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The high-capacity tandem switch can serve dual purposes as an access point for network traffic entering and exiting a carrier's local network, and as the center in a "hub-and-spoke" architecture, switching voice and data traffic between multiple end offices.
(261.) If a CMRS provider interconnects its MTSO with a LEC at the LEC's tandem switch rather than at an end-office switch, the LEC incurs tandem switching costs in addition to end-office switching costs to complete a call.
These are network interface devices; local loops; local and tandem switches; inter-office transmission facilities; signaling and call-related database facilities; operations support systems and information; and operator and directory assistance facilities.
* Improves call completion on the public switched telephone network by providing tandem switch diversity.