I've work in a distributor of PABX before. I summarize report of our engineers. I also make sure bills are paid. Answers customers request and complaints. Making sure that it is being handled by the engineers.
Onlinejobs.ph "ID Proof" indicates if "they are who they say they are".
It DOES NOT indicate skill level.
ID Proof scores are 0 - 99 with 99 being the best. It is calculated based on dozens of data points.
It's intended to help employers know who they're talking to is real, and not a fake identity.