NBA players will begin voting on the proposed collective bargaining agreement Wednesday afternoon, according to a letter obtained by SI.com.

With the tentative agreement expected to be ratified and training camps unofficially set to open Friday, the memo from National Basketball Players Association head Billy Hunter to players states that electronic voting will begin at 1 p.m. ET on Wednesday and continue until 4 p.m. Thursday.

The NBPA will hold a meeting with players in New York on Wednesday to discuss the proposed CBA, as well as a conference call later that evening for those who can not attend. A "detailed term-sheet" of the CBA will be e-mailed to players by Wednesday as well.