Dropped DAHDI calls

Published on 04 April 2010 by Colman Carpenter in Asterisk, Telephony, Tips

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Interesting issue with a new installation recently. The customer has, for now, a single analogue line hooked up to our PBX via a Digium TDM410P card. The DAHDI configuration had a number of ‘extra’ values in chan_dahdi.conf to recognise Caller ID, etc. However, one of those values was making all outbound calls over the analogue [...]

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It can be very obvious when you, as a business, might consider a new phone system – moving office, for instance. However companies don’t move office very often, so does that mean you should stick with what you have? Not necessarily, no. I’d like to suggest some other times at which you should at least [...]

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SME VoIP traffic considerations We have had a couple of installs recently that are very typical scenarios in the SME market sector. Interestingly enough, though, the businesses are very different to each other, one being an office-based company in the internet sector, the other a retail outlet serving the building trade. They are similar in [...]

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FreePBX and group pickups

Published on 24 February 2010 by Colman Carpenter in Asterisk, Telephony, VoIP

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Customers need to be able to answer the phone quickly and easily, it’s still the life-blood of most businesses. But smaller companies don’t always have a receptionist, especially if they don’t get a lot of visitors. So companies like these rely on the phone being picked up in rota, or by any one of a [...]

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This is the first of a series of tips taken from the recent Packt publication Asterisk 1.4 – The Professional’s Guide, of which I am a co-author. I hope you enjoy it and find it useful. Asterisk is a very capable telephone system, that’s a pretty uncontroversial point of view. It’s also pretty safe to [...]

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Skype and SIP

Published on 09 September 2009 by Colman Carpenter in Asterisk, Blog, News, Open Source, Telephony

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So Skype have embraced the SIP world, including integration into Asterisk. It had to happen as there was no other way Skype was going to make significant inroads into the business market (see my previous blog on Ebay selling Skype). So now it’s possible, from within your VoIP-enabled PBX, to make a receive calls to [...]

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Interesting news over at bMighty.com Back when Microsoft announced that it was entering the SME VoIP market with the Response Point product, I will admit to a shiver of apprehension. The mighty Microsoft machine has more than once entered a market, grabbed significant market share, and through tight integration with Windows and/or Office, made its [...]

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I have recently upgraded my mobile phone to a Nokia E51, partly because I wanted to test out it’s potential as a SIP extension on our Asterisk network. This, of course, opens up the possibility of having one phone that you use whether you are in the office, on the road, or even at home. [...]

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Yesterday I received in the post some information from a company (who shall remain unnamed) in the public sector who had put out an Invitation To Tender (ITT) for a new, VoIP-enabled telephone system. The ITT itself contained very little information indeed about their requirements, as is often the case. However, it did mention the [...]

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Just noticed that Atcom have a new firmware available for the AT-530 (v070813). Right now there does not seem to be any information on their website about what issues it is supposed to address, or what features it adds (nothing I can see). However, in the interests of my loyal readers, I decided to install [...]

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