An edge connector suitable for attachment with a printed circuit board. The first end-user device is associated with a first call leg and the second end-user device is associated with a second call leg. The member may enable or disable all their mobile alerts using a single action, such as toggling a digital button on their phone screen. It uses the received signal and the identity of the source transmitter station to determine the position of the mobile receiver unit. If the address stored on the storage unit is usable, the device uses the address. Each tablet comprises a starch, a water-soluble excipient and a medicament and does not substantially contain a binder other than starch.