PBX aimed at SME's and small companies are typically sold by small telephone resellers, who purchase the sytem on demand from a wholesaler.
The equipment will require a power supply and incoming telephone lines to function. It will also require a dedicated area to house the electronics. There will be an annual maintenance charge for the installation. Upgrading or changing the system will require you to call in the telephone reseller. You will not be able to mix and match this equipment with that of another supplier.
The Birchills Telecom solution is an open solution which means that you can change to another providers without scrapping all your hardware. You can upgrade or downgrade at any time - there are no long term tie ins. There are no maintenance fees with Birchills Telecom. Birchills Telecom gives you free calls to branches.