Subform Opens New Form That Gets Its Info From Main Form

I'm working on a project that has two tables. "Calls" and "Customers". The Customers form has a subform, "Calls Subform" in it. When you click on the (New) Hyperlink a new form opens, "Call Details". I would like to pull information off of the "Customers" Form and insert it into the newly opened "Call Details" form.

Problem #1) Home Phone (named "Phone" and Text223 (named "CID"): are both bound controls so I have to do this in an OpenArgs type process.

Further details:

On "Customers" the following is true:
"25" is the "ID" for that customer on the "customers" table
"Home Phone" is the home phone number on the "Customers" table

On Call Details the following is true:

Home Phone is Bound to a table "Calls" and needs to pull it's data from Customers Form..Text223 is CID and bound to the table "Calls" and needs to pull it's data from "Customers" form.