Hi David I would suggest you search for needed pcaps at www.pcapr.net
Regards, Evgeny Miloslavsky Systest Engineer Juniper Networks Solutions Israel LTD. Office: 972-9-9712355 Office: 972-74-7170072 ________________________________ From: Resnick David [mailto:david.resn...@comverse.com] Sent: Monday, May 03, 2010 6:31 PM To: sipp-users@lists.sourceforge.net Subject: [Sipp-users] Problem preparing files for pcap_play I've been trying to prepare files for other codecs to use with pcap_play and am having difficulties. I save a file (for example, PCMU) using this command inside the sipp script: <nop> <action> <exec command="/usr/sbin/tcpdump -T rtp -i any -s 0 -w [logdir]/tcpdump.pcap dst port 49120" /> </action> </nop> A file is produced, but doesn't play back nicely. I note that when I examine the provided g711a.pcap file with wireshark, it shows packets as UDP 1 0.000000 10.1.3.143 10.1.6.18 294 UDP Source port: commplex-main Destination port: raid-cd If I ask wireshark to decode the reference g711a.pcap file as RTP, it looks good: 1 0.000000 10.1.3.143 10.1.6.18 294 RTP PT=ITU-T G.711 PCMA, SSRC=0xDEE0EE8F, Seq=59133, Time=240, Mark The dump I make of mulaw it looks like this in wireshark. 214 bytes size instead of 294. There is an entry every 20 millseconds, so it is the RTP. 2 0.225408 ff.fe.fe ff.7d.fe 214 FC Unknown frame If I ask wireshark to decode as UDP, it remains the same (as in it can't decode as UDP usefully). Any thoughts on what I'm doing wrong? tcpdump options wrong perhaps? Thanks! ________________________________ "This e-mail message may contain confidential, commercial or privileged information that constitutes proprietary information of Comverse Technology or its subsidiaries. If you are not the intended recipient of this message, you are hereby notified that any review, use or distribution of this information is absolutely prohibited and we request that you delete all copies and contact us by e-mailing to: secur...@comverse.com. Thank You."
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