Accounting separation is being implemented in Oman to regulate the telecom market. It requires dominant operators like Omantel to prepare separate financial statements for different business lines to increase transparency around costs, revenues, and internal transactions. This aims to prevent anti-competitive behavior by ensuring non-discriminatory treatment of competitors. Oman's telecom regulator TRA specifies parameters for the cost accounting model and uses results from regulatory accounting to conduct tests around margin squeeze, predatory pricing, and cross-subsidization. The Oman model provides a framework for implementing accounting separation as a regulatory tool.