In short: No hardware incompatibilities. Our system can simply be migrated in case of hardware replacements with continuous system updates guaranteeing standard compatibility.
Extended version: With customary telephone systems, if a device breaks then it can only be replaced with a new one from the same model range. If a model range is no longer available (after several years model ranges are usually phased out) then the ENTIRE telephone system needs to be replaced because of one defective device generating high costs. This will not happen with a Consertis telephone system since it is based on Fusion PBX and SIP-enabled devices. They are compatible with all devices true to standard and we can guarantee the exchange of defunct telephone devices even 10 years from now.