This chapter describes the modifiers for TL1 commands and autonomous messages for the Cisco ONS 15454, Cisco ONS 15310-CL, Cisco ONS 15310-MA, and Cisco ONS 15600. Table 28-1 details the TL1 modifiers for commands that have carets (< >) in part of their input format; for example, RTRV-<OCN_TYPE>. A "Yes" in the platform column indicates that a particular modifier is supported in that platform. A "No" in the platform column indicates that a particular modifier is not supported in that platform.