The VT818 is an 11U MTCA.4.1 chassis (RTM backplane does not route all the MTCA.4.1 specification signals) that provides twelve full-size, double-width AMC slots. The chassis backplane is routed on high speed low loss material for high speed applications such as 40GbE.
The VT818 has the PinoutPlus™, which allows dual tongue AMC modules to be utilized. The PinoutPlus™ allows more power to each module (up to 200W) as well as adding an additional 21 pairs of high speed differential signals between the two adjacent slots. The use of the tongue 2 connector complies with the AMC.0 specification.
The VT818 has four power supplies for a total of 4400W. Each slot can dissipated up to 360W (including the RTM). The VT818 has an additional power connector on the RTM backplane to allow RTMs to draw up to 160W per slot.
The VT818 has a single MCH slot, Telco Alarm, as well having an option for the JSM (JTAG Switch Module). It provides FCLKA, TCLKA and TCLKB to each slot.
Twelve full-size double-width AMC slots
Rear Transition Module (RTM) with extra power connector
360 W per slot (200 W front module and 160 W RTM)
PinoutPlus™ support, 2nd tongue on all AMC slots
Front to back cooling
Single MCH with TCLKA, TCLKB and FCLKA
Four power supply for a total of 4400W
JSM (JTAG Switch Module) Support