When looking at list of phones in the “PHONES” tab, you may see a few devices that are included that are not actually VoIP devices. The MAC addresses of some of routers may match the OUIs of some VoIP phones.

The OUIFilter.cfg file allows you to enter more than the first three octets of a MAC address if necessary to narrow down the phones – or even a specific user’s phone.

For example:

00.10.49 ShoreTel  This will show all ShoreTel phones in the environment Bob’s ShoreTel 230  This will identify a specific phone

If the customer below has phones and network equipment that both use the same MAC prefix (OUI), then use the next digit to narrow it down:

00.23.1B.6A Cisco