Cisco Cisco IOS Software Release 12.2(15)CX

These release notes describe the following topics:

For information on new features and Cisco IOS commands supported by 
Cisco IOS Release 12.2(15)CX1, see the 

 and the 

The Cisco uBR7200 series universal broadband routers—the Cisco uBR7223, the Cisco uBR7246, and 
the Cisco uBR7246VXR—are based on the Data-over-Cable Service Interface Specification (DOCSIS) 
standards. Each is designed to be installed at a cable operator’s headend facility or distribution hub and 
to function as the cable modem termination system (CMTS) for subscriber-end devices such as the 
Cisco uBR905 and Cisco uBR925 cable access routers, and other DOCSIS-compliant cable modems 
(CMs) and set-top boxes (STBs).

Cisco uBR7200 series universal broadband routers allow two-way transmission of digital data and Voice 
over IP (VoIP) traffic over a hybrid fiber-coaxial (HFC) network. The Cisco uBR7200 series routers 
support IP routing with a wide variety of protocols and combinations of Ethernet, Fast Ethernet, Gigabit 
Ethernet, serial, High-Speed Serial Interface (HSSI), Packet over SONET (POS) OC-3 and OC-12c, and 
Asynchronous Transfer Mode (ATM) media.

The Cisco uBR7246VXR offers an industry-proven CMTS and carrier-class router in a scalable platform 
with a high-performance network processing engine to support data, voice, and video services for 
medium to large network installations.

The Cisco uBR7246VXR provides the following major hardware features:

High-performance network processing engine

I/O controller

Up to two network interface port adapters