small logo DLS-1080 GR303 FOR THE DCO


THE UBIQUITOUS GR303 PROTOCOL

THE EVOLUTION OF THE DIGITAL LOOP CARRIER

Digital Loop Carriers began with TR-57, a Bellcore standard for extending the analog loop with T1 spans. But TR-57 did not replace analog line cards in the switch - it only added more of them, temporarily converting POTS back to digital in order to extend tip & ring further out.

Enter the Integrated Digital Loop Carrier, where the spans to digitally carry POTS originate in the switch itself. As originally conceived, IDLT spans would go directly from the switch to the Remote Digital Terminal, saving money by removing the unneeded line cards in the Central Office.

Then came the Broadband Loop Carrier that integrated DSL service with the POTS cards at the RDT. Now a Central Office Terminal was needed to groom the voice services from the DSL or FTTH data services. The IDLT is how voice is backhauled from the COT to the switch.

WHY GR303?

THE STROMBERG DCO - THE SWITCH THAT WAS LEFT BEHIND

THE DLS-1080