If you think that you may need the flexibility to increase the number of channels on your system at some time in the future then you will want to build scaleability into the specification when you commission your two-way radio system.

You may want to specify a Tier III system from the outset but this has cost implications in that each radio will require a licence at a cost of in excess of £100.

Hytera has an innovative  Tier II system which may provide you with a cost effective alternative – Hytera XPT Digital Trunking.