Langerhans' cell histiocytosis can manifest as three distinct clinicopathologic entities: acute disseminated Langerhans' histiocytosis (previously known as Letterer-Siwe disease), unifocal Langerhans' cell histiocytosis (previously known as eosinophilic granuloma).
average handle time (AHT) Average handle time (AHT) is a call center metric for the average duration of one transaction, typically measured from the customer's initiation of the call and including any hold time, talk time and related tasks that follow the transaction. AHT is a prime factor when deciding call center staffing levels.
Components of Handle Time are broken down below: 1  Talk Time is the length of time an agent spends talking with a customer.  Hold Time is a part of AHT, but only when the agent puts the caller on hold. Time customers spend waiting in a queue before speaking with an agent is not included.