The Data Over Cable Service Interface Specifications (DOCSIS) are a set of specifications for data communications and voice communications over a single Internet Protocol (IP) cable infrastructure. Cable Television Laboratories, Inc. (CableLabs) is a consortium that governs the DOCSIS standard and ensures interoperability, competition, and quality.
The purpose of DOCSIS 1.0 and DOCSIS 1.1, were to respectively enable residential data services and voice services over a single Internet Protocol (IP) cable infrastructure. The 1.0 specification defined the upstream and downstream physical and data link layers necessary to transmit over shared multiple-access cable IP networks. DOCSIS 1.0 specified the basic Quality of Service (QoS) features required to offer tiered services based on rate-limits, and was later enhanced to support minimum guaranteed rates. The DOCSIS 1.1 specification introduced support for constant bit rate services, which greatly enhanced the QoS feature set, and somewhat improved the robustness of the return path, which allowed twice the bandwidth, while providing full backward compatibility with the 1.0 specification.
From an error correction perspective, DOCSIS 1.x uses a Reed-Solomon code with correction of up to 10 bytes per codeword with no interleaving, while DOCSIS 2.0 allows correction of 16 bytes with programmable interleaving.
The table below shows all our DOCSIS compatible devices currently offered as standard products for sale. Contact us at sales@salamander-ecc.com for more information, or to request a custom designed solution.