- Overview
- Landline to Mobile Cost Saving
- Fixed Mobile Convergence
- Telecoms Continuity
- Mobile Recording Suite™
- Low Cost Global Roaming
- SMS Broadcast License
Landline to Mobile Cost Saving
Calls from landlines to mobiles are at least twice and sometimes three times as expensive as calling from another mobile. So with around 60% of all business telephony costs being generated from these types of calls, think how much you could save if you could convert all of your expensive ‘landline to mobile’ calls into cheaper ‘mobile to mobile’ calls.
The Obsidian solution enables you to do just this, dramatically reducing your communications costs in a way which is fully compliant with industry regulations. By routing calls to mobiles via a GSM Gateway, most organisations are able to save around 50% on the total cost of their landline to mobile call traffic, and often far more.
Because we operate on a managed service basis, immediate cost savings are generated, yet with no upfront capital investment at all. Our fully managed service includes all installation, hardware supply and ongoing maintenance, and well as detailed reporting to ensure that you always know exactly how much you’re saving. We know it sounds too good to be true, but our clients are always happy to confirm that what we promise is real!
Example savings
With Obsidian’s Landline to Mobile Cost Saving services, you can take advantage of the lowest possible UK calling rates to mobiles. This is typically in the region of 2.5 to 5 pence per minute (ppm)
depending on agreed call volumes. These rates are available across all mobile networks at any time of day, including both peak and off-peak times, and are billed per second.
A typical average annual cost saving achieved by our customers is as follows:
How it works
Our service includes all pre-installation surveys and checks to ensure that we recommend the correct solution for your needs, as well as installation, maintenance and ongoing support from our dedicated Customer Service team. We also provide detailed reporting so that you can see exactly how much you are saving.

Click diagram above for larger image
Our solution has been tailored to conform to all Ofcom rules and UK regulations, offering a fully-compliant route for the delivery of landline to mobile call traffic. And with a GSM Gateway in place we can also provide a number of other valuable services:
- Low cost SMS by linking the GSM Gateway to a PC running our SMS broadcast application, you have the ability to send low cost SMS messages to any other mobile phone for example enabling you to send broadcast messages to all staff or customers, wherever they are.
- Business Continuity because the GSM Gateway creates a direct wireless connection between your PBX and the mobile network, it provides an effective Business Continuity option in the event of a total failure of your fixed line network. We call it Telecoms Continuity. Click here for more details.
- Free calls between corporate mobiles adding extra SIM cards to the GSM Gateway enables you to call any mobile which is contracted to your organisation for free, from your own phone system. The landline call is simply routed via the Gateway to any mobile on the network.
Ongoing support
Obsidian delivers a fully-managed service which encompasses:
- Highly resilient carrier-class hardware and connectivity
- Performance monitoring to ensure continuity of service and to track usage
- Proactive advice on any changes which will increase your cost savings even further
- Full remote and onsite support via our dedicated Customer Service team
- Rapid response to all support requests with most faults being diagnosed and cleared remotely
- Standard SLAs which aim to have all service-affecting faults
- cleared by the end of the next working day
- Configurable rerouting of calls via an alternate method if the system stops working
- Replacement of any faulty equipment at no cost

