Extract audio from PCAP
I've have some really large PCAPs sometimes and wireshark just dies trying to decode the audio in them. All the links for audio extraction on voipinfo seem really old. Is there something else to extract the audio from pcaps? Or some command to to pass tshark to just save all audio as a .wav file? What does voipmonitor use? I think I asked this before... Thanks, -Avi Marcus
On Sun, Mar 3, 2013 at 11:40 PM, Avi Marcus <avi@avimarcus.net> wrote:
I've have some really large PCAPs sometimes and wireshark just dies trying to decode the audio in them.
All the links for audio extraction on voipinfo seem really old.
Is there something else to extract the audio from pcaps? Or some command to to pass tshark to just save all audio as a .wav file?
What does voipmonitor use? I think I asked this before...
Thanks, -Avi Marcus
How big are the pcap files ? you could use editcap to split them up into more manageable chunks, and then use wireshark... http://www.wireshark.org/docs/man-pages/editcap.html I've not either but, youmight look at http://frox25.no-ip.org/~mtve/wiki/RtpExtract.html and http://www.netresec.com/?page=NetworkMiner Cheers Arne
I like that cool Perl script. I'll have to try that some time. In the meantime you can use tshark to extract the rtp and then use sox to turn them into wav files. I'm working on a script to do that automatically, but in the meantime this post should help: http://gteissier.wordpress.com/2010/03/02/tshark-the-swiss-army-knife-of-pac... -MC On Sun, Mar 3, 2013 at 4:40 PM, shouldbe q931 <shouldbeq931@gmail.com>wrote:
On Sun, Mar 3, 2013 at 11:40 PM, Avi Marcus <avi@avimarcus.net> wrote:
I've have some really large PCAPs sometimes and wireshark just dies trying to decode the audio in them.
All the links for audio extraction on voipinfo seem really old.
Is there something else to extract the audio from pcaps? Or some command to to pass tshark to just save all audio as a .wav file?
What does voipmonitor use? I think I asked this before...
Thanks, -Avi Marcus
How big are the pcap files ?
you could use editcap to split them up into more manageable chunks, and then use wireshark... http://www.wireshark.org/docs/man-pages/editcap.html
I've not either but, youmight look at
http://frox25.no-ip.org/~mtve/wiki/RtpExtract.html
and
http://www.netresec.com/?page=NetworkMiner
Cheers
Arne
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
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-- Michael S Collins Twitter: @mercutioviz http://www.FreeSWITCH.org http://www.ClueCon.com http://www.OSTAG.org
Wow, that's a complicated procedure. Identify the IP, then extract the rtp, then convert that to raw audio, then you need to know exactly what type of raw audio to open it. By the way, I tried processing a 230mb PCAP.. that last batch with the for loops sucked an entire core and I stopped it after like 15 mins. Payloads was 238mb and the sounds.raw only got up to 53mb before I stopped it.. I don't know how far it would have gotten. Michael, is there something faster? :) -Avi On Wed, Mar 6, 2013 at 9:45 PM, Michael Collins <msc@freeswitch.org> wrote:
I like that cool Perl script. I'll have to try that some time. In the meantime you can use tshark to extract the rtp and then use sox to turn them into wav files. I'm working on a script to do that automatically, but in the meantime this post should help:
http://gteissier.wordpress.com/2010/03/02/tshark-the-swiss-army-knife-of-pac...
-MC
On Sun, Mar 3, 2013 at 4:40 PM, shouldbe q931 <shouldbeq931@gmail.com>wrote:
On Sun, Mar 3, 2013 at 11:40 PM, Avi Marcus <avi@avimarcus.net> wrote:
I've have some really large PCAPs sometimes and wireshark just dies trying to decode the audio in them.
All the links for audio extraction on voipinfo seem really old.
Is there something else to extract the audio from pcaps? Or some command to to pass tshark to just save all audio as a .wav file?
What does voipmonitor use? I think I asked this before...
Thanks, -Avi Marcus
How big are the pcap files ?
you could use editcap to split them up into more manageable chunks, and then use wireshark... http://www.wireshark.org/docs/man-pages/editcap.html
I've not either but, youmight look at
http://frox25.no-ip.org/~mtve/wiki/RtpExtract.html
and
http://www.netresec.com/?page=NetworkMiner
Cheers
Arne
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
-- Michael S Collins Twitter: @mercutioviz http://www.FreeSWITCH.org http://www.ClueCon.com http://www.OSTAG.org
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
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On Wed, Mar 6, 2013 at 12:11 PM, Avi Marcus <avi@avimarcus.net> wrote:
Wow, that's a complicated procedure. Identify the IP, then extract the rtp, then convert that to raw audio, then you need to know exactly what type of raw audio to open it. By the way, I tried processing a 230mb PCAP.. that last batch with the for loops sucked an entire core and I stopped it after like 15 mins. Payloads was 238mb and the sounds.raw only got up to 53mb before I stopped it.. I don't know how far it would have gotten.
Michael, is there something faster? :) -Avi
Faster processor? :)
You need to assemble all of those packets, no way around it. I am working on a script to handle that but it's nowhere near ready for public consumption. Believe me, if you only need to get the RTP from a pcap then that procedure is not too difficult. (You could probably have done it in less time than it took to write that email. ;) I've wrapped that process into a script but I'm trying to handle all the other stuff like getting each stream extracted and then launching sox or the the new-and-improved fs_encode to convert from raw audio to wav file. I'll let everyone know when it is done and put it up on the wiki. -MC
On Wed, Mar 6, 2013 at 9:45 PM, Michael Collins <msc@freeswitch.org>wrote:
I like that cool Perl script. I'll have to try that some time. In the meantime you can use tshark to extract the rtp and then use sox to turn them into wav files. I'm working on a script to do that automatically, but in the meantime this post should help:
http://gteissier.wordpress.com/2010/03/02/tshark-the-swiss-army-knife-of-pac...
-MC
On Sun, Mar 3, 2013 at 4:40 PM, shouldbe q931 <shouldbeq931@gmail.com>wrote:
On Sun, Mar 3, 2013 at 11:40 PM, Avi Marcus <avi@avimarcus.net> wrote:
I've have some really large PCAPs sometimes and wireshark just dies trying to decode the audio in them.
All the links for audio extraction on voipinfo seem really old.
Is there something else to extract the audio from pcaps? Or some command to to pass tshark to just save all audio as a .wav file?
What does voipmonitor use? I think I asked this before...
Thanks, -Avi Marcus
How big are the pcap files ?
you could use editcap to split them up into more manageable chunks, and then use wireshark... http://www.wireshark.org/docs/man-pages/editcap.html
I've not either but, youmight look at
http://frox25.no-ip.org/~mtve/wiki/RtpExtract.html
and
http://www.netresec.com/?page=NetworkMiner
Cheers
Arne
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
-- Michael S Collins Twitter: @mercutioviz http://www.FreeSWITCH.org http://www.ClueCon.com http://www.OSTAG.org
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
-- Michael S Collins Twitter: @mercutioviz http://www.FreeSWITCH.org http://www.ClueCon.com http://www.OSTAG.org
Is an i7 desktop fast enough? the RTP extraction was quick (IO bound, likely) That second step to convert to .raw... not quick at all. -Avi core #0: avi@avi-i7 ~ $ cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 42 model name : Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz stepping : 7 cpu MHz : 3401.000 cache size : 8192 KB physical id : 0 siblings : 8 core id : 0 cpu cores : 4 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt aes xsave avx lahf_lm ida arat epb xsaveopt pln pts dts tpr_shadow vnmi flexpriority ept vpid bogomips : 6823.99 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: On Wed, Mar 6, 2013 at 11:18 PM, Michael Collins <msc@freeswitch.org> wrote:
On Wed, Mar 6, 2013 at 12:11 PM, Avi Marcus <avi@avimarcus.net> wrote:
Wow, that's a complicated procedure. Identify the IP, then extract the rtp, then convert that to raw audio, then you need to know exactly what type of raw audio to open it. By the way, I tried processing a 230mb PCAP.. that last batch with the for loops sucked an entire core and I stopped it after like 15 mins. Payloads was 238mb and the sounds.raw only got up to 53mb before I stopped it.. I don't know how far it would have gotten.
Michael, is there something faster? :) -Avi
Faster processor? :)
You need to assemble all of those packets, no way around it. I am working on a script to handle that but it's nowhere near ready for public consumption. Believe me, if you only need to get the RTP from a pcap then that procedure is not too difficult. (You could probably have done it in less time than it took to write that email. ;)
I've wrapped that process into a script but I'm trying to handle all the other stuff like getting each stream extracted and then launching sox or the the new-and-improved fs_encode to convert from raw audio to wav file. I'll let everyone know when it is done and put it up on the wiki.
-MC
On Wed, Mar 6, 2013 at 9:45 PM, Michael Collins <msc@freeswitch.org>wrote:
I like that cool Perl script. I'll have to try that some time. In the meantime you can use tshark to extract the rtp and then use sox to turn them into wav files. I'm working on a script to do that automatically, but in the meantime this post should help:
http://gteissier.wordpress.com/2010/03/02/tshark-the-swiss-army-knife-of-pac...
-MC
On Sun, Mar 3, 2013 at 4:40 PM, shouldbe q931 <shouldbeq931@gmail.com>wrote:
On Sun, Mar 3, 2013 at 11:40 PM, Avi Marcus <avi@avimarcus.net> wrote:
I've have some really large PCAPs sometimes and wireshark just dies trying to decode the audio in them.
All the links for audio extraction on voipinfo seem really old.
Is there something else to extract the audio from pcaps? Or some command to to pass tshark to just save all audio as a .wav file?
What does voipmonitor use? I think I asked this before...
Thanks, -Avi Marcus
How big are the pcap files ?
you could use editcap to split them up into more manageable chunks, and then use wireshark... http://www.wireshark.org/docs/man-pages/editcap.html
I've not either but, youmight look at
http://frox25.no-ip.org/~mtve/wiki/RtpExtract.html
and
http://www.netresec.com/?page=NetworkMiner
Cheers
Arne
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE: http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
-- Michael S Collins Twitter: @mercutioviz http://www.FreeSWITCH.org http://www.ClueCon.com http://www.OSTAG.org
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
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-- Michael S Collins Twitter: @mercutioviz http://www.FreeSWITCH.org http://www.ClueCon.com http://www.OSTAG.org
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
I have been looking at the man page for tshark, and I don't see any reference to audio at all -- what am I missing here? Michael Collins <msc@freeswitch.org> wrote:
I like that cool Perl script. I'll have to try that some time. In the meantime you can use tshark to extract the rtp and then use sox to turn them into wav files. I'm working on a script to do that automatically, but in the meantime this post should help:
http://gteissier.wordpress.com/2010/03/02/tshark-the-swiss-army-knife-of-pac...
-MC
On Sun, Mar 3, 2013 at 4:40 PM, shouldbe q931 <shouldbeq931@gmail.com>wrote:
On Sun, Mar 3, 2013 at 11:40 PM, Avi Marcus <avi@avimarcus.net> wrote:
I've have some really large PCAPs sometimes and wireshark just dies trying to decode the audio in them.
All the links for audio extraction on voipinfo seem really old.
Is there something else to extract the audio from pcaps? Or some command to to pass tshark to just save all audio as a .wav file?
What does voipmonitor use? I think I asked this before...
Thanks, -Avi Marcus
How big are the pcap files ?
you could use editcap to split them up into more manageable chunks, and then use wireshark... http://www.wireshark.org/docs/man-pages/editcap.html
I've not either but, youmight look at
http://frox25.no-ip.org/~mtve/wiki/RtpExtract.html
and
http://www.netresec.com/?page=NetworkMiner
Cheers
Arne
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
-- Michael S Collins Twitter: @mercutioviz http://www.FreeSWITCH.org http://www.ClueCon.com http://www.OSTAG.org
---------------------------------------------------- Alternatives:
---------------------------------------------------- _________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
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-- Your life is like a penny. You're going to lose it. The question is: How do you spend it? John Covici covici@ccs.covici.com
On Wed, Mar 6, 2013 at 8:14 PM, <covici@ccs.covici.com> wrote:
I have been looking at the man page for tshark, and I don't see any reference to audio at all -- what am I missing here?
not audio, just rtp packets... I am presuming that the pcap contains multiple "streams", so why not use a display filter to isolate and save each stream you are interested in, then open up each saved stream and use wireshark to extract the audio. granted if each pcap is ~200mb and only contains a single stream, it's a different problem cheers Arne
Yeah, it's a single 1:45:00 call and I want to know why it was so long... -Avi On Wed, Mar 6, 2013 at 10:37 PM, shouldbe q931 <shouldbeq931@gmail.com>wrote:
On Wed, Mar 6, 2013 at 8:14 PM, <covici@ccs.covici.com> wrote:
I have been looking at the man page for tshark, and I don't see any reference to audio at all -- what am I missing here?
not audio, just rtp packets...
I am presuming that the pcap contains multiple "streams", so why not use a display filter to isolate and save each stream you are interested in, then open up each saved stream and use wireshark to extract the audio.
granted if each pcap is ~200mb and only contains a single stream, it's a different problem
cheers
Arne
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
On Wed, Mar 6, 2013 at 8:48 PM, Avi Marcus <avi@avimarcus.net> wrote:
Yeah, it's a single 1:45:00 call and I want to know why it was so long... -Avi
cor, that a long call... some more searching has turned up this http://www.xplico.org/about
On 06/03/13 20:37, shouldbe q931 wrote:
I am presuming that the pcap contains multiple "streams", so why not use a display filter to isolate and save each stream you are interested in,
I believe that pcapsipdump can do this as well - take a pcap and create per-call pcaps from it (SIP+RTP). Regards.
Paul, yes, pcapsipdump is great. But now I want a .wav file out of that call, and wireshark crashes on certain files when trying to decode it... hence the question of other ways to extract it. -Avi On Wed, Mar 6, 2013 at 11:08 PM, Paul Cupis <paul@cupis.co.uk> wrote:
On 06/03/13 20:37, shouldbe q931 wrote:
I am presuming that the pcap contains multiple "streams", so why not use a display filter to isolate and save each stream you are interested in,
I believe that pcapsipdump can do this as well - take a pcap and create per-call pcaps from it (SIP+RTP).
Regards.
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
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Once you get the raw file out of the pcap do this: sox -t ul -r 8000 -c 1 file.raw file.wav That's assuming it's ulaw. Change "ul" to "al" if it's Alaw. If it's some other codec then you'll need to figure out how to convert the raw to wav. (That's where anthm's improvement of fs_encode is really handy.) -MC On Wed, Mar 6, 2013 at 1:16 PM, Avi Marcus <avi@avimarcus.net> wrote:
Paul, yes, pcapsipdump is great. But now I want a .wav file out of that call, and wireshark crashes on certain files when trying to decode it... hence the question of other ways to extract it.
-Avi
On Wed, Mar 6, 2013 at 11:08 PM, Paul Cupis <paul@cupis.co.uk> wrote:
On 06/03/13 20:37, shouldbe q931 wrote:
I am presuming that the pcap contains multiple "streams", so why not use a display filter to isolate and save each stream you are interested in,
I believe that pcapsipdump can do this as well - take a pcap and create per-call pcaps from it (SIP+RTP).
Regards.
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
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_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
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participants (5)
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Avi Marcus
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covici＠ccs.covici.com
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Michael Collins
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Paul Cupis
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shouldbe q931