MT pppoe-server & IP Phone Dynamix, have trable

RouterOS General
1

The problem is in conencting by pppoe “IP phone” to RB 532 (mt 2.9.48). To authentication use radius server. From computers pppoe conections work fine(I test it in Windows(own pppoe client), Freebsd(ppp),Linux(raspppoe), Mac OS X). In log of MT haven’t seen any pppoe request from device( IP Phone). I try everything
I haven’t get result. Maybe anyone have the same trable. How to solve this problem?
I take diferend version of MT — not work. Pleas help me!

2

if don’t know dynamix it is welltech products IP Phone LP-201(SIP)

3

any sugestions?