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 

Compare our rates

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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 (2017-05-03)

Monday 1st May 2017

We will be updating our Managed A-Z Termination rates and codes on May 3rd 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 »

Direct Connect from 170+ data centres (or the cloud)

Saturday 1st April 2017

We’ve been on a bit of a mission recently to encourage customers to connect directly into our network to improve quality, stability and attack protection. See our blog post on “Surviving Somebody Else’s DDoS” if you’re wondering why. Right now 86% of our traffic comes in over peering, which is an incredibly high figure; just [...]read more »

Anycast portal now live

Wednesday 29th March 2017

We’ve taked about our new containerised architecture at various conferences, and most recently we talked at ClueCon Weekly on the work we’re doing with anycast. Last night we took the bold step of moving our portal and a clone of our API*, entirely over to this infrastructure. We hope you like it! We will be [...]read more »

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

0330 122 3000

Registered in England 03379831