Setting this to a value 1 through 4 deletes or invalidates the corresponding HDLC address slot, matching the numbering of cdmipSatelliteHdlcAddress1 through 4, after which that slot displays as 0, or NOT-DEFINED, on subsequent reads. This is the only documented way to clear a previously assigned HDLC address rather than overwrite it with a new value, which matters when retiring a service, since simply setting a slot's address object to 0 might not be equivalent to a proper deletion of that entry. Setting this to 3 after decommissioning the telemetry stream assigned to slot 3 clears that address, and cdmipSatelliteHdlcAddress3 would then read back as 0 to confirm the deletion took effect.