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6100 : AT commands over rs232

From: John Coemans
Subject: 6100 : AT commands over rs232
Date: Fri, 03 Dec 2004 21:27:18 +0000


Is AT comands sent over the MBUS or the FBUS ?

I build myself a voltage converter that seems to work (the loopback is working fine when connecting RX and TX together) , but the phone doesn't respond...

Should I connect other pins than just FBUS RX, TX and GND ??? What about the USBPowDet pin ?

Even the Nokia PC suite doesn't detect the phone.....I bought a data cable, but exactly same problem, I opened the data cable and as my own circuit only 3 wires are connected : RX,TX, GND.

How can this work ? I am simply interested in connecting my phone to Hyperterminal and send AT commands to it. I need a RS232 interface because the ultimate goal is to connect the phone to an embedded DSP.

The Nokia 6100 has the 14 pin connector....

Any help would be greatly appreciated.



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