CCP 1438     

Art. 1438.  Notice of examination; time and place; subpoena duces tecum

A party desiring to take the deposition of any person upon oral examination shall give reasonable notice in writing to every other party to the action.  The notice shall state the time and place for taking the deposition and the name and address of each person to be examined, if known, and, if the name is not known, a general description sufficient to identify him or the particular class or group to which he belongs.  If a subpoena duces tecum is to be served on the person to be examined, the designation of the materials to be produced as set forth in the subpoena shall be attached to or included in the notice.

The court may for cause shown lengthen or shorten the time for taking the deposition.

Acts 1976, No. 574, §1.