[cisco-voip] IP Phone 7841 AUX Port and Credit Card Machine

[Anthony Holloway]

All,

I just ran into something very strange, were a customer is stating they are
able to use a credit card machine via the AUX port on the back of a 7841.

The 7841 data sheet and admin guide would suggest that this is not
possible, as their only reference to this port is with the use of a headset.

Now, I know these ports can be used for troubleshooting and/or hacking the
phones, but I have not heard of a legit use like this before.

Can anyone comment on this?
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