This read-write Integer32 (0-255) is the maximum number of consecutive retransmission attempts before the connection is considered broken, where 0 means retransmission is attempted forever, and it is a negotiable parameter agreed between the MGC and gateway. An admin cares because this determines how tolerant the session is of sustained packet loss before declaring the connection dead. For example, an operator on an unreliable link who wants the session to never give up on retransmitting would set this to 0.