Straight-talking, in writing

The Simwood blog.

Telecoms, AI in the call path, network engineering and the occasional strong opinion. Several times a week since 2009.

VoIP Fraud Analysis 2016

We’re delighted to release the 2016 version of our VoIP Fraud Analysis report. This updates the 2014 version with an additional 2 years of data and m…

Are you relying on fail2ban to secure your Asterisk?

Let’s be clear, we love Asterisk. If someone wants an easy to configure PBX, we send them that way, and indeed our own new non-technical staff have t…

Thanks for a great year!

By Simon Woodhead As we near Christmas I wanted to take time to say a huge thank you to all our customers and wish you and your families the very bes…

How to build a mobile service – Part One: R&D

Hardly a day goes by without a call from someone interested in building a new mobile service who is looking for some advice on how to get started; wh…

Which one number do 95% of VoIP attackers dial?

It is some time since we published our VoIP Fraud Analysis in 2013 so an update is overdue (and coming). In there we introduced the notion of “test n…

Christmas hours

Given many other operators are closing their porting desks over the Festive Season, we will not be processing porting orders during the period from D…

Surviving somebody else’s DDoS

Many customers route traffic to us over the public Internet. Given the way our network is architected and our policies, most of this comes to us over…

We’re hiring!

We have two vacancies in our Southampton office, please see below for more details and contact Adele Dowling (adele.dowling@simwood.com) if you are i…

SS7 architecture

Followers of our status page will know that there were some issues with our interconnects to/from BT recently. Those who don’t follow it hopefully di…

Lower pricing for Simwood Mobile

Simwood Mobile has been out for a while now and we’re seeing all kinds of services being built on-top of it, from call recording and business PBX int…

Terms of Service Changes

It has been many years since our terms were written and both our business and the market have changed a lot. We have therefore updated our Master Ser…

Comms Business Cover Story

We’re really pleased to be November’s cover story in Comms Business magazine. If you haven’t received your copy of the magazine yet, you can read our…