All articles tagged as: telecoms

SIP Rejection Testing

Every now and then I throw together quick little one-off scripts for testing things that might benefit a wider audience. Sometimes it's handy to test how particular devices or platforms handle specific rejection codes, so I threw together this little tool in node. Basically, it runs at the command line and listens on a non-standard port (8877) and replies to every SIP INVITE message it receives with the rejection code you enter on the command line. You can change the rejection code just by entering a new one at the prompt, thereafter any calls will be rejected with that new code. It's not perf…

Read more »

aqva-usations

Ok, so that pun didn't really work. I've already posted a lengthy rant about aqva bathrooms and their complete lack of customer service after supplying me with defective goods. Well, today, after sending them the recording of the call in which they told me they were sending things out (lying about it) and lodging a chargeback with American Express and making a threat of legal action I got the following; As a goodwill gesture, we will be sending out a set of replacement legs. Now, whether something can be considered a goodwill gesture after weeks of arguing, threats of legal action, and a charg…

Read more »

When is withheld, not withheld?

I love Three's new WiFi Calling feature (well, it's an Apple feature, but Three finally decided to support it!) – ultimately it lets me use my phone (most of the time) at home for calls and SMS (think 2FA!) where there is no signal on Three. However, I recently discovered a big issue. With "Show My Caller ID" turned off calls I make are not withheld. That is the called party can see my, supposedly private, Caller ID. The Law Ofcom wrote to all UK CPs a number of years ago reminding them of their responsibilities, part of this eMail included; CPs must respect the privacy rights of con…

Read more »

How not to do APIs

The company involved here will remain anonymous, as they offer a good (and relatively unique) service and I don't want to damage any relationship with them, nor discourage others from using them just for this reason! Additionally, their support has been excellent. I hope others find this though, and take it into account when considering their own API design and strategy decisions. As you may know I have some experience developing complex APIs for large service providers. The approach to this has changed over the years, but some of the basic principles remain the same. The Company The company…

Read more »

Eurobeat: Moldova!

I have provided voting for numerous (almost 20 now!) productions of Eurobeat: Almost Eurovision and am pleased to announce that one again I am providing the voting for the new professional production of Eurobeat (and the visuals are looking better than ever!) And the only thing better than a new Eurobeat with all new countries and professional production values is giving back a little elsewhere. Eurobeat: Moldova is using premium SMS messaging for the first time, and donating 100% of the funds raised to two charities - Waverley Care and Dickens Legacy For more information see eurobeatvote.net…

Read more »

Husqvarna Automower Challenge - Communication

For a bit of background on this see my first post on this. But, in summary, I am a participant in the automower challenge. Automower Connect The larger Automowers (430X, 450X) support a smartphone app called "Automower Connect" which allow you to configure and control the mower from your iPhone. Unlike some competing products, this doesn’t use WiFi. This is a good thing as the range of a typical home WiFi router would mean that in some parts of larger garden it would be unable to communicate. Instead the mower itself has a built-in SIM card and functions like a mobile phone. The SIM…

Read more »

Phishing at LLoyds

Today I received a phishing eMail, nothing unusual there... I get loads of them, but this is a little more convincing than most for one reason, it contained my postal address (ok, one from many years ago, but nonetheless it proves that it was a lot more targeted than some) The eMail As usual the grammar and formatting are both terrible, so you'd be unlikely to believe this is from Lloyds bank, but many people do it seems. The usual fake urgency is a bit of a giveaway as well - Please respond within the next hour to avoid a permanent block. - why ? So, let's respond ... The website This is actu…

Read more »

Reverse Lookup ("CNAM") in the UK

For many years the USA has had a 'CNAM' service (or Caller ID Name), allowing telecoms operators to show the name of the caller rather than a number. There are obvious advantages to this, having "BT" show when they phone rather than 0800 800 150 would be much more useful, but is also open to abuse. After all, would you trust a call appearing to be from your bank if the name appeared? The method of powering this is known as a Reverse Lookup. OpenCNAM Today I stumbled upon a service called OpenCNAM which claims to offer this across the globe and, surprisingly, matched my mobile number…

Read more »

Nuisance calls, no drama.

Have you received a call from a number starting 020 7946? I have, and it took me by surprise, because these numbers can never exist. A little background; I am, and have been for many years, very actively engaged in trying to prevent misuse of telephone networks. This is a very 'cat and mouse' game, and we have to keep up with the mice who keep trying to find new ways to get calls through, or appear more genuine than they actually are. Most recently, there has been a move from Withheld / Unknown calls to those presenting a number, presumably because of people (like me) who will ignore anonymous…

Read more »