Asterisk / Trixbox digital PABX in real world use
May3
What this looks like is a old Toshiba laptop sitting on a shelf. Which is correct except right now it is handling up to a few hundred phone calls a day as a digital PABX running a Trixbox build of Asterisk+Linux software .
What does this mean? Well…Wanaka Wastebusters, where it is installed (please do not steal it :-), has one phone number people can ring in the normal phone like way. That phone number has been parked at a service provider and there enters the internet. Over the interweb thingy this laptop talks to the provider and can conduct up to five simultaneous calls. At Wanaka Wastebusters there are ten extensions that each have voice mail and are available through the IVR (a recorded message you get when you ring the number) – all of these features are running off the laptop. People can dial within each others extensions and transfer calls etc and generally be productive hopefully.
Nice – but why? Well it saves a few hundred dollars a month on line charges for extra phone lines with Telecom and means we can add users and features as we need them. We can also make use of cheaper calling rates and eventually peer directly hopefully with other businesses using SIP which is the glue like protocol making all the VOIP stuff happening. It is an acronym world.
Pretty cool use for an old computer huh. I’m not sure how long a laptop will last always on but it has been working for 5 weeks no problem and because it has a battery even has its own UPS built in. We might have a sweepstake on what gives up first – the power pack I’d say.
In case of failure or hacking I am building another one on a old IBM Pentium 4 which could be plugged in as a replacement. What I would really like though is a few Sheevaplugs, amazing 5w super computers. That is ’super’ as in awesome not as in a Cray – although they are probably faster than most Crays ever built… maybe one day …
Laptop bag prototype – 95% recycled content
May0
I haven’t had much time recently to do as much on Loopcase as I’d like but I did manage to get a prototype laptop case made fro Tommi last week. It is for a Sony 13.1 inch Z-Series (VPCZ116GGB).
I really like having a separate case for the laptop/mouse/power adapter to my pack or other bag. Having a laptop in with my soup pot or tape measure and pliers I seem to carry around doesn’t feel right. So this format – a padded sleeve with front pocket for the peripherals works really well. You can always throw it in another bag if needs be.
New small business Voip system up and running
Nov3
Well it’s been a bit of an epic – mainly struggling with diverse hardware and getting Telecom to give up the Wanaka Wastebusters number. But the new internet based phone system is now up and running.
The system:
- 4 x lines on standard phones through 1 x Linksys ATA and 1 x WAG with 2 ATA ports
- 4 x people using softphones – X-Lite
- 1 x Linksys SPA922 VOIP deskphone
- Auto attendant on main calling in line
- Eftpos and Fax on a POTs line which also carries the ADSL
- Voicemail on all extensions with voicemail sent to email addresses where necessary
Lessons so far:
- Linksys ATA’s seem to be more reliable and give better call quality than a software phone on a PC.
- Starting out with one sort of end point (ATA’s) would have been easier. Having people on three different solutions makes config and customization a bit of a nightmare.
- The free version of X-Lite does not do a blind transfer, I haven’t found a free softphone yet that does but will try Zoiper tomorrow.
- Without a local digital PBX (Wastebusters is using the Kiwilink service) you are restricted to the options that the external service offers on their (usually Asterisk) setup. In this case a limit of 9 speed dial numbers restricting the pool of possible blind transfer speed dials.
Savings
- Reduced monthly rentals by around $200
- Cheaper calling costs
- Flexible extensible PBX features, mostly changeable through web interface
Fenestration fustration – antivirus
Nov0
I would rather be worrying about windows of a glass variety – but in order to design on a computer I accept there is a maintenance cost. My Windows XP T61p is slower, mainly due to a full disk, than ever and I hate over bloated antivirus software that advertises to you at every opportunity (in this case Avira).
I have always thought good antivirus should be part of an operating system, after all who knows the internal workings of a platform better than the developer? It has always irked me that after buying Windows you then have to buy or find a kindly free provider for a key operating system component – protection from virus’s.
Over the years I have used a paid for Nortons license (horrible and slow), a free AVG edition (actually quite good) and a free Avira (German software? Had to try it but horrible popup ads). So it was with pleasure I installed Windows Security Essentials a few weeks ago, its small, fast and unobtrusive. And totally free – ie: no ads. I then went on to replace Nod32 on 8 computers saving Wastebusters $400 a year. So far the experience has been exceptional.
I also disabled the Client Security Solution in the Bios which has made a small difference.
Display link…yummmm…
Feb0
I went looking to buy a new monitor today – and ran into something interesting. I rarely get excited about new hardware…but…I imagined something like this four years ago and now it’s here!
I always thought monitors would ultimately be a similar resource to a computer as a webcam, keyboard or mouse. Imagine getting rid of the annoying cables and being able to chain them together USB style or use small 2.4ghz wireless connectors. Your monitor could be on the other side of the lounge and you could play your movie to it from your laptop with no string connected. Ah bliss – they are here.
There are only Asus ones in NZ so far I think, and surprisingly Dell doesn’t show any. I think I’ll have to wait till there is a bigger range…
Ubuntu, VMware and Graphics applications
Feb0
I have had an excellent experience running Ubuntu under VMPlayer on XP as my development webserver. It’s faster than WAMP and easily transportable.
So, when it came to rebooting Merles Dell 1330 which has had consistent networking issues with Vista I thought, hell, we could have Ubuntu running on the wee guy and Vista running as a guest under VM.
This would have the benefit of the guest being easily back-up-able with the apps installed and transportable across computers.
Turns out that is good in theory and not in practice, mainly because running graphics apps is so ram hungry (I think). Vista with apps took up over 20gb and was crazy slow.
So it is back to Vista, a shame because Ubuntu 8.10 was amazing. It recognised all the hardware first go and was a fast joy to use.
Clients
