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 KX-T PBX.
From extension 21 only
On/Off (SP-Phone) or lift receiver
77
HHMM (12hr)
0 (AM) or 1 (PM)
#
On/Off (SP-Phone) or replace receiver
From extension 201 Only
Move switch on back of handset to the ’PROG’ position.
0
YYMMDD
0-6 (Sun-Sat)
HHMM
0 (AM) or 1 (PM)
Store
Move switch on back of handset to the ‘SET’ position
If you need any assistance, then please call the Opus service helpline on 020 8545 8545.