Featured
CLI Filtering Changes (or not!)
By Simon Woodhead Back in 2018 we had General Condition C6.6 (GC C6.6) introduced, requiring operators to ensure CLI was valid on the way in and out of the network, amongst other things. I remember it well as we implemented it fully per the Ofcom…
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International Telecoms Week (ITW) 2023
By Simon Woodhead ITW takes place in Washington DC in mid-May and we’ll be there in force for the duration and a few days before. If any customers, peers or prospects want to meet with us either informally over a beer or for a private…
Hello Old Friend
By Charles Chance Manchester is back and it’s big, in fact it’s EPYC! Dad jokes aside, I have some exciting tales about flashing lights and shiny boxes to share.. In Simon’s 2022 ‘Christmas letter’ he mentioned how we’d been working on bringing up a new…
Are you risking your business with your carrier choice?
By Simon Woodhead Happy New Year! We find that the new year is traditionally the time when people like to dust-off relationships, reflect on the past year and put in place provision for the new. It (and the preceding quiet period) are a great time…
Head in the sand is no longer an option
By Simon Woodhead It has been a little while since I’ve opined on the Telecommunications Security Act 2021 and the all-important secondary legislation it enabled, the Electronic Communications (Security Measures) Regulations 2022. My most recent entry is to reiterate how these rules apply to even…
Zero Defect Routing
By Simon Woodhead There’s a story about our termination which we’ve been pretty poor at telling! I’d like to try and address that. The technical story is pretty evident I hope. Our own high performance modern network gives diversity and low latency access from 5…
Carrier Services rate update (2023-06-07)
We will be updating our Managed A-Z Termination rates and codes on June 7th 2023. As usual, these changes are colour coded in our full rate files available through the portal as below. Unlike other operators, we are not passing on UK origin surcharges, relying…
API

Realtime Call Webhooks
We recently introduced a number of webhooks, and realtime Call Control functionality allowing you to end calls in progress via the API.…
Intelligently Rejecting Nuisance Calls since 2014
Back in 2014, we launched Intelligent Call Rejection, a Simwood…
Commercial

Carrier Services rate update (2023-06-07)
We will be updating our Managed A-Z Termination rates and codes on June 7th 2023. As usual, these changes are colour coded…
International Telecoms Week (ITW) 2023
By Simon Woodhead ITW takes place in Washington DC in…
FTR/MTR increases
By Simon Woodhead The annual revision to carrier interconnect rates…
Intelligent Solutions

Zero Defect Routing
By Simon Woodhead There’s a story about our termination which we’ve been pretty poor at telling! I’d like to try and address…
UK Emergency Alerts Test
On Sunday 23 April at 3pm the government will be testing Emergency Alerts. This…
Trunk routing config (and more) now live
By Simon Woodhead When we did the Carrier Services pricing…
IP Network

Hello Old Friend
By Charles Chance Manchester is back and it’s big, in fact it’s EPYC! Dad jokes aside, I have some exciting tales about…
Regulation

TSRs and Encryption
By Simon Woodhead There’s a bogus narrative circulating that the Telecommunications Security Act 2021 doesn’t apply to all but the largest entities. …
Are you inadvertently enabling scammers?
By Pete Farmer We’ve mentioned it before, but it may…
“Sorry Mummy, it was an accident!”
By Simon Woodhead Those are very well used words in…
Security

3CX Warning
By Simon Woodhead We’ve been made aware of a possible serious vulnerability within 3CX. We’re not in a position to confirm this…
Voice

Norway CLI Restrictions
By Simon Woodhead In the latest act of the relentless re-localisation of telecoms, as domestic operators seek to re-enforce their monopolies, major…
White Papers

Our VoIP Fraud presentation at LINX84
We had the pleasure of speaking at the London Internet Exchange’s LINX84 meeting on February 17th regarding our VoIP Fraud research. Below…
Simwood VoIP Fraud Analysis – get your copy now
As regular readers will know, Simwood has operated a VoIP…
Get your DNS in order!
With the Olympics ever closer and our warnings over commodity…