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Cisco uBR924 Software Configuration Guide
OL-0337-05 (8/2002)
Chapter 1 Overview
Supporting Multiple Classes of Service
When one of the phones connected to the Cisco uBR924 router is taken off-hook, the router sends an
Unsolicited Grant (UG) request to the CMTS, which responds by assigning a SID for that voice call. This
dynamically-created SID is assigned a secondary CoS profile that matches the type of call being made
(voice or fax). When the voice or fax call terminates, its SID is deleted so the bandwidth can be used by
another user.
Creating Multiple Profiles
In both DOCSIS 1.0 and 1.1 environments, the provider must create and maintain multiple CoS profiles
for voice and fax users. Typically, different CoS profiles are used for voice and fax traffic because these
services use different codec algorithms that have different timing requirements.
The provider could assign the same CoS profiles for all voice and fax users, or the provider could create
a number of different CoS profiles that provide different levels of service, depending on the number of
voice lines and other services purchased. This latter approach requires a method of associating a
particular profile with specific users.
For this purpose, Cisco offers a set of software products for DOCSIS provisioning of different CoS
profiles:
• User Registrar for subscriber self-provisioning and administration
• Modem Registrar for cable modem management
• Cisco Network Registrar for DNS and DHCP services
• Access Registrar for RADIUS services in one-way modems and roaming
This set of software products can be used by the service provider deploying a subscriber provisioning
system. The following sections describe each product in brief; for complete details, see the
Cisco Subscriber Registration Center documentation set, available in the Network Management section
of CCO and the customer documentation CD-ROM. Also see the Cisco Network Registrar for the
Cisco uBR7200 Series documentation.
User Registrar
User Registrar (UR) provides a set of web pages and extensions that enable subscriber self-registration.
User Registrar addresses the needs of three separate classes of users in the provisioning system
implemented by the customer (typically a service provider). This software tool addresses the needs of
the:
• Subscriber who may be signing up for network services for the first time, or augmenting services.
The set of options for the subscriber is determined by the customer and will change between
customers, even in the same industry.
• Administrator who will be called on to generate reports for individual users, generate system wide
reports and resolve provisioning system problems that a subscriber may have.
• Configurer who is responsible for making modifications to the templates and workflows that define
a customer’s solution. This role may also involve building interfaces to the customer’s existing
business systems.
User Registrar includes the following features:
• Web-based user interface, including HTML templates workflow scripts that provide a sample
out-of-the-box user provisioning system with a set of “extension points” for the most anticipated
customizations.
• Multi-level subscriber service privileges