A medical device system for controlling automated delivery of therapeutic stimulation pulses, comprising: a transducer for emitting a trigger signal; a first device configured to: sense a plurality of physiological events; and control the transducer to produce a plurality of trigger signals in response to the sensed plurality of physiological events, the plurality of trigger signals having a first combined total time duration over the plurality of physiological events; a second device configured to: detect the plurality of trigger signals; and deliver a plurality of therapeutic stimulation pulses in response to detecting the plurality of trigger signals, the plurality of therapeutic stimulation pulses having a second combined total time duration over the plurality of physiological events that is greater than the first combined total time duration; and characterized in that the first device is configured to control the at least one trigger signal to contain the stimulation pulse control parameter information by controlling at least one of a trigger signal width, a trigger signal pulse number and a trigger signal interpulse interval; and the second device is configured to determine the stimulation pulse control parameter by determining at least one of the trigger signal pulse width, the trigger signal pulse number and the trigger signal interpulse interval a transducer for emitting a trigger signal; a first device configured to: sense a plurality of physiological events; and control the transducer to produce a plurality of trigger signals in response to the sensed plurality of physiological events, the plurality of trigger signals having a first combined total time duration over the plurality of physiological events; sense a plurality of physiological events; and control the transducer to produce a plurality of trigger signals in response to the sensed plurality of physiological events, the plurality of trigger signals having a first combined total time duration over the plurality of physiological events; a second device configured to: detect the plurality of trigger signals; and deliver a plurality of therapeutic stimulation pulses in response to detecting the plurality of trigger signals, the plurality of therapeutic stimulation pulses having a second combined total time duration over the plurality of physiological events that is greater than the first combined total time duration; and characterized in that the first device is configured to control the at least one trigger signal to contain the stimulation pulse control parameter information by controlling at least one of a trigger signal width, a trigger signal pulse number and a trigger signal interpulse interval; and the second device is configured to determine the stimulation pulse control parameter by determining at least one of the trigger signal pulse width, the trigger signal pulse number and the trigger signal interpulse interval detect the plurality of trigger signals; and deliver a plurality of therapeutic stimulation pulses in response to detecting the plurality of trigger signals, the plurality of therapeutic stimulation pulses having a second combined total time duration over the plurality of physiological events that is greater than the first combined total time duration; and characterized in that the first device is configured to control the at least one trigger signal to contain the stimulation pulse control parameter information by controlling at least one of a trigger signal width, a trigger signal pulse number and a trigger signal interpulse interval; and the second device is configured to determine the stimulation pulse control parameter by determining at least one of the trigger signal pulse width, the trigger signal pulse number and the trigger signal interpulse interval