Verizon Gold Car Service: How to estimate level of Service? 1

[Boulevard99]

Hi all,

I was part of an email string where the parties were discussing the level of Verizon Gold Car Service.

For a team of 25-30 users, the requested was: 'MPLS circuits should indicate Gold Car value of 2 Mbps.'

In reading the string, I never understood the method by which a service level vs user count or distance between core site and branch location is Estimated. Is there some type of rule of thumb calculation to go by to make this determination?

So, a Gold Car Value of 2Mbps for 25-30 users is determined, how?

 

[joe2938]

And just what does this have to do with CM?

 

[Boulevard99]

Well, in determining the requirements for qos in a site that will be voip, i can only assume that there’s a measurement factor to address to make sure the users onsite have enough bandwidth for concurrent calls over an mpls circuit.

My question is coming from seeing the discussion I was witnessing in progress, and wanted to know How that is calculated? I had hoped someone here may have dealt with that in their experience. Rather than just say: “Ask the network guys..”

So far, I haven’t found any cheat sheets or posts to determine that online.

 

[kyle555]

For simplicity, math 1 call=100kbps, 10 calls/1meg WAN. General admin users you can calculate as on the phone 10% of the day, so 1Mbps=10 calls=100 users. I suppose that level for you means just about everyone can be on the phone.

 

[Boulevard99]

Thank you very much!! That’s perfect!!

Very much Appreciated!!

 

[mattKnight]

Most Gold CAR (DSCP Marking EF) is policed at the provider's PE. This means that the 21st call (i.e. 20 x 100kbps is within 2mbps but 21 x100 is not) will mean that the PE will drop EF marked packets until the bit rate is below the CAR. This means 20 calls will be fine 21+ will disrupt *all* calls not just the 21st. This is where Call admission control comes into play (is it better to protect the 20calls at the cost of denying the 21st?)

Take Care

Matt
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