ocr: Central office DSL modem bridgel internet Digital Subscriber DSL Access Mulbplexer Line (DSL) modem (DSLAM) Enterprise (oricge) network Figure 2. Practically every Digital Subscriber Line (DSL) modem uses ATM to link to a DSL Access Multiplexer (DSLAM) at the central office of a Local Exchange Carrier (LEC). In many cases, ATM Permanent Virtual Circuits (PVCS) will be provisioned all the way from an ISP or an enterprise network to the DSL modem at the customer premises.
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