since we have some problems with some VoIP servers, we optimized them bridging internal customers' routers, but only hardware (in & out on same LAN switch). We want to use from now on this good AP by Mikrotik (http://routerboard.com/RB941-2nD-TC).
Only after various (not extensive) tests, also using PTP bridge (then using "bridge" feature as a software bridge) this product not operate exactly as a hardware bridge (4 example: master/slave on RB2100 or similar or TP-Link Routers).
Infact VoIP external server does not see CPE WAN IP but LAN IP.
Is there a better way to obtain that "harder" switch?