[asterisk-users] how to check if the call is using t38 except in the sip packets

[Larry Moore]

On 4/04/2011 10:27 PM, Israel Gottlieb wrote:
> How could i check if the call is using t38 except looking at the sip 
> debug?
>
My suggestion is to capture the packets between the two end points using 
tcpdump, in your case you would be captuing SIP & RTP packtes between 
your SPA8000 & your ITSP. I would suggest you ensure you use a snaplen 
in tcpdump that is large enough to capture all the packet information.

Once you have the captured data you will find Wireshark is your friend, 
open the file in Wireshark and then select "VoIP Calls" which is located 
under the Telephony menu item.

Once it has gathered the information it wants you will be able to select 
one ore more sessions, once selected click on the Flow button, all will 
now be clear!


Larry.