The Sonifex DHY-04VUP is an upgrade kit designed to bring 4G VoLTE (Voice over LTE) cellular connectivity to legacy Sonifex DHY-04G or DHY-04HD telephone hybrid units. A future-proofing solution, it ensures that your equipment remains compatible and functional in changing telecommunications environments as older 2G and 3G networks are being phased out in many regions.
The DHY-04VUP provides a swappable module that enables the hybrids to connect to cellular networks for broadcast-quality audio calls.