[Asterisk-Users] Asterisk and Credit Card Machines

[Adam Lewis]

Yet another alternative would be to process credit cards over the
Internet.  Of course then you need a PC at the POS, but Internet card
processing is much faster than using the modem in a stand alone
terminal (no dial/negotiation for each transaction)

BTW, from my experience with fax, I would not terminate a modem device
to anything but analog PSTN.  Credit card systems have an even lower
user tolerance for unreliablity...if the CC terminal is unreliable
people will lose trust in the whole system because they will be losing
money.  Just my $0.02

On 17/05/05, Rich Adamson <radamson at routers.com> wrote:
> > I am planning to deploy an Asterisk server at a local restaurant and was
> > thinking:  I hear a lot of troubles using fax machines with IP trunks.
> > What about using Credit Card readers?  Same basic technology right?  A
> > slow modem to negotiate the transaction.  Does anyone have any caveats?
> > Suggestions?
> >
> > Incidentally, the credit cards might be on POTS lines with a Digium
> > TDM22B.  Any concerns using this arrangement?
> 
> Better test it before making any commitments. The credit card reader
> will be using a modem, and modem transmissions throught the TDM card
> have been problematic for a large percentage of those using it.
> 
> There are a very large number of potential show-stoppers with it, and
> the majority seem to be system dependent. Therefore comments from
> others will be almost useless in terms of ensuring an operational
> system.
> 
> Having worked with several relative to TDM problems, I'd have to guess
> that somewhere near 90% of the implementations won't handle fax/modem
> calls. However, I have no idea whether those problems will impact the
> slower-speed credit card reader modem use.
> 
> If it doesn't work, a reasonable alternative might be to use an
> spa-1000 (or the equivalent), but that would need to be tested as well.
> 
> 
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