Faxing without a faxmachine

High Security Solutions

Your data is your most valuable property - because of this it deserves the highest priority! GTC InterFAX provide you with a lot of options to ensure that your fax communication meets the highest security requirements.

Beyond the possibility of encrypted communication, through our unique feature of automatically deleting the received faxes - GTC InterFAX is committed to offering secure services of the highest level.

High Availability

Your advantages

  • Automatic failover during
    system crisis.
  • Transparent service transition.
  • Low additional cost per transaction.
  • Available to the InterFAX outbound Web Service.

Ideal for

  • Order portals on the Internet
    e. g. Pizzaservice, which receive orders by fax.
  • Service providers, which don´t tolerate failures in their business.
  • Services that don´t allow delays.

For the "normal" InterFAX transmission, we have an almost 100% availability of our systems. But there are services that require higher security. 


InterFAX - High Availability measure up to this service: Based on two data center systems with automatic failover in the event of system failure, the service ensure the delivery of your data.

PCI-DSS fax services

If you offer payment by credit card, you have to protect the data used in accordance with PCI DSS requirements.

PCI DSS ("Payment Card Industry Data Security Standard") is a set of requirements which all companies have to achieve by store or transmit credit-card information.

PCI DSS certified solutions of GTC InterFAX will measure you up to all requirements.

Send fax

  • Encrypt outgoing faxes while they are stored on seperate servers.

  • Connection via API

  • Send faxes via Web-Service

  • Detailed report of your fax sending

Receive fax

  • individual fax numbers for receiving faxes
  • Get information about incoming faxes by email with a direct link
  • Access incoming faxes in the secure customer area
  • Access documentation


Martina Assenmacher

Ingram Micro Pan Europe GmbH

"The sending of our newsletter takes only a few minutes – nevertheless it is handled in a very professional way. We are not in need of additional software and do not have to enter a long term commitment. That’s how we stay flexible. Furthermore we really appreciate the support of the attentive GTC-employees."


Uwe Streb

Festina Uhren GmbH

"The customer service gave us great advice. Now we are getting much more out of our actions, can make campaign comparisons and achieve exactly what we want."


Jürgen Klein


"GTC is our long-standing partner for sms and e-mail boradcasting and is very reliable. Thumbs up."


Bettina Holz

X-PERION Consulting AG

"Our employees are on the road throughout Germany, partly even in Europe. A regular coordination is essential here. We are completely independent with GTC central meeting: all participants are dialing themselves in via telephone. It doesn’t matter, where the participants are. Even the dial-up from abroad happens at low costs, due to international access numbers."


Edgar Augel

Stadtmobil carsharing AG

"E-mailings created with the template editor look great. In addition, our mailings now always adapt to the size of the receivers with responsive design. Fantastic."


Roland M. Rupp

Schweizerischer KMU Verband

"The service at GTC leaves nothing to be desired. Also the simple operation, the evaluation and the multilingual menu is great."


Christof Korr

CreditPlus Bank AG

"An sms will not be overlooked. Therefore, sms-mailing is our choice when it matters. With GTC, we have found a professional, with which everything runs great. And what is especially important to us is that all data remain in Germany."

Among our satisfied customers
+49 (0)7 11 - 4 90 90-0