ARA 2.x connection documents contain additional resources not found in 1.0 connection documents. These resources are used to provide the additional functionality offered by ARA 2.x such as using Dial Assist, dialing an alternate number, and compatibility with 1.0 servers. Despite these differences the documents are interchangeable, ARA 1.0 simply ignores the additional resources. When a user upgrades from 1.0 to 2.x the old connection documents can be used. It is not necessary to create new connection documents. The first time an old document is saved under 2.x it will be updated to contain the new resources.
CCLs written for ARA 1.0 can be used with ARA 2.x but will not support the added features in 2.x such as blind dialing. For example, the Express Modem software provides two CCL files, one for use with 1.0 and one for 2.x. Check with the modem manufacturer for the proper CCL to use.