Synchronous Optical Network (SONET means the optical interface standard that allows inter-networking of transmission products from multiple vendors. The base rate is 51.84 Mbps (“OC 1/STS 1”) and higher rates are direct multiples of the base rate, up to 13.22 Gbps.
Network Integration Transmission Service means the transmission service provided under Tariff, Part III.
Network Service means a Service provided by means of the Network.
Service Switching Point (SSP means the telephone Central Office Switch equipped with a Signaling System 7 (SS7) interface.
broadcasting service means a single, defined service which consists in the broadcasting of television or sound material to the public or sections of the public or to the subscribers to such service;
Integrated Services Digital Network (ISDN means a switched network service that provides end-to-end digital connectivity for the simultaneous transmission of voice and data. Basic Rate Interface-ISDN (BRI-ISDN) provides for a digital transmission of two (2) 64 Kbps bearer channels and one (1) 16 Kbps data channel (2B+D).
Integrated Digital Loop Carrier means a subscriber loop carrier system that is twenty-four (24) local Loop transmission paths combined into a 1.544 Mbps digital signal which integrates within the switch at a DS1 level.
Core Network means the transport infrastructure identified in accordance with Chapter III of Regulation (EU) No 1315/2013;
Support Service means an activity, such as information technology, accounting, human resources, legal, and other support functions that are required to support the ongoing delivery of core services.
Universal Digital Loop Carrier (UDLC means the DLC system that has a CO terminal channel bank that is connected to the CO switches on the analog side.