aal1 Ces L Co Required Security

This attribute indicates the required minimum level of security of the trunks on the route. Zero represents the most secure and seven represents the least secure. The trunk's security is indicated by the trunkSecurity attribute of the Trunk component, and has values identical in range and meaning to the requiredSecurity attribute. PORS ensures that any route selected does not contain a trunk whose trunkSecurity attribute is numerically greater than the requiredSecurity.