Hi All,
Due to some regulations, there is requirement to route all incoming and outgoing Lync calls via PSTN GW. It looks like the only possible way to restrict Lync to Lync calling is
to apply CAC.
There are three Central Sites in topology and four regions are created along with sites and subnets as below:
Central Site: A --> Region A -> multiple sites -> Subnet for each site
Central Site: B --> Region B -> multiple sites -> Subnet for each site
Central Site: C --> Region C -> multiple sites -> Subnet for each site
Central Site: C --> Region D --> Few sites from Region C --> Subnet for each subnet
The requirement is to block all Lync to Lync calls for Region D to/from Region A and B and Region C and route them via PSTN Gateway.
Bandwidth Policy
As per MS, the minimum Audio Session Limit value is 40 kbps. The minimum Video Session Limit value is 100 kbps.
What should be the Audio and Video Bandwidth Limit? I understand, it depends on the link but Can I put any value (as low as possible) here as I don't want to use WAN for any VOIP session?
New-CsNetworkBandwidthPolicyProfile -Identity "BlockVOIP" -Description "Block Lync to Lync Calls" -AudioBWLimit ???? -AudioBWSessionLimit 40 -VideoBWLimit ???? -VideoBWSessionLimit
100
Network Region Links
Region Link 1: A - B (No BW Policy as there is no requirement to restrict VOIP)
Region Link 2: A - C (No BW Policy as there is no requirement to restrict VOIP)
Region Link 3: A - D (BlockVOIP BW Policy)
Region Link 4: B - C (No BW Policy as there is no requirement to restrict VOIP)
Region Link 5: B - D (BlockVOIP BW Policy)
Region Link 6: C - D (BlockVOIP BW Policy)
New-CsNetworkRegionLink -NetworkRegionLinkID "A-D-LINK" -NetworkRegionID1 "A" -NetworkRegionID2 "D" -BWPolicyProfileID "BlockVOIP"
New-CsNetworkRegionLink -NetworkRegionLinkID "B-D-LINK" -NetworkRegionID1 "B" -NetworkRegionID2 "D" -BWPolicyProfileID "BlockVOIP"
New-CsNetworkRegionLink -NetworkRegionLinkID "C-D-LINK" -NetworkRegionID1 "C" -NetworkRegionID2 "D" -BWPolicyProfileID "BlockVOIP"
Apply a bandwidth policy only if the network region link is bandwidth-constrained and you want to use CAC to control media traffic on that link. It means I should not apply BW policy between
region A, B and C as I don't want to block VOIP between these regions.
New-CsNetworkRegionLink -NetworkRegionLinkID "A-B-LINK" -NetworkRegionID1 "A" -NetworkRegionID2 "B"
New-CsNetworkRegionLink -NetworkRegionLinkID "A-C-LINK" -NetworkRegionID1 "A" -NetworkRegionID2 "C"
New-CsNetworkRegionLink -NetworkRegionLinkID "B-C-LINK" -NetworkRegionID1 "B" -NetworkRegionID2 "C"
Region Routes
Region Route 1: A - B --> Region Link ( A - B)
Region Route 2: A - C --> Region Link ( A - C)
Region Route 3: A - D --> Region Link ( A - D)
Region Route 4: B - C --> Region Link ( B - C)
Region Route 5: B - D --> Region Link ( B - D)
Region Route 6: C - D --> Region Link ( C - D)
New-CsNetworkInterRegionRoute -Identity "A to B" -NetworkRegionID1 "A" -NetworkRegionID2 "B" -NetworkRegionLinkIDs "A-B-LINK"
New-CsNetworkInterRegionRoute -Identity "A to C" -NetworkRegionID1 "A" -NetworkRegionID2 "C" -NetworkRegionLinkIDs "A-C-LINK"
New-CsNetworkInterRegionRoute -Identity "A to D" -NetworkRegionID1 "A" -NetworkRegionID2 "D" -NetworkRegionLinkIDs "A-D-LINK"
New-CsNetworkInterRegionRoute -Identity "B to C" -NetworkRegionID1 "B" -NetworkRegionID2 "C" -NetworkRegionLinkIDs "B-C-LINK"
New-CsNetworkInterRegionRoute -Identity "B to D" -NetworkRegionID1 "B" -NetworkRegionID2 "D" -NetworkRegionLinkIDs "B-D-LINK"
New-CsNetworkInterRegionRoute -Identity "C to D" -NetworkRegionID1 "C" -NetworkRegionID2 "D" -NetworkRegionLinkIDs "C-D-LINK"
Enable CAC
Set-CsNetworkConfiguration -EnableBandwidthPolicyCheck 1
Voice Policy
Enable PSTN Reroute for users (sites) in Region D
Disable Enabled Bandwidth policy override for users (sites) in Region D
Any suggestion before I go for implementation? Am I missing anything here?
Cheers,
H.
