Does you office have a PBX? Most likely it does, and it may well use different phone wiring. For example, it may be putting ringing on a third wire,
rather than the home 2-wire convention. You'd probably have to search for the specs for the wiring for the PBX/key system that your office uses.
If you have structured cabling in your office, then there will be an RJ45 adapter under your desk most likely, to connect between the cabling and the
phone. You need to check it is the correct adapter, because there are at least 3 kinds - PSTN master, PSTN secondary, PBX. You need to
use the correct one (most likely PBX).