SIMBA 2.5Gbps Broadband is based on GPON technology which provides for speeds up to 2.5Gbps download and 1.25Gbps upload.
SIMBA 10Gbps Broadband is based on XGSPON technology which provides for symmetrical upload and download speeds of up to 10Gbps.
There may be a need to upgrade your equipment to fully utilise these speeds.