Plain old telephone service. For direct inward dialing service, the telephone company provides one or more trunk lines to the customer for connection to the customer's PBX, and allocates a range of telephone numbers to the customer. Calls to such numbers are forwarded to the customer's PBX via the trunks.
A railgun is an electrically powered electromagnetic projectile launcher based on similar principles to the homopolar motor. railgun consists of two parallel metal rails (hence the name) connected to an electrical power supply. When a conductive projectile is inserted between the rails (at the end connected to the power supply), it completes the circuit.
A Kagune is a ghoul's predatory weapon that functions as it's weapon or claws. Each Kagune is different and no two ghouls can have the same form to their Kagune. The Kagune is released when a ghoul becomes excited and the RC cells held in their Kakuhou sack are stimulated. The Kakuhou sack is found in different areas of a ghoul depending on the type of Kagune a ghoul has. When a ghoul releases their Kagune their weapon and ability come from the area their Kakuhou sack is held. There are 4 distinct type of Kagune each with their individual benefits and draw backs.