[asterisk-users] dtmf_2833_1.pcap: what PCM codec? ulaw or alaw?

cajsdy cajsdy at gmail.com
Wed Mar 30 20:02:49 CDT 2011


thanks. opened with wireshark and it's clearly show the format, digits.

another question: each pcap has multiple frames, each frame has digit,
volume 10, and duration. why it has more than one frame? would not it send
multiple digit each pcap?

On Wed, Mar 30, 2011 at 5:47 PM, Kevin P. Fleming <kpfleming at digium.com>wrote:

> On 03/30/2011 10:46 AM, cajsdy wrote:
>
>> Hi everybody,
>> got it from svn:
>>
>>
>> dtmf_2833_1.pcap
>>
>> //asterisk/trunk/tests/rfc2833_dtmf_detect/configs/extensions.conf
>> PRE-CREATION
>> />/    /asterisk/trunk/tests/rfc2833_dtmf_detect/configs/sip.conf
>> PRE-CREATION
>>
>> />/    /asterisk/trunk/tests/rfc2833_dtmf_detect/run-test PRE-CREATION
>> />/    /asterisk/trunk/tests/rfc2833_dtmf_detect/sipp/broken_dtmf.pcap
>> UNKNOWN
>> />/    /asterisk/trunk/tests/rfc2833_dtmf_detect/sipp/broken_dtmf.xml
>> PRE-CREATION
>>
>> />/    /asterisk/trunk/tests/rfc2833_dtmf_detect/sipp/dtmf_2833_1.pcap
>> UNKNOWN
>> />/
>>  /asterisk/trunk/tests/rfc2833_dtmf_detect/sipp/dtmf_2833_1_noend.pcap
>> UNKNOWN
>> />/    /asterisk/trunk/tests/rfc2833_dtmf_detect/sipp/dtmf_2833_2.pcap
>> UNKNOWN
>>
>> />/
>>  /asterisk/trunk/tests/rfc2833_dtmf_detect/sipp/dtmf_2833_2_noend.pcap
>> UNKNOWN
>> />/    /asterisk/trunk/tests/rfc2833_dtmf_detect/sipp/dtmf_2833_3.pcap
>> UNKNOWN
>> />/
>>  /asterisk/trunk/tests/rfc2833_dtmf_detect/sipp/dtmf_2833_3_noend.pcap
>> UNKNOWN
>>
>> />/    /asterisk/trunk/tests/rfc2833_dtmf_detect/sipp/dtmf_2833_4.pcap
>> UNKNOWN
>> />/
>>  /asterisk/trunk/tests/rfc2833_dtmf_detect/sipp/dtmf_2833_4_noend.pcap
>> UNKNOWN
>> />/    /asterisk/trunk/tests/rfc2833_dtmf_detect/sipp/dtmf_2833_5.pcap
>> UNKNOWN
>>
>> />/    /asterisk/trunk/tests/rfc2833_dtmf_detect/sipp/dtmf_2833_6.pcap
>> UNKNOWN
>> />/    /asterisk/trunk/tests/rfc2833_dtmf_detect/sipp/dtmf_2833_7.pcap
>> UNKNOWN
>> />/    /asterisk/trunk/tests/rfc2833_dtmf_detect/sipp/dtmf_2833_8.pcap
>> UNKNOWN
>>
>> />/    /asterisk/trunk/tests/rfc2833_dtmf_detect/sipp/dtmf_2833_9.pcap
>> UNKNOWN
>> />/    /asterisk/trunk/tests/rfc2833_dtmf_detect/sipp/dtmf_2833_pound.pcap
>> UNKNOWN
>> />/    /asterisk/trunk/tests/rfc2833_dtmf_detect/sipp/dtmf_2833_star.pcap
>> UNKNOWN
>>
>> />/    /asterisk/trunk/tests/rfc2833_dtmf_detect/sipp/dtmf_baseline.xml
>> PRE-CREATION
>> />/    /asterisk/trunk/tests/rfc2833_dtmf_detect/sipp/dtmf_noend.xml
>> PRE-CREATION
>> />/    /asterisk/trunk/tests/rfc2833_dtmf_detect/sipp/register.xml
>> PRE-CREATION
>>
>> />/    /asterisk/trunk/tests/rfc2833_dtmf_detect/test-config.yaml
>> PRE-CREATION
>> />/    /asterisk/trunk/tests/rfc2833_dtmf_detect/test.lua PRE-CREATION
>> /
>>
>>
>>
>> wonder what's the PCM coding format within these captures? ulaw or alaw?
>> I'm looking for alaw captures.
>>
>
> Since they are packet captures of RTP frames, the RTP payload numbers in
> the frames will indicate what format they contain. Have you opened the files
> with Wireshark or any other tool that can interpret PCAP files?
>
> --
> Kevin P. Fleming
> Digium, Inc. | Director of Software Technologies
> Jabber: kfleming at digium.com | SIP: kpfleming at digium.com | Skype: kpfleming
> 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
> Check us out at www.digium.com & www.asterisk.org
>
> --
> _____________________________________________________________________
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
> New to Asterisk? Join us for a live introductory webinar every Thurs:
>              http://www.asterisk.org/hello
>
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>  http://lists.digium.com/mailman/listinfo/asterisk-users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20110330/b112806a/attachment-0001.htm>


More information about the asterisk-users mailing list