfree speaker
11	DSYNC		DBUS data bit sync clock
12	RDA		DBUS recieved data from the accessories
13	BENA		Power supply to headset adapter
14	VF		Programming voltage for FLASH
15	DCLK		DBUS data clock

Battery Connector (on the phone) 

|--|--|--| 
1  2  3  4 

1 ...... GND ground (-) 
2 ...... TBAT battery temperature 
3 ...... BTYPE -"- type 
4 ...... VBATT -"- battery voltage (+) 

As you can imagine. YOU CAN DESTROY YOUR NOKIA BY FOOLING AROUND WITH THESE CONNECTIONS. Therefore I accept NO responsibility for any possible damages. My advise to you is to think twice before doing something and if you are going to try make use of a car-kit holder to get access to the X100 connector since it is to tiny to use a self-fashioned connector. IT IS POSSIBLE TO REPROGRAM THE NOKIA 2110 as is indicated by the pinout description so watch it !

Posted to Alt.Cellular-Phone-Tech by Hans Engelen

DTMF Programming

If you dial in to a service number which requires DTMF strings after you have dialled in, you can program the whole sequence. What you do is:

• Key in the number.

• Press the * three times: a 'p' appears (pause).

• Key in the DTMF code, you can use 'p' again in this string.

• Store this in memory.

• If you select the memory place, and dial the stored number, the mobile will wait a few seconds (pause) and then send the string as DTMF.

• Another option is to press the * four times: a 'w' appears (wait). When the 'w' is reached in the callstring, 'DTMF' appears at the left menu button. When you press the left menu button the mobile starts sending DTMF.

Carkit Programming

If you use a carkit with handsfree AND additional handset, and you want to switch from handset to handsfree:

• Press the left menu button, and put the additional handset on hook.

• Now you are on handsfree.