Cisco ASA Series Cli Configuration Manual page 1230

Troubleshooting the Phone Proxy
Table 1-6 Security Appliance Show Commands to Use with the Phone Proxy
To
To show the logs in the buffer and logging
settings.
To show the corresponding media
sessions stored by the phone proxy.
To show the IP phones capable of Secure
mode stored in the database.
To show the corresponding signaling
sessions stored by the phone proxy.
To show the configured service policies.
To show active TLS proxy sessions
related to the phone proxy.
Debugging Information from IP Phones
On the IP phone, perform the following actions:
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Use the Command
show logging
show phone-proxy media-sessions
show phone-proxy secure-phones
show phone-proxy
signaling-sessions
show service-policy
show tls-proxy sessions
Check the Status messages on the IP phone by selecting the Settings button > Status > Status
Messages and selecting the status item that you want to view.
Collect the call-statistics data from the IP phone by selecting the Settings button > Status > Call
Statistic. Data like the following displays:
RxType: G.729
RxSize: 20 ms
RxCnt: 0
AvgJtr: 10
RxDisc: 0000
Chapter 1
Notes
Before entering the show logging
command, enable the logging buffered
command so that the show logging
command displays the current message
buffer and the current settings.
Use this command to determine if the
phone proxy and IP phones are
successfully completing the TLS
handshake.
Note
Use this command to display output from
successful calls. Additionally, use this
command to troubleshoot problems with
IP phone audio, such as one-way audio.
For any problems, make sure there is an
entry for the IP phone in this output and
that the port for this IP phone is non-zero,
which indicates that it has successfully
registered with the Cisco UCM.
Use this command to troubleshoot media
or signaling failure.
Use this command to show statistics for
the service policy.
If the IP phone has failed to register, use
this command to see if the IP phone has
successfully completed the handshake
with the TLS proxy configured for the
phone proxy.
TxType: G.729
TxSize: 20 ms
TxCnt: 014174
MaxJtr: 59
RxLost: 014001
Configuring the Cisco Phone Proxy
Using the show logging
command is useful for
troubleshooting many problems
where packets might be denied or
there are translation failures.