Table Of Contents

Guide to Cisco IOS Voice Troubleshooting and Monitoring Features

Cisco IOS Release 12.4(4)T

Cisco IOS Release 12.3(8)T

Cisco IOS Release 12.3(4)T

Cisco IOS Release 12.2(11)T

Guide to Cisco IOS Voice Troubleshooting and Monitoring Features

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This chapter contains information about Cisco IOS voice troubleshooting and monitoring features and includes the location of the information in this document or other documents. Use Cisco Feature Navigator to see the features a Cisco IOS software release supports by platform, and to find the image that is best for you. Access Cisco Feature Navigator at http://www.cisco.com/go/fn.

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Note To use Cisco Feature Navigator, 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.

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New Cisco IOS voice troubleshooting and monitoring features are introduced in the following Cisco IOS software releases:

•Cisco IOS Release 12.4(4)T

•Cisco IOS Release 12.3(8)T

•Cisco IOS Release 12.3(4)T

•Cisco IOS Release 12.2(11)T

Cisco IOS Release 12.4(4)T

Feature	Description	Location
MGCP Call Centric Debug	Enables the filtering of MGCP debug output based on selected criteria and standardizes the format of the MGCP debug header. All MGCP debug output for a single call can be identified and correlated across the various layers in IOS software. Filtering debug output reduces extraneous information, making it easier to locate the correct information and reducing the impact to platform performance.	"MGCP Call Centric Debug" section
Test Call	Provides the ability for a remote station or gateway to establish a call to any destination address from a Test Call station located at a network operations center and to audibly verify the voice path.	"Using the Test Call Feature to Verify Voice Path" section
Voice Call Debug Filtering on H.323 Gatekeepers	Enables selected debugging traces for voice calls. This feature allows you to filter and trace voice call debug messages based on selected filtering criteria, reducing the volume of output for more efficient troubleshooting.	"Voice Call Debug Filtering on H.323 Gatekeepers" section

Cisco IOS Release 12.3(8)T

Feature	Description	Location
Voice Troubleshooting Enhancements	Adds standardized voice debug header and voice call debug filtering capabilities to additional and replacement debug commands, enables command profile debugging, and provides data dump for internal data structures.	"Debug Command Output on Cisco IOS Voice Gateways" section

Cisco IOS Release 12.3(4)T

Feature	Description	Location
Accounting Server Connectivity Failure and Recovery Detection	Provides the option to reject new calls entering the VoIP network and tear down all existing calls upon detecting connectivity failure to the method list that is associated with RADIUS-based accounting servers.	"Accounting Server Connectivity Failure and Recovery Detection" section
Inactive Call Detection	Enhances Cisco IOS behavior for disconnecting a call when an inactive condition is detected. This feature provides more control for managing these calls.	"Media Inactive Call Detection" section
SIP Debug Output Filtering Support	Provides the capability for SIP-related debug output to be filtered based on a set of user-defined matching conditions.	"SIP Debug Output Filtering Support" section
Voice DSP Crash Dump Analysis	Allows Cisco IOS voice platforms using TI DSPs the ability to capture the contents of the DSP memory into a dump file if there is a DSP crash.	"Voice DSP Crash Dump File Analysis" section
Voice Performance Statistics on Cisco Gateways	Enables the collection of voice call statistics based on user-configured time ranges. The statistics that can be collected are from the following functional areas: •RADIUS accounting •Cisco IOS generated internal error codes (IECs) •Gateway port (interface) statistics	"Voice Performance Statistics on Cisco Gateways" section
VoIP Debug Filtering on Cisco Voice Gateways	Allows you to filter and trace voice call debug messages based on selected filtering criteria, reducing the volume of output for more efficient troubleshooting.	"Voice Call Debug Filtering on Cisco Voice Gateways" section
VoIP Internal Error Codes	Generates IECs for gateway-detected errors that cause the gateway to release or refuse a call. IECs enhance troubleshooting for VoIP networks by helping to determine the source and reason for call termination.	"Cisco VoIP Internal Error Codes" section

Cisco IOS Release 12.2(11)T

Feature	Description	Location
Enhanced Debug Capabilities for Cisco Voice Gateways	Enables you to identify and track a specific call in a multiple-call environment.	"Debug Command Output on Cisco IOS Voice Gateways" section