Hi Anthony, a PDQ/credit card machine would never work plugged into the AUX 
port on a 7841. What I’d imagine is happening is that it’s an ethernet capable 
PDQ (we have many of them on our site) that’s been connected to the PC Port on 
the back of the phone and is connecting to the local network in this way.

When our site moved to VOIP we had to upgrade all our POTS PDQs to ethernet. We 
didn’t want to continue to provide analogue lines at all on campus and we were 
old that banks wouldn’t be happy with financial data transiting our LAN if we 
used an ATA to provide an analogue line via the callmanagers.

The ethernet PDQs, by contrast, bring up a heavily encrypted VPN tunnel back to 
the bank’s systems and they are more than happy for these to be connected to 
LANs and the public Internet.

Hope that helps in some way.


---
/-Gary Parker----------------------------------f--\
|     Unified Communications Service Manager      |
n       Loughborough University IT Services       |
|     Tel: +441509635635  Mob: +447989172258      o
|     http://delphium.lboro.ac.uk/pubkey.txt      |
\r----------------------------------------------d-/

> On 22 Jan 2015, at 15:55, Anthony Holloway <avholloway+cisco-v...@gmail.com> 
> wrote:
> 
> Ben,
> 
> Thanks for looking in to this with us.  I appreciate your efforts.
> 
> However, both of those links show that this device must be plugged into 
> Ethernet to work, and therefore is not reliant on the AUX port.  In fact, no 
> where in those pages could I even find a reference to to the AUX port.
> 
> I'll keep looking too.
> 
> On Thu Jan 22 2015 at 9:39:21 AM Ben Story <ben.st...@gmail.com> wrote:
> http://www.cyberdata.net/products/voip/oemendpoints/cardreadernetwork/documentation/010903_930136E_VoIP_Card_Reader_Quick_Ref.pdf
> 
> http://www.cyberdata.net/products/voip/oemendpoints/cardreadernetwork/
> 
> --
> Ben Story
> CCSP, CCNA, CCNA Wireless, CCDA
> ben.st...@gmail.com
> @ntwrk80
> http://showbrain.blogspot.com
> http://rand0mw0rds.blogspot.com
> 
> 
> "From sour-faced saints and silly devotions, good Lord, preserve us!". -- St. 
> Teresa of Avila
> 
> On Thu, Jan 22, 2015 at 9:33 AM, Anthony Holloway 
> <avholloway+cisco-v...@gmail.com> wrote:
> Thanks for the information Ben.
> 
> I looked over that website and didn't find any product to suggest this was 
> possible, and a google search on their site provided no results either.
> 
> https://www.google.com/#q=%22auxiliary+port%22+OR+%22aux+port%22+site:cyberdata.net
> 
> It's be great to find evidence of this if you have it.
> 
> 
> On Thu Jan 22 2015 at 8:43:15 AM Ben Story <ben.st...@gmail.com> wrote:
> I've seen such things at Cisco Live! before.  Not much about it on their 
> website, but this place seems to have add ons for the Cisco phones including 
> card readers. http://www.cyberdata.net/products/voip/index.html
> 
> --
> Ben Story
> CCSP, CCNA, CCNA Wireless, CCDA
> ben.st...@gmail.com
> @ntwrk80
> http://showbrain.blogspot.com
> http://rand0mw0rds.blogspot.com
> 
> 
> "From sour-faced saints and silly devotions, good Lord, preserve us!". -- St. 
> Teresa of Avila
> 
> On Wed, Jan 21, 2015 at 9:51 AM, Anthony Holloway 
> <avholloway+cisco-v...@gmail.com> wrote:
> 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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