Glossary

Cable modem termination system such as a router or bridge, typically located at the cable headend.

A DOCSIS option that is composed of a number of suboptions. For example, options 4 and 24 are compound options.

DOCSIS cable modem. DOCSIS CMs obtain boot configuration using DHCP, Time, and TFTP client implementations.

A file containing configuration parameters for a DOCSIS cable modem. The cable modem obtains this file at boot time using the TFTP protocol.

A built-in option set scoping internal to Modem Registrar, containing pre-defined options for DOCSIS versions 1.0 and 1.1.

A temporary option set scoping based on information gathered from subscribers using User Registrar. The dynamic cable modem scoping is defined as the TFTP server assembles the DOCSIS configuration file.

Graphical User Interface.

Lightweight Directory Access Protocol version 3 (RFC 2251). A protocol that enables access to a directory database.

A DOCSIS option that can occur multiple times in an option set.

A DOCSIS option classification. Option categories are simple and compound. Simple options do not contain suboptions (for example, options 1, 2, 10, and 11). Compound options do contain suboptions (for example, options 4, 15, and 22).

Specifies how an option from a more specific option set overrides or combines with an option from a less specific option set. Possible rules are replace, append, or suppress.

The collection of DOCSIS options and their values that exist at a particular option set scoping.

Special purpose units, containing option sets and DOCSIS options. Scopings are configured from most general to most specific scoping. The default scoping is the most general scoping that is configurable and the cable modem scoping is the most specific scoping that is configurable. The option set scopings from most general to most specific are: DOCSIS version scoping, default scoping, CMTS group scoping, CMTS scoping, subnet scoping, vendor scoping, cable modem scoping, and dynamic cable modem scoping.

Determines which value of an option is applied to a cable modem. Options defined in the most specific option set scopings take precedence over the same options defined in more general scopings. Within an option set, common options always have a lower precedence order than a specific service tuple if the cable modem has an associated service package. If a service package is not associated with the cable modem, the TFTP server uses the common options.

The creation of an active subscriber account, or modification of parameters for an existing subscriber account. Provisioning of a subscriber account includes subscriber account registration and device activation.

The process of supplying the personal information needed to establish a subscriber account.

A collection of service types required for a specific service offered. Each service class includes the attributes and values that define the type or quality of service associated with a given class. For example, data connectivity is a service class you might define that includes the service type data-bandwidth.

The various levels and quality of services defined for each service type. For example, the service type called quality of sound might have service levels defined for telephone, broadcast, and digital CD.

A quality of service that a cable provider offers subscribers. For example, Basic Student, Family Plus, and Internet are possible service packages. Subscribers may choose one or more service packages. A service class is selected for each service package, defining which service types make up the service package.

A service type and level pair. For example, the service tuple data-bandwidth=45 Mbps consists of the service type data-bandwidth and the service level 45 Mbps.

A component of a service that cable providers offer subscribers. For example, devices-supported might be a service type defined for the home networking service, indicating the number of computers the subscriber can connect to the cable network from home. One or more service levels is defined for each service type.

A DOCSIS option that is a major option number and does not contain suboptions.

A DOCSIS option that can occur only once in an option set.

An option that is split across option sets. All single-instance compound options are splitable options. This means that the TFTP server can assemble the suboptions of a single-instance compound option from more than one option set. For example, option 15 is a splitable option.

Components of a compound DOCSIS option. For example, 4.1 through 4.7 are suboptions of option 4.

The person who obtains network service by self-provisioning using User Registrar.

Trivial File Transfer Protocol version 2 (RFC 1350). TFTP clients obtain files from TFTP servers without the use of client authentication (for example, username and password).

Time Protocol (RFC 868). Time clients obtain the current time-of-day within one-second resolution from Time servers.