How to put an ip phone on the Internet via vpn on a computer?

Question

Telephony

Given:
1. ip phone Dlink-150s
2. PC with two physical network cards and tap from vpn client

а) 192.168.1.0/24 eth0
б) сетевуха №2 которая соединена с телефоном (в wan телефона) без айпи
в) 192.168.30.0/24 tap_1

The PC has a connection to a VPN (softether) that works through a TAP adapter.
The phone is plugged into the second network card.
The first network card is a LAN
Question: How to put the phone on the Internet via a PC (NOT the other way around, this is important). It is necessary for the phone to receive an address from the subnet 30.0/24