iBruno wrote:

I am having troubles, to find the decent cable/interface to get this working properly!!

There are many cables that are almost right, so it's important to get the right ones.

I bough converter USB -FTDI 232RLChip- RS232, Converter. IS giving me 6.60v Output..

One part of RS232 is voltage levels, and they are indeed completely wrong for the telephone. They may well destroy the serial port on the phone.

Electronically, what can I do, to adjust for the correct Voltage?

I would avoid this. Find a suitable cable instead. Buy a few different ones that are advertised to support the particular phone.

My phone didn't fry, besides I got connection!

Stop using the cable. The more you use it the more you risk destroying the serial port in the phone.

not completing the task! I believe is because of the amount of power.

Voltage, but yes probably.

If you know a cable that works decently, let me know :-)

FT2232H or FT4232H based cables are the popular ones. Testing with FT2232D (slower USB than H) has not worked so perfectly.

I'd recommend buying a cable with a connector especially made for the phone, because a standard 2.5mm plug does not fit without mechanical rework. Low quality plugs that have been reworked to fit may not make a very good connection, which also causes signalling problems.

//Peter