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2 Release Notes for Cisco uBR924 Cable Access Router for Cisco IOS Release 12.0 XI

Introduction

The Cisco uBR924 cable access router is part of a new class of Cisco data-over-cable products. The

Cisco uBR924 cable access router is DOCSIS-based and interoperates with any DOCSIS-compliant

headend. It integrates a 4-port 10BaseT hub and 2 RJ-11 VoIP telephone jacks into a single compact

design. The Cisco uBR924 cable access router can be conﬁgured to support data, voice, or a mixture

of data and voice.

System Requirements

This section describes the system requirements for Release 12.0(4)XI and includes the following

sections:

• Memory Requirements, page 2

• Headend Voice Interoperability, page 2

• Hardware Supported, page 3

• Determining the Version of Your Cisco IOS Software Release, page 3

• Upgrading to a New Software Release, page 4

• Feature Set Tables, page 4

Memory Requirements

Headend Voice Interoperability

To support differentiated voice services should you have Cisco uBR7200 Series headend equipment,

use any Cisco IOS Release 12.0(4)XI image or higher. These headend images allow the deﬁnition

of multiple Service Identiﬁers (SIDs) on the upstream. Voice trafﬁc can then be designated on higher

Quality of Service (QoS) secondary SIDs, while data trafﬁc can be forwarded on a primary SID. That

way, higher QoS SIDs receive preferential treatment at the headend for grants over any tiered "best

effort" type data SIDs on that upstream.

To conﬁgure the Cisco uBR924 cable access router to support multiple classes of service, use the

conﬁguration ﬁle editor of your choice. DOCSIS conﬁguration ﬁles can contain three Classes of

Service (CoS) to support voice. The ﬁrst CoS can be used for data (and voice if no other CoS are

deﬁned). The second and third CoS can be used for voice from each of the two telephone ports on

the Cisco uBR924 cable access router.

Table 1 Memory Requirements for the Cisco uBR924

Feature Set Image Name

Flash

Memory

Required

DRAM

Memory

Required

Runs

From

Feature

Status

IP Routing Standard Feature Sets

Home Ofﬁce ubr920-y5-mz 4 MB Flash

1 These are standard Cisco factory assignments.

16 MB DRAM

RAM Image available in

Release 12.0(4)XI

Home Ofﬁce with

Voice

ubr920-v4y5-mz 4 MB Flash

16 MB DRAM

RAM Image available in

Release 12.0(4)XI

1 2 3 4 5 6 7 ... 17 18

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