Archive for voip category:
Asterisk 1.4.22 Agent call acknowledgement bug
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The behaviour of Asterisk has been altered since 1.4.21, possibly in error, with regard to answering calls from call queues.
There is a feature that requires agents to press # when they are ready to speak to a caller. Since we forward calls to agents via their mobiles, rather than auto-answer calls in a desk environment, [...]
Openness and telecoms
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This is a response to Lee Dryburgh’s article on Skype. We had a debate on Twitter, but I have not yet mastered the art of debate in 140 characters!
Lee’s premise is that “Certainly Skype is not a walled garden. All things being relative, it’s certainly not overly closed either.” Lee claims that the accusations of [...]
2011 – An addressing odyssey. Preparing enterprise for IPv6.
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Yesterday I gave a talk to Sheffield GeekUp on preparing enterprises for IPv6 [download]. The premise of the talk was :
IPv4 addresses are scarse, and at current consumption rates, the IANA pool of free v4 addresses will be gone at the start of 2011.
This starts a “Post IPv4 world” where the IPv4 internet continues to [...]
VoIP For Network Operators Tutorial
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These are the slides that I presented at NANOG44 in Los Angeles on Sunday, “VoIP For Network Operators“.
This talk was for network operators looking to build voice segments of their network, and the slides cover
Voice Basics for SPs
Why Operators should care
Voice Peering
Metrics
VoIP Security
Vodafone’s legal challenge to fast porting.
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I tried to open some dialogue with colleague members of the ITSPA about Vodafone’s legal challenge to Ofcom’s two-hour number port ruling. Instead I got a number of offlist replies suggesting Vodafone’s challenge is still news to many in the industry.
Today, if you want to port your number from one service provider to another, it [...]
Voice peering
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I come from an IP engineering background, and now work in a telecoms role with Localphone.com. Huge amounts of crossover exist between the two disciplines, especially now that inter-company telecommunications interconnections are now regularly made over IP, but much of what someone will learn about peering in the voice world will not be mellifluous [...]
If VoIP kills phreaking, who are tomorrow’s engineers?
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“Ma Bell is a system I want to explore. It’s a beautiful system, you know, but Ma Bell screwed up. It’s terrible because Ma Bell is such a beautiful system, but she screwed up. I learned how she screwed up from a couple of blind kids who wanted me to build a device. A certain [...]
Making the right ipv6 noises
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I’ve been allowing the webcast of RIPE55 to mutter away in my ears all week and have let myself get distracted from time to time when the topics turned relevant to networks I operate or the chatter got interesting. A bit like the end of today’s ipv6-wg session.
Six months ago I was quite sure that [...]
