Sjur Usken

Views on new technologies and business opportunities from Sjur Usken

Category Archives: VoIP

Finally, wide-band sound will benefit VoIP


Have you ever heard “ohh, VoIP, isn’t that bad sound quality?” Personally I’m quite tired of it and VoIP is now ready for the larger market!

Polycom 7000The good news is all the new products with extremely good sound! Polycom has released their Polycom 6000 and 7000 (BTW, why do the need so many digits in their product name…) Once you have started using these, you really don’t want to go back. These solutions will help accelerate the VoIP convergence.

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Tools to test your SIP systems


My favorite place to have a look at now and then to check for new tools.

Personally I’ve used Cain&Abel a lot, it is easy for demonstration, both when doing password hacking (MD5 digest brute force attack) or listening in on voice calls. It’s easy way of doing it, combined with the possibility of doing Man in the Middle attack with ARP poisoning.

SIPvicious is more cumbersome to use, but fun against bad configured Asterisk servers. You list all the phone lines and which has no passwords.. (ooh.. did you forget to add a password on that test line… )

And now to the commercials….

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