This read-write Integer32 (20000-150000 microseconds) sets the end-to-end maximum cell transfer delay objective used when establishing voice SVCs, applicable to both AAL1 and AAL2, sent in the setup message's end-to-end transit delay information element. An admin cares because this value directly bounds the acceptable one-way network delay for the selected route, which affects perceived voice call quality. For example, an operator connecting sites over a long-haul ATM network would need to set this maximum transfer delay high enough to accommodate the physical distance while still catching genuinely excessive-delay routes.