Hi,
I know that there are licence and patent issues but is it possible to decode g729 encoded rtp streams with any software ? I have licenced Eybeam softphone with g729 support. But it can only decode streams in a conversation. I just need to decode streams recorded with tcpdump/ethereal.
Once I had used a software with this feature but then it turned out to be a trojan. I don't remember the name now. Is there any other software ? (or method using Eyebeam ?)
Thanks, ilker
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Hello,
On Friday 21 July 2006 08:31, İlker Aktuna wrote:
I know that there are licence and patent issues but is it possible to decode g729 encoded rtp streams with any software ? I have licenced Eybeam softphone with g729 support. But it can only decode streams in a conversation. I just need to decode streams recorded with tcpdump/ethereal.
Once I had used a software with this feature but then it turned out to be a trojan. I don't remember the name now. Is there any other software ? (or method using Eyebeam ?)
AFAIK you have to pay the license per stream in parallel. Thus I guess any kind of sniffer would have to pay a very high license fee because you could theoretically decode a lot of streams in parallel with it.
Greetings Nils
Nils Ohlmeier wrote:
Hello,
On Friday 21 July 2006 08:31, İlker Aktuna wrote:
I know that there are licence and patent issues but is it possible to decode g729 encoded rtp streams with any software ? I have licenced Eybeam softphone with g729 support. But it can only decode streams in a conversation. I just need to decode streams recorded with tcpdump/ethereal.
Once I had used a software with this feature but then it turned out to be a trojan. I don't remember the name now. Is there any other software ? (or method using Eyebeam ?)
I once did it with Asterisk. I used some RTP capturing and transmitting software from columbia university. I made a call with G729 and captured. Then I made a call to a G.729 (free G729) enabled asterisk with a softphone. then i killed the softphone and used the other software to stream the RTP data to Asterisk's RTP port. not very comfortable but it worked
regards klaus
İlker Aktuna (Koç.net) wrote:
Hi,
I know that there are licence and patent issues but is it possible to decode g729 encoded rtp streams with any software ? I have licenced Eybeam softphone with g729 support. But it can only decode streams in a conversation. I just need to decode streams recorded with tcpdump/ethereal.
Once I had used a software with this feature but then it turned out to be a trojan. I don't remember the name now. Is there any other software ? (or method using Eyebeam ?)
Thanks, ilker
You can download the decoder from: http://www.voiceage.com/openinit_g729.php
Then capture the RTP Stream with Ethereal and export the Payload (using rtpdump from http://www.cs.columbia.edu/IRT/software/rtptools/).
You can then decode it with the above software.
http://387555.sigclick.mailinfo.com/sigclick/02090E04/01044900/02090D4D/0611191415.jpg _____________________________________________________________________________________________________________________________________________ Bu e-posta mesaji kisiye ozel olup, gizli bilgiler iceriyor olabilir. Eger bu e-posta mesaji size yanlislikla ulasmissa, icerigini hic bir sekilde kullanmayiniz ve ekli dosyalari acmayiniz. Bu durumda lutfen e-posta mesajini kullaniciya hemen geri gonderiniz ve tum kopyalarini mesaj kutunuzdan siliniz. Bu e-posta mesaji, hic bir sekilde, herhangi bir amac icin cogaltilamaz, yayinlanamaz ve para karsiligi satilamaz. Bu e-posta mesaji viruslere karsi anti-virus sistemleri tarafindan taranmistir. Ancak yollayici, bu e-posta mesajinin - virus koruma sistemleri ile kontrol ediliyor olsa bile - virus icermedigini garanti etmez ve meydana gelebilecek zararlardan dogacak hicbir sorumlulugu kabul etmez. This message is intended solely for the use of the individual or entity to whom it is addressed , and may contain confidential information. If you are not the intended recipient of this message or you receive this mail in error, you should refrain from making any use of the contents and from opening any attachment. In that case, please notify the sender immediately and return the message to the sender, then, delete and destroy all copies. This e-mail message, can not be copied, published or sold for any reason. This e-mail message has been swept by anti-virus systems for the presence of computer viruses. In doing so, however, sender cannot warrant that virus or other forms of data corruption may not be present and do not take any responsibility in any occurrence. _____________________________________________________________________________________________________________________________________________
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Andres -
İlker Aktuna (Koç.net) -
Klaus Darilion -
Nils Ohlmeier