Cisco Cisco IOS Software Release 12.2(2)XB

The Cisco IGX 8400 series platforms function as components of Cisco’s end-to-end voice architecture. 
The Cisco IOS software runs only on the URM; all other components of the Cisco IGX 8400 series platform 
run Switched Software (SWSW).

The URM is a Cisco IOS-based IP router blade that enables users to provision Voice over IP (VoIP) and 
Voice over ATM (VoATM) on a Cisco IGX 8400 series platform. The voice and routing capabilities of 
the URM have been derived from the Cisco 3660 series routers, while the ATM capabilities of the URM 
have been derived from the existing enhanced Universal Switching Module (UXM-E) that is used on a 
Cisco IGX 8400 series platform.

In addition to VoIP and VoATM, IP routing and Cisco IOS command language interface (CLI) 
commands—which allow configuration of the voice ports and dial peers—are now available on the 
Cisco IGX 8400 series platforms.

The URM interoperates with all Cisco IOS-based voice products and supports 30 voice channels with 
high-complexity codec types and 60 voice channels with medium-complexity codec types. Note that 
only digital voice ports are supported on the URM; analog ports are not supported.

The Universal Router Module (URM) is an optional module for the Cisco IGX 8400 series and delivers 
high-density voice interfaces, Fast Ethernet connectivity and ATM switching. For further information 
about URM, refer to the 

.

For information on new features and Cisco IOS commands supported by Cisco IOS 
Release 12.2(2) XB15, see the 

This section describes the system requirements for Cisco IOS Release 12.2(2) XB15 and includes the 
following sections: