The Bureau of Diplomatic Security (DS) seeks commercial off-the-shelf (COTS) Security Intercom Systems (SIS) for audible communication at U.S. Department of State facilities. Respondents must detail which requirements are met, provide technical specifications, images, and a cost rough order of magnitude. The company must have a robust technical support group for documentation, updates, and training. No specific budget, submission timeline, or performance location is mentioned in this description. This is a Request for Information (RFI) to identify available systems, not a procurement solicitation.