Hi Don!
If you are referring to the the actual attributes that are received from the Object being polled, they are data pulled from the Meraki dashboard, which are relevant to the devices referenced in the polled Object.
Descriptions of the Objects can be found within the Meraki Proprietary MIB, which can be downloaded from the "Download MIB" link under Organization > Configure > Settings > SNMP.
For example, within in the downloadable MIB we see devInterfaceCarrier is listed as an object-type, details a syntax of DisplayString, and a description of "The carrier for the interface. Useful for cellular interfaces." The carrier name may match what you see in the Security & SD-WAN > Monitor > Appliance Status > Uplink under the Cellular > Provider section.
Please let me know if you have any additional questions on this!
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