How do Strymon pedals send/receive MIDI messages sent via 1/4″ TRS MIDI cable?

On our pedals equipped with a 1/4″ TRS MIDI connection (Riverside and Sunset), the MIDI data is received by the pedals from the TIP of this connection.  When MIDI OUT or THROUGH is enabled on these pedals, the MIDI data is sent out of the pedal from the RING of the TRS connection.