The center of the frequency band associated with this upstream channel. This object returns 0 if the frequency is undefined or unknown. Minimum permitted upstream frequency is 5,000,000 Hz for current technology. See the associated conformance object for write conditions and limitations. The legal range may be restricted further, depending on the provisioned width of the channel. For Docsis: 5.1-41.9 MHz for a 200 kHz channel 5.2-41.8 MHz for a 400 kHz channel 5.4-41.6 MHz for a 800 kHz channel 5.8-41.2 MHz for a 1600 kHz channel 6.6-40.4 MHz for a 3200 kHz channel For Euro-Docsis: 5.1-64.9 MHz for a 200 kHz channel 5.2-64.8 MHz for a 400 kHz channel 5.4-64.6 MHz for a 800 kHz channel 5.8-64.2 MHz for a 1600 kHz channel 6.6-63.4 MHz for a 3200 kHz channel Note that this entry will be read-only if cadIfUpChannelCloneGroupId is nonzero.