On Call Computer Solutions operates as a cybersecurity and compliance-focused Managed Service Provider, specifically calibrated for defense contractors and organizations that handle Controlled Unclassified Information (CUI). The threat model here is clear: lose compliance with frameworks like DFARS, NIST SP 800-171, or the Cybersecurity Maturity Model Certification (CMMC), and you lose the contract. Founded in 2003, the company has built its practice around the regulatory realities that govern the defense industrial base - ITAR, DFARS, CMMC preparation - where a failed audit isn't an abstract risk but a direct pipeline to lost revenue.
The technical domains map directly to federal requirements. Their service stack includes hands-on NIST SP 800-171 consulting, CUI protection programs, and managed compliance services designed to keep organizations audit-ready over time, not just at a single point of assessment. For teams in aerospace, defense manufacturing, engineering, and machine shops - the subcontractor tier that actually touches the supply chain - this is operational security translated into policy, access controls, and documentation that satisfies federal reviewers.
On Call works nationwide, supporting organizations that serve the U.S. military and federal government. The company's focus is narrow by design: if your environment processes CUI or falls under ITAR jurisdiction, the compliance framework is non-negotiable, and On Call positions itself as the team that keeps you inside those lines.
