Cisco Cisco IOS Software Release 12.2(15)CX

Up to four cable interface line cards

Up to two removable power supplies providing load-sharing and redundancy capabilities

Two Personal Computer Memory Card International Association (PCMCIA) slots that allow for 
software upgrades through the use of Flash memory cards

The Cisco uBR7246VXR chassis does not support the MC11-FPGA cable interface line card.

The Cisco uBR7246 offers an industry-proven CMTS and carrier-class router in a scalable platform to 
support data, voice, and video services for medium to large network installations.

The Cisco uBR7246 provides the following major hardware features:

Network processing engine

I/O controller

Up to two network interface port adapters

Up to four cable interface line cards

Up to two removable power supplies providing load-sharing and redundancy capabilities

Two PCMCIA slots that allow for software upgrades through the use of Flash memory cards

The Cisco uBR7223 is a cost-effective, scalable interface between subscriber cable modems and the 
backbone data network, and is designed specifically for small to medium network installations.

The Cisco uBR7223 provides the following major hardware features:

Network processing engine

I/O controller

One network interface port adapter

Up to two cable interface line cards

One removable power supply (The Cisco uBR7223 does not feature load-sharing and redundant 
power supply capability like the Cisco uBR7246VXR and Cisco uBR7246.)

Two PCMCIA slots that allow for software upgrades through the use of Flash memory cards