When set to a non-zero value greater than lmpCcHelloDeadIntervalNegotiated, the object overrides the value of lmpCcHelloDeadIntervalNegotiated for a control channel to indicate how long the device should wait (in milliseconds) before declaring that control channel dead. When set to a non-zero value less than or equal to lmpCcHelloDeadIntervalNegotiated for a control channel, this field has no effect for that control channel. When set to zero (the default value), this field is not used by LMP. Use of this object is strongly discouraged because not detecting control channel failure in a timely manner can cause negative effects. For example, as follows. - BeginVerify messages will continue to be retried after lmpCcHelloDeadIntervalNegotiated has expired, which will block anonymous verification of TELs with other neighbors. On hardware with limited termination capability for sending Test messages, this behaviour might block all link verification to all neighbors, not just anonymous verification. - If there are multiple control channels to a neighbor and the primary control channel fails, DC-LMP will continue using the failed control channel to send all message types that are not control channel specific, rather than another control channel becoming the primary control channel. Hence the neighbor will not receive any of these messages. - Hello messages, and message types that are not control channel specific, continue to be sent over the control channel after the lmpCcHelloDeadIntervalNegotiated has expired. This behavior does not conform to RFC 4204. However, this object can be set to a non-zero value when - the local node wishes to support LMP Graceful Restart procedures for neighbors that restart and - LMP neighbors may take longer to restart than the maximum possible value for the lmpCcHelloDeadIntervalNegotiated. The object should be set to a value that is as small as possible because of the negative effects listed above. This field may be changed at any time. The new value is used the next time that the HelloDead timer is started for each Control Channel.