Tandem Office Switch or “Tandem(s)” are used to connect and switch trunk circuits between and among other Central Office Switches. A Tandem Switch does not include a PBX.
AT&T-12STATE means the AT&T owned ILEC(s) doing business in Arkansas, California, Illinois, Indiana, Kansas, Michigan, Missouri, Nevada, Ohio, Oklahoma, Texas and Wisconsin.
Toll Free Service means service provided with any dialing sequence that invokes Toll Free, i.e., 800-like, service processing. Toll Free Service currently includes calls to the Toll Free Service 800/888/877/866 NPA SAC codes. “Toll VoIP-PSTN Traffic” is VoIP-PSTN Traffic that physically originates and terminates in different Local Calling Areas as determined by the Commission.
Calling Name Delivery Service (CNDS means a service that enables a terminating End User to identify the calling Party by a displayed name before a call is answered. The calling Party’s name is retrieved from a calling name database and delivered to the End User’s premise between the first and second ring for display on compatible End User premises equipment.