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English => Interfaces, Pinouts, Cables => Topic started by: mateusz on Oct 15, 2006, 14:16

Title: Nokia PPH1(2.5 jack 4-pole+charger combined plug) to Popport
Post by: mateusz on Oct 15, 2006, 14:16
Has anyone tried to convert the old Nokia mini-car kit PPH-1 (with a 2.5mm 4-pole jack (http://pinouts.ru/CellularPhones-Nokia/nokia_headset_pinout.shtml)):
(http://pinouts.ru/images/nokia_3210_handsfree.gif)
to pop-port (http://pinouts.ru/CellularPhones-Nokia/nokia_pop_pinout.shtml)?
BTW there is no buttons, or built in microphone in the PPH-1...

The charger pins are 1 and 2 from the pop-port are easy to find in the PPH-1. The rest is bit more tricky. There are five wires other than the red-black 6v Vin and GND (why 5 - it is a 4-pole connector! - oh, I got it there is a yellow cable going straight from the ext mike socket in the PPH-1 to the GND in the charger plug going into the phone)

Should ACI be connected somewhere?
Should I short pins 12 and 14 (and 11 13) to convert to mono?
Where should the shield GND be connected?
Is there anything else I should worry about?
Mateusz[/url]