Question about VeriFone (M19755014US1) Magnetic Card Reader

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COMM ERROR on Verifone 3750

When trying to run a transaction, the words "COMM ERROR" pop up. How can this be fixed?

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This could be a number of things.
#1 do you have DSL internet service? If so do you have a DSL filter between the jack and your terminal?
#2 Do you have digital phone service? Vontage or Comcast will cause this problem . Especially upon batching out the terminal.
#3 Check the blind dial setting within the other setup option. This option is buried, so it will require a phone call to Merchant service Provider.

If none of these work, then it is time for a new service. Place a call the Heartland Payment Systems Credit Card Processing and change your card service provider. The only card service provider that has a merchant bill of rights and field service techs (for free).

Posted on Nov 28, 2008

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Make sure that your phone cord is plugged in and is working. You should check with your merchant services and see if anything is going wrong on their end as well.

Posted on Nov 17, 2008

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