Capture Packets - Cisco 8851 Administration Manual

Before You Begin
Make sure that SIP Transport parameter of the extension is set to TLS.
Procedure
Step 1 In the phone web page, select Admin Login > Advanced > Voice > Ext(n).
Step 2 In the Call Feature Settings section, in the Secure Call Option field, choose Optional to retain the current
secure call option for the phone, or Required to reject nonsecure calls from other phones.
Step 3 Click Submit All Changes.

Capture Packets

Procedure
Step 1 On the phone web page, select Admin Login > Advanced > Info > Debug Info.
Step 2 In the Problem Report Tool section, click the Start Packet Capture button in the Packet Capture field.
Step 3 Choose Al to capture all packets that the phone receives and select Host IP Address to capture packets only
when source or destination is the IP address of the phone.
Step 4 Make phone calls to and from the selected phone.
Step 5 When you want to stop the packet capture, click Stop Packet Capture.
Step 6 Click Submit.
You see a file in the Capture File field. This file contains the filtered packets.
Cisco IP Phone 8800 Series Multiplatform Phones Administration Guide
Capture Packets
187