Show commands are used for various purposes such as management, configuration verification and viewing statistics of various protocols and processes in Cisco IOS.

Cisco Debug Commands are used for troubleshooting purposes. They display information about various router processes and operations. Using Debug commands information about traffic generated and received by the Router can also be viewed. Cisco treats the Debug process as high-priority and it can consume significant amount of router resources thus extensive debugging in production networks is not encouraged. Debug tools are not recommended to be used for monitoring purposes instead debugging must only be used temporarily for troubleshooting and should be turned off as soon as the issues are identified. In this session I provide you debug and show command which are useful for one way/No way audio .

Warnings

Use debug commands with caution. In general, it is recommended that these commands only be used under the direction of your router technical support representative when troubleshooting specific problems. 

Enabling debugging can disrupt operation of the router when internetworks are experiencing high load conditions. Hence, if logging is enabled, the access server can intermittently freeze as soon as the console port gets overloaded with log messages. 

Before you start a debug command, always consider the output that this command will generate and the amount of time this can take.

Platform

Commands mentioned below will be useful for ISR4K hardware

Product Type

The product type is Cisco CUBE Enterprise

Problem Scope

The problem scope will be H323-SIP

Problem Type

The problem is one way/Noway audio

Software Version

This applies to all software version

Useful commands

Show version. To display information about the currently loaded software along with hardware and device information

Show run. To display the contents of the current running configuration file

Show gateway. To display the current status of the gateway, use the show gateway command in privileged EXEC mode.


show sip-ua register status. To display the status of E.164 numbers that a Session Initiation Protocol (SIP) gateway has registered with an external primary SIP registrar, use the show sip-ua register status command in privileged EXEC mode.


show call active voice brief <callId|duration>. The show call active voice command allows you to display the contents of the active call table. The information presented includes call times, dial peers, connections, quality of service parameters, and gateway handling of jitter. This information can be useful when you troubleshoot a range of voice quality problems.

show call history voice brief <callId|calling-number|called-number|duration>. To display the call history table for voice calls, use the show call history voice command in user EXEC or privileged EXEC mode.

show sip-ua calls <summary|callId|calling-number|called-number|brief>. To display active user agent client (UAC) and user agent server (UAS) information on Session Initiation Protocol (SIP) calls, use the show sip-ua calls command in privileged EXEC mode

show voip fpi calls. To display call information for TDM and IVR calls in the Forwarding Plane Interface (FPI), use the show voip fpicalls command in privileged EXEC mode.


show platform software sbc rp active tables | sec sbc_calls

show platform software sbc fp active tables | sec sbc_calls

show platform hardware qfp active feature sbc datapath lvl2-hash-table basic. Specifies SBC datapath SIP Fast Register (SFX).



Basic Debugs

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debug voip ipipgw.To turn on debugging for the Cisco Multiservice IP-to-IP Gateway (IPIPGW), use the debug voip ipipgwcommand in privileged EXEC mode. To disable debugging output, use the no form of this command.

debug voip ccapi inout. The debug voip ccapi inout command traces the execution path through the call control API, which serves as the interface between the call session application and the underlying network-specific software. You can use the output from this command to understand how calls are being handled by the voice gateway. 
This command shows how a call flows through the system. Using this debug level, you can see the call setup and teardown operations performed on both the telephony and network call legs.

debug h225 q931

debug h225 asn1. To display ASN1 contents of RAS and Q.931 messages, use the debug h255 asn1 privileged EXEC command. The no form of this command disables debugging output.

debug h245 asn1

debug h225 events. To display Q.931 events, use the debug h225 events privileged EXEC command. The no form of this command disables debugging output.

debug h245 events.To display H.245 events, use the debug h245 events command in privileged EXEC mode. To disable debugging output, use the no form of this command.

debug ccsip message. Enables all SIP SPI message tracing, such as those that are exchanged between the SIP user-agent client (UAC) and the access server

debug ccsip events.Enables tracing of all SIP SPI events

debug ccsip info.Enables tracing of general SIP SPI information, including verification that call redirection is disabled



Advanced Debugs

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debug voip fpi all

set platform software trace forwarding-manager rp active sbc debug.To modify the trace level to increase or decrease the amount of trace message output,The Forwarding Manager process.The active route processor.

set platform software trace forwarding-manager fp active sbc debug. To modify the trace level to increase or decrease the amount of trace message output,The Forwarding Manager process.
The active Embedded-Service-Processor. 

debug platform hardware qfp active feature sbc dbe client debug.Enables SBC DBE client debugging.

debug platform hardware qfp active feature sbc dbe datapath debug.Enables SBC DBE datapath debugging.



debug ccsip all. Enable all SIP debugging traces

debug ip tcp transaction. The debug ip tcp transactions command displays output for packets that the router sends and receives, but does not display output for packets that it forwards.



debug cch323 h225.When used with the debugcch323 command, the h225 keyword allows you to trace the state transition of the H.225 state machine on the basis of the processed event.

debug cch323 h245.When used with the debugcch323 command, the h245 keyword allows you to trace the state transition of the H.245 state machine on the basis of the processed event.

debug cch323 session. Traces general H.323 events and can be used to troubleshoot H.323 problems.

         (or)

debug cch323 all.use the debug cch323 all command to enable all H.323 debugging capabilities