CDCR Request Form (external link PDF)
CDCR form 106-A was created to correspond with the approval process described in 15 CCR 3282, as revised in procedures manual NCDOM #08-04, Chapter 5, Article 21 (Inmate use of telephones), effective February 29, 2008.
Note the bold italics near the bottom for the form suggesting that a letter from the attorney, on letterhead, explain the reason the call is needed, should accompany this form.
Read the accompanying Regs, especially 15 CCR §3282(g)(1)-(2). If you run into any difficulties with scheduling a timely confidential phone call at the prison, contact the prison litigation coordinator.