The mandible is a U-shaped bone. It is the only mobile bone of the facial skeleton, and, since it houses the lower teeth, its motion is essential for mastication. It is formed by intramembranous ossification. The mandible is composed of 2 hemimandibles joined at the midline by a vertical symphysis.
1 For example, AT&T charges $23 for a home residential line that includes a few additional basic features such as caller ID, call waiting and voicemail. 2  Home phone service plans that include local and long-distance calling cost $30-$45 per month.
1 These plans all assume that one does not have local home phone service from AT&T. 2  Having home phone service and then adding on a new high speed Internet plan from AT&T can add $20-$25 per month for the first year, then runs $20-$40 per month depending on the speed.3  Not all plans are available in all areas.iscounts: 1  For the broadband services, if the customer is able to do a self-installation, there is usually no charge. 2  Having the technician also set up the actual home network or do the computer connection can add $100. 3  For dialup Internet access, an internal PCI modem for the dialup option costs between $8 and $20.