24 OKIOFFICE 87 User’s GuideSetting the Fax IdentificationMFP machines use the information you enter here to identify themselvesduring communications. In most countries programming this informationinto your MFP machine is a legal requirement. The information you enterhere includes:TSI/CSI: This is the telephone number of your MFP machine. Thisnumber is printed at the top of the faxes you send, and appears on thedisplays and reports of other fax machines you are communicatingwith.Sender ID: This is a descriptive title (usually the location of your MFPmachine or the name of your company or office). This description isprinted at the top of every fax you send. You can enter up to 32 char-acters. The first 16 characters of your Sender ID are also be used asyour Personal ID, which may appear on the displays or reports of otherfax machines you are communicating with.Call Back Number: The Call Back Number is a telephone number (nota fax number) which the operator of the remote machine can use toreach you. If you use the voice request function while communicatingwith another fax machine and no one is there to answer, your MFPmachine automatically sends a cover letter with a call back message.The call back message is printed in a separate sheet with the message“Please call back” and a telephone number where you can be reached.The call back number entered here is the number that appears on thecall back message.4:SYSTEM DATA PRG.YES ( ) NO ( /1-8)+ +SELECTFUNCTIONUSERPROG.9/SPACE GHI41 Press the SELECT FUNCTION key.2 Press the 9/USER PROG. One-Touch key.3 On the numeric keypad, press 4. The display shows 4:SYSTEMDATA PRG.4 Press YES . The display shows NO=, ID=ID>.