Editing DOCSIS (section)

=== Data link layer ===
* DOCSIS employs a mixture of deterministic access methods for upstream transmissions, specifically [[time-division multiple access]] (TDMA) for DOCSIS 1.0/1.1 and both TDMA and S-CDMA for DOCSIS 2.0 and 3.0, with a limited use of contention for bandwidth reservation requests. In TDMA, a cable modem requests a time to transmit and the CMTS grants it an available time slot.<ref>{{Cite web |title=Understanding Data Throughput in a DOCSIS World |url=https://www.cisco.com/c/en/us/support/docs/broadband-cable/data-over-cable-service-interface-specifications-docsis/19220-data-thruput-docsis-world-19220.html |website=Cisco |access-date=February 21, 2024 }}</ref>
* For DOCSIS 1.1 and above, the data layer also includes extensive [[Quality of service|quality-of-service]] (QoS) features that help to efficiently support applications that have specific traffic requirements such as low latency, e.g. [[voice over IP]].
* DOCSIS 3.0 features [[channel bonding]], which enables multiple downstream and upstream channels to be used together at the same time by a single subscriber.<ref name="cablelabs.com">{{cite web |url=http://www.cablelabs.com/news/pr/2006/06_pr_docsis30_080706.html |title=CableLabs Issues DOCSIS 3.0 Specifications Enabling 160 Mbps |publisher=CableLabs |access-date=December 2, 2017 |archive-url=https://web.archive.org/web/20101120234649/http://cablelabs.com/news/pr/2006/06_pr_docsis30_080706.html |archive-date=November 20, 2010 }}</ref>