This read-only DisplayString (up to 16 characters) identifies the type of timing oscillator fitted to the Ethernet NTE CSM Card, the reference clock source it uses for synchronization. It matters because different oscillator grades have different stability, and knowing which type is installed on the Ethernet NTE CSM Card tells an administrator how tightly that card can hold timing during a reference loss. For example, when planning a timing-critical deployment, an engineer reads this object on the Ethernet NTE CSM Card to confirm it has the oscillator grade required for the site's holdover specification.