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Archive for December, 2009

New Years Greetings for 2010

Posted by Zeeek/Randulo in VoIP

Podcast: Download

Audio : Download file (TS-302448.mp3)

vuc300-2

Congrats to Alex Robar, winner of the Polycom IP 335 from e4Strategies

We’ll be live on Jan 1, 2010 and you’ll hear the greetings sent to us from all over the world.

Thanks to everyone who participated from all over the world representing not one, but two species!

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Kamailio, Open SER

Posted by Zeeek/Randulo in Books, VoIP

Podcast: Download

Main event, Alex Balashov on Kamailio:

Audio : Download file (TS-300113.mp3)

Part Zero, pre-conference chat:

Audio : Download file (vuc20091218-Part0.mp3)

IRC Transcript 2009-12-18

Guest Alex Balashov of Evariste Systems leads us down the path to enlightenment and understanding of this complex topic, including

Kamailio, the role of Asterisk, the role of SER and media gateways, etc.

- Relationship of Kamailio to OpenSER project history.
- What is Kamailio/OpenSER?

- SIP proxy
- SIP server (for certain purposes, such as registrar, presence user agent, etc.)
- Common uses of Kamailio.
- Service delivery platform engineering and Asterisk scaling using Kamailio.

- Some discussion of sip-router.org initiative.

“But, wait, that’s not all!” – Free stuff!

PacktOpenSERTwo electronic copies of Building Telephony Systems with OpenSER by Flavio E. Goncalves have been offered to us by Packt Publishing.

What you will learn from this book

  • An introduction to SIP
  • An overview of SIP Proxies
  • Compiling and installing OpenSER
  • SIP Proxy default configuration
  • Implementing MySQL support for authentication
  • Installing the user portal (SerWEB)
  • Connecting to the PSTN using a gateway
  • Sending a call to voicemail
  • NAT traversal using mediaproxy
  • Billing with Freeradius and CDRTool
  • Troubleshooting tips and tools.

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2 Comments

VUC Winners

Posted by Zeeek/Randulo in The Rest

In the past 2 weeks, thanks to our friends and sponsors, VUC peeps have won cool prizes

Last week’s Howler Technologies giveaway, 10 X G.729 Howlet Licenses:
Winners: Blake Ray – Saturn Networks, Jakub Klausa, Maxim Samo

This week’s Polycom IP 335 from e4strategies: Mike Tabbert

Book “Building Telephony Systems with Open SER” from Packt Publishing: @FearNoIdea and “TheDavidFactor”

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Jabra Discussion

Posted by Zeeek/Randulo in VoIP

Podcast: Download

jabraKarl Fife Talks to Scott at Jabra about the GN94nn series headsets

Audio : Download file (Part2gen.mp3)

PRO9400

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Accelerated Asterisk: Howler Technologies

Posted by Zeeek/Randulo in VoIP

Podcast: Download

hwlr-top-logoHowler Technologies CTO Jay Fenton joins us from the road. Howler offers optimized codecs to change the transcoding capability your network. We will have a few licenses to give away today, so be there. Some talking points for today, from their site:

  • 425 Transcoded G.729 calls on a single PCI card.
  • Floating licenses for multi-server deployments.
  • Support

Howler Technologies has offered to give away 3 packs of 10 g729 licenses in hopes of getting community feedback. Contact them by going to the web site at http://www.HowlerTech.com. If you’re interested in g729, be sure to listen to this informative discussion.

Audio : Download file (TS-295587.mp3)

IRC Transcript 2009-12-11

Next week: Kamailio and Open SER with Alex Balashov, Evariste Systems

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1 Comment

Exciting Times for Wideband SIP Clients

Posted by Zeeek/Randulo in VoIP

Yep, three of them, count ‘em, three SIP xcleints should be g722 capable soon for the Mac (and linux and windows).

I have been testing (and/or talking to the authors of) these:

Blink (Mac OS X only, )

Zoiper (SIP/IAX Linux, Mac, Win)

Telephone (Mac OS X only)

They all use pjsip which caused some distortion problems at first. This thread in the Asterisk-dev mailing list sheds some light on the issues to change.

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4 Comments