Caller ID Caller ID services is available for this single line phone. Equipment however (i.e., the Caller ID box) is supplied by the user. Sample analog Caller ID box format: 55555 TELE 222 (Extension)(Building Abbreviation)(Room #) All of this information must be sent due to 911 requirements. ITS is unable to make any specific brand or model recommendation due to the immense variety of Caller ID boxes and telephones with built-in Caller ID capabilities. Need Help? Call 735-HELP to speak with a Customer Service staff person.