pin-out description..

[jax79]

Hi everybody...
I am trying to make an 'sms controlled' home security system using fbus protocol.
The phone i intend to use is nokia 3510i.
1. in its pinout diagram one pin is named as Vpp.what is its purpose? how many
volts should we apply to it?
2. Also one pin is left unmarked.what does it do?

Plz help..

pin1. gnd
2.Vpp
3.Fbus Rx
4.Mbus
5.Fbus Tx

 

[idema]

that kind of interface is probably for external optional work such as interface for PC
like RS232 or USB the VCC pin is 3,3 or 5Volt max this is voltage for any interface
for Phone.

bye