Just a quick survey

Something you did not mention here is if the VoIP calls to and from the branches would be going over the VPN to the PBX that I assume is in the datacenter.
That is actually the biggest issue in the entire scenario.
If the SIP traffic from the remote office will be going over through the tunnel then you will have to actually provide QoS priority to the entire VPN first. then a separate QoS policy for the traffic inside the VPN.
For those taking notes at home, this is also why VLANS are bad. You QOS the entire VLAN not the actual RTP traffic on the VLAN when you use 802.1Q.

nick8010 wrote:
well you can't qos traffic on the internet, are you saying i should limit the data traffic on the pipe to like 40 in out for the data traffic and reserve 10 for the voip stuff?This is you caving in to marketing and hype. There is no such thing as QoS for 99% of ALL call ever. The only time you could even possibly get a 100% QoS would be for the you and the person you are calling to BOTH be using the same SIP trunk provider and the same carrier for said provider.
The slim chance of THAT is why there is no real point in putting all of your eggs in one basket and paying for a SIP trunk from your carrier to give you the warm fuzzies about QoS.

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