Hi guys,
I’ve a hybrid network I use Mikrotik Routers in the main NOC and Ubiquiti radios for the Wireless part, then I use unmanaged switches to each apartment and airRouter as Client Router, and then a VOIP ATA or VOIP Phone. Could you recommend me what is the best way to implement QoS to ensure good voice quality?
QOS is not a simple topic. At the high level you must mark everything that enters your network or have valid reason trust that it is marked correctly ( trust boundary and a trust relationship). Only marking VOIP will do practically nothing. The devices on your network must ALL support the type of QOS you choose to implement. An un-managed switch typically doesn’t do that. Cisco has some good videos on youtube. The hardware is different but the principals are the same.