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  • Shoretel over VPN

    Okay, we are about to order:
    (2) Netgear FVS318 VPN Routers
    (2) Tranzeo TR-5plus wireless antennas

    We are connecting our Shoretel system in San Antonio to a small location in Kerrville. The remote location will have DSL installed in a room about 1/2 mile away from the building location. We are going to try to use the Tranzeo antennas to establish a connection between the building location and DSL drop. Assuming that works, we are going to try to establish a VPN link to our San Antonio network. I am currently taking bets on whether or not this will work. Please PM me for details. LOL! Seriously, though, I am waiting on a call from a Windstream engineer, but they are saying the max uplink on the DSL might be 384k. Will that be enough to establish a VPN link for two Shoretel phones? If not, what about 768k (that would be the max that Windstream would be able to provide, if its even available at that location).

  • #2
    I don't know about this. DSL and VoIP is shotty at best, even at 768k. You will add about 75k to the stream for your tunnel, add 32kb for the RTP stream, and you have a 100kb Audio stream. This doesn't include TMS, and other minor things going on. It just takes one person checking email to kill it @ 386k on a VPN.

    My bet is this: You will get it to work either way, but call quality will be krappy on 386k, and will be bearable at 786k, even with just 2 phones.

    but hey...try it out and let us know.

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    • #3
      Are these domestic grade DSL links? I know you guys are spoiled with bandwidth in the USA but I still don't think this setup will cut it for voice. I'd be curious what you ping times end up being.

      My bet, if you do get a decent call going you won't be able to guarantee it everytime due to contention and jitter. I'd have more confidence if you were putting in private network tails, even 512k ones.

      Like Charles, I'm curious about the result. Good luck!

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      • #4
        I am going to try to get us the best connection available, but whatever we get will be limited due to the remote geographical location.

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        • #5
          DSl

          What about getting 2 DSL connections, one for voice and one for data.

          It may give you a fighting chance anyway.

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          • #6
            Originally posted by eazeaz View Post
            What about getting 2 DSL connections, one for voice and one for data.

            It may give you a fighting chance anyway.
            MLDSL? (Multi link DSL) <-does this even exist??

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            • #7
              Been running multiple VPN connections with max uplink speed of 512k & 384k. My home office VPN connection has a max upstream speed of 384Kbps. I have been doing conference calls with up to (3) parties with no problem.

              I have a manufacturing plant with (2) phones coming in via a 512Kbps and data over the same link. This ran fine until things started growing. I then logically split the data(Vlan2) from the voice(Vlan1) in the Ethernet switch and ordered a second DSL line for the voice traffic. For the cost of $25 per month for the second DSL line it was a cheap way to preserve quality without sacrificing data throughput performance. I now have two VPN tunnels terminating on my corporate Sonicwall from the manufacturing plant (voice/data). So far no problems.

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