Suggestion for VoIP network

Anyone has suggestions on a routerboard choice for a small wireless network dedicated for VoIP calls ? Current network consists of Motorola Canopy backhaul and 2.4 GHz access points. We were looking at the RB600A to manage traffic accross 5 AP sites but one of the techies raised the issue of possible packet loss and reduction of call quality with a high volume of calls. What do people think and recommend?

I can’t really imagine it would be a problem, and likely if you suffer from packet loss it’s the 2.4 GHZ access points not the router. Using 2.4 will come back to bite you in the ass probably.