Cisco Cisco IOS Software Release 12.4(4)T

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The IP Service Level Agreements (SLAs) Real-Time Transport Protocol (RTP)-based Voice over IP 
(VoIP) Operation feature provides the capability to set up and schedule a test call and use Voice gateway 
digital signal processors (DSPs) to gather network performance-related statistics for the call. Available 
statistical measurements for VoIP networks include jitter, frame loss, Mean Opinion Score for 
Conversational Quality (MOS-CQ), and Mean Opinion Score for Listening Quality (MOS-LQ).

Your Cisco IOS software release may not support all of the features documented in this module. To reach 
links to specific feature documentation in this module and to see a list of the releases in which each feature is 
supported, use the 

.

Use Cisco Feature Navigator to find information about platform support and Cisco IOS software image 
support. Access Cisco Feature Navigator at 

. You must have an account on 

Cisco.com. If you do not have an account or have forgotten your username or password, click Cancel at 
the login dialog box and follow the instructions that appear.