OSS prides itself on having provided the highest quality support services for 30 years to 1500+ customers worldwide ranging from small startups to large, multi-national corporations in various industries. Hundreds of positive customer comments are a testament to the unmatched quality, technical expertise, and efficiency of the support services OSS provides.

Customer Area

Already a customer? Visit our Customer Area section for product updates and additional information.

Product Documentation

Wonder what our software API and various compilers options look like? See our user manuals in the Product Documentation section.

Knowledge Center

Have a question about how one of our products works? Search for the answer in our extensive Knowledge Base, with information about how to use our tools, sample code, and hints that will speed up your development.

Free Trial Download

Not a customer yet? You may want to check out our Download section for free trials of our ASN.1, Efficient XML, and 5G & LTE tools.

Learn ASN.1
Learn ASN.1

Our expert personnel can help you learn ASN.1!

We offer 4-day ASN.1 courses at our headquarters or your premises.

Contact Support
contact Our office hours
24 hours/day, 7 days/week

  • Phone: 1-888-OSS-2761 (USA and Canada)
  • Phone: 1-732-302-9669 (International)
  • Fax: 1-732-302-0023
  • Email: