A cutting tooth for use with a stump cutting apparatus wherein the cutting tooth has a removable and replaceable cutting bit. The housing includes an insertion recess into which a shaft-like terminal is inserted along a first direction. In response to receiving the signaling message, an IP telephony transaction instance is instantiated to process the signaling message. In an embodiment, a substrate, such as a die, wafer, printed circuit board, packaging substrate, or the like, having T-shaped posts is attached to a contact of another substrate, such as a die, wafer, printed circuit board, packaging substrate, or the like.