I was reading the HT-286 user manual, and ran into something that seems somewhat "unusual":
default value for Layer 3 QOS:

  1. Grandstream defaults it to 48. Why? the default DSCP for voice is EF codepoint 101110 (per RFC 2598) and the default DSCP for signaling is AF31 codepoint 011010 (per RFC 2597)
  2. Is it for signaling/media?

please do not say "find out for yourself...", as I've already sniffed the traffic, and...

while someone might say "it does not matter as most consumer grade routers/gateways will not observe these settings", inquiring mind wana know

Cheers,
-v