@Merakibgp
Yes you can know which MAC Address belongs to who. As you can see below PC-ME is the computer attached and the Polycom is the VoIP phone.
If for whatever reason the devices appear the same and you can't determine by the device name. The CDP information will be the device directly connected to the port. So you can click on the "raw" and verify the mac address and IP address to make sure it's the VoIP phone.