Connecting Mic and Speaker to GSM shield

Projects General Guidance
1

Hi, I bought this gsm shield to use with the Uno. I want to connect the speaker and the mic from an old rotary phone to this shield

http://www.ebay.com/itm/NEW-SIMCOM-SIM900-Quad-band-GSM-GPRS-Shield-for-Arduino-with-micro-SD-card-slot-/151121095914?pt=LH_DefaultDomain_0&hash=item232f84ecea

Wires from phone mic.

Speaker wires I presume are white and green and a whole bunch of other wires from the phone connected to the 'phone network'. The connectors look like old spade style.

Here is a pic of the shield,There is only one audio connector I see and I don't know how I would 'plug' these spade connectors into it.

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Here is the schematic of the shield if it helps

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2

Does anybody have an idea? What would go into the audio connector the mic or the speaker?

3

Hi, the circuit diagram looks like it uses a special audio plug with about 3 rings on it, the microphone and speaker are wired through this.
I would be very careful wiring anything to it without any specifications on the board, the speaker in the phone and the microphone are of very different technology, so may not match.

Tom..... :slight_smile:

4

That connector on the board looks like a standard mini-jack, with GND, left, right and mic points.

I'm doing an almost similar project, i've connected the mic and speaker to the ports, but the speaker needs amplification. I have no solution yet.