Chase paymentech api for classic?

Summary:

Migrating to OSF from classic. Using OOTB Chase Paymetech gateway on classic. Need to know what API classic is using to build the integration on OSF.

Content (required):

On review, it appears chase paymentech has many different integration options. Would like to confirm classic is using the orbital-api found here: https://developer.jpmorgan.com/products/orbital-api/guides/overview If not, please let us know what API is being used.

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):