The Cisco 6160-IP DSL switches allow a maximum of 256 ports per chassis and be provisioned with ADSL and SDSL. The 6160-IP DSL is a 32-slot, multi-port line card architecture that delivers industry standard technologies. The 6160-IP DSL supports NEBS, ANSI and ATM network standard. Frontier offers used and refurbished 6160-IP DSL switches. Call Frontier today or request a quote. 866-226-6344