This sets the silent interval between successive forward pulse tones for outgoing R2 registers in non-compelled, pulse, signaling. Together with ccasRSTOutFwdPulseOnTimer, this defines the complete pulse cadence for dialed digits on this trunk, and a mismatch versus what the far end's pulse detector expects, on top of a wrong on-time, compounds into unreliable digit reception on non-compelled R2 trunks. A cadence of 60 ms on and 60 ms off configured via these two objects would need to match the far-end exchange's expected pulse timing for digits to be read reliably on that pulsed R2 trunk.