The Question is:
I need a list of hayes compatible modems that can be used with a vax running
The Answer is :
As far as the OpenVMS Wizard knows, no such list of modems exists.
The list of officially supported devices is included in the OpenVMS
Software Product Description (SPD) for the desired release.
Given that most any AT-compatible (external) modem that can reliably
connect to a remote modem can also connect via a serial line, the
list of potential choices is large.
Please see existing the discussions of modems here in Ask The Wizard.
(There are references to modem discussions in the FAQ, as well.)