Thank you for the answers!
Bandwidth: We have 50Mb down, 5Mb up. At most, we have 5 callers at the same time. We are currently using g.711 (ulaw) as the codec. Even with that codec (the least compressed), our bandwidth should be fine. I monitor everything with ‘The Dude’, and can see that there are no massive upload/downloads going on during the call drops.
CPU usage also does not appear to be a problem. It sits around 0% - 10%.
The only abnormal thing I have on the router is a HUGE static list of DNS entries for ad server blocking.
I have our phones set up to add the QOS fields on the ip packets, and a router mangle rule which counts them (and adds a ‘VoIP’ mark to them), so I know that the packets do indeed have QOS (DSCP TOS = 46) on them, and I think that is the best to use. I need to review that thouh.
Thanks for the help! Here is the printout of the two rules that ‘see’ the voip packets:
2 ;;; voip tos 24
chain=prerouting action=mark-packet new-packet-mark=VoIP passthrough=yes
dscp=46
3 ;;; VoIP RTP PORTS
chain=prerouting action=mark-packet new-packet-mark=VoIP passthrough=no
protocol=udp port=10000-36000
Hmm… what I need is a VoIP guide for MikroTik. Any sources you’d recommend?