GL7600, AT Command for Pin SIM Card

I have a new GL7600 Modem and I like to set the Pin code for the SIM Card.
I have entered: AT+CPIN=<6895> then sent, but did not work.
How is the correct Command for set it?

Hi Martin,

when you see in the AT command user guide, that means you have to replace all this text (< and > included) by the value or the text can change according to the context (like an error code). Here, the command must be used as is: