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.

Why WhatsApp Business Messaging Isn’t a WhatsApp Strategy – A Simwood Point Of View

Having recently attended ITW and spent time speaking with carriers, service providers, technology vendors and partners from across the industry, one…

SimCron9: WhatsApp, Compliance, and the Future of Comms

Hi, we’re back with another SimCron episode featuring some new faces this time. David Duffett, of course, Pete Farmer, CCO and our new CRO Raj Dass.…

Whack-a-shell

Here at Simwood, we have a policy on not providing Haynes Manuals to enable scrotes to bypass our controls and processes, which are a line of defence…

Twenty Years, One Constant, Kamailio at the Heart of a Changing Stack

Our CTO Charles Chance, took to the stage at KamailioWorld to share the story of how Simwood has evolved over two decades with Kamailio at the heart…

We’re on the Cover of Comms Business – May 2026 Edition!

We’re proud to be the cover story in the May 2026 edition of Comms Business. Thirty years ago, it was an idea and many late nights coding. Today, we’…

Aww bless – protecting consumers is too hard

Ofcom recently released “Statement: Reviews of Call Termination Markets and End-to-End Connectivity Condition”, a consultation we had a lot to input…

Enshitification in telecoms

En-shit-i-fi-cation is a term coined by Cory Doctrow a few years ago to describe how once good digital platforms or services become ever ‘shitter’. W…

Kamailio CVEs

A few old vulnerabilities have been discovered in Kamailio (formerly OpenSER and SER) code, and two CVEs released: – CVE-2026-39863: Core – TCP Data…

Welcome Raj: giving the revenue engine some cylinders!

Those who’ve been around Simwood a while will know we’ve never really gone in for fancy job titles or buzzword bingo. “Chief Revenue Officer” is defi…

Learning Telecoms by Doing

Hi. I’m David. I look after infrastructure and systems at Simwood. While I haven’t worked directly with many of you, I work closely every day with th…

Call Quality Reports

Effective today, you will be receiving weekly emails highlighting call quality on your account as a courtesy. These are in beta so we welcome feedbac…

Diseconomies of Scale

When I was at school, business was about growth: growth leads to scale, scale leads to market share, and market share leads to margin. Big businesses…