Having recently completed the installation our 40 user system, I must say I am have been extremely pleased with the outcome and support Opus provided throughout.
Libin Chandy
2020 Optical Store

Please follow the instructions below to change the system time and date on a Panasonic SBS PBX.
From extension 10 only
On/Off button or lift receiver
Memory
#4
HHMM
Hold
On/Off button or replace receiver
If you need any assistance, then please call the Opus service helpline on 020 8545 8545.