AUTHENTIC WHOLESALE
TELECOMMUNICATIONS

Introducing Simwood

Simwood is a leading provider of international carrier services with wholesale IP telephony and a portfolio of quality managed services, focussing on the needs of customers seeking a quality and stability of service that their business can depend on.



Our Network

We own our network and 90% of the traffic across it is voice. On-net in ten data centres for redundancy and availability, we have a pathological hatred of congestion - if a link is routinely more than 20% utilised we upgrade it. We believe we offer the network for voice business.

Whilst our network exists first and foremost to give our customers the best quality of service possible for their voice traffic, we can also offer MPLS, VPLS, Full and Partial IP Transit and co-location services.

 Network Datasheet

VoIP Termination


We offer quality-focussed, competitive SIP termination over our interconnects with national and international carriers allowing you to offer reliable voice to your customers.

100% of UK traffic and the majority of international traffic on our network is terminated via our own direct SS7 interconnects.

View Full Ratecard 

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UK Wide Numbering


With numbering in every UK area code, along with a wide range of UK non-geographic numbers, we can provide suitable numbers for all your customers.

Our dedicated Number Porting Desk are on-hand to manage the often challenging process of number porting. We can port numbers from over 30 telecommunications providers, including hundreds of their resellers.

  Wholesale Voice Datasheet

Real-Time Control


Our market-leading API is at the core of everything we offer, all aspects of our services can be controlled via the API making it easy to integrate our service with your own.

Our Customer Portal is built entirely on our API and brings the unique and powerful features of the Simwood API to a wider audience, in a more human-friendly format.


Fraud Prevention


We are committed to help reduce your exposure to VoIP fraud

Realtime channel and rate limits, fraud hotspot detection, customer configured black and white ACLs, full API control and over 200 checks per call set up all work together to help ensure our customers SIP Carefully.


From the blog

Wholesale voice & SMS rates (2017-07-01)

Friday 23rd June 2017

We will be updating our Managed A-Z Termination rates and codes on July 1st 2017. Our rates can be downloaded below. Please see our new brochure to understand our different service levels. You can check (and change) your current service level in the “Commercial” tab of the portal. PACKAGE RATE BY CURRENCY Managed Interconnect Subject to status Virtual Interconnect – see [...]read more »

New stack update

Wednesday 21st June 2017

Many thanks for the positive feedback following the beta release of our new stack last week. Registration Proxy As advised, our (already beta) Registration Proxy has now been migrated to the beta stack so  User Agent registration and outbound calls from them will be handled there. Media on incoming calls will however continue to route [...]read more »

Our new stack is available in open beta

Wednesday 14th June 2017

By Simon Woodhead We’re delighted to announce our new stack is now available in open beta. If you’re the kind of person who just wants to get stuck in, the links (password protected) you’ll need are: Outbound SIP interop Inbound SIP interop Registration proxy Configuring Opus Whilst we refer to this as the ‘new stack’ [...]read more »

Simwood eSMS Limited
2 Venture Road
Southampton
SO16 7NP
United Kingdom

0330 122 3000

Registered in England 03379831