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QoS on a Router / Switch

Discussion in 'Electronic Design' started by mpm, Nov 22, 2012.

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  1. mpm

    mpm Guest

    Please excuse if off-topic, but I figured you guys would know.
    I'm setting up a new office, 4 employees, + 2 more who will come and go randomly with laptops. There will also be the occasional visitor who may wishto connect wirelessly. This is not a call center sweatshop. Here's what I want:

    I want the option to do VoIP (Skype, SIP phones, FreePBX, etc..) and NOT have to worry about garbled audio when (perhaps?) network resources are in high demand.

    The technology is bewildering to the uninitiated: ToS, QoS, QoE, 802.1p, etc... WTF?

    Current plan is to feed a Netgear 24-port switch (JGS5214 Prosafe Gigabit Ethernet) with a 24MB U-Verse circuit. For the convenience of the occasional visitor or outside employee, we'll also deploy a Netgear N900 (WNDR4500).That said, none of the SIP phones or other permanent office gear (printers, etc..) will connect wirelessly - they will instead hardwire over to the aforementioned 24-port ProSafe Gigabit Ethernet switch.

    So, my question is: Can we reasonably expect good voice over this setup, or should we do something different?

    We can port the inbound 888# if needed, but I believe the back end of our existing VoIP server is fairly robust. And I don't mind over-provisioning the local circuit - I just don't want to have to deal with crap audio ever again.

  2. Guest

    Hello Sir,
    VOIP can be set up in a number of ways. A simple way would be to
    use Google Talk -- allows real-time conversation between US and
    Asia. Or one could use a Brekeke VOIP server and then use an
    softphone on any PC, configured to use that VOIP server. Skype
    is definitely an option, and does not require and Brekeke server
    configuration. So, one might start with a simple solution and
    then refine the system.
  3. miso

    miso Guest

    Newegg lists the switch is unmanaged, so I don't see how it is relevant.
    [I find netgear products to be flaky.]

    QOS (well at least with DD-WRT can be a port range, ip range (net range,
    or a specific MAC address. It seems to me all you can do is spec a port
    range in your situation since all the ip addresses are essentially peers.

    If you want to through some money at this, you can put all the SIP
    phones on their own lan, then have the router QOS that ip range (net
    range). I've eyeballed the dedicated lan for SIP in businesses, but
    don't know for a fact if they use QOS or just provide a separate line.
    [Like I'm going to track down the IT guy and ask.] With enough users,
    the lan segregation isn't that big of a deal, considering what employees
  4. Ralph Barone

    Ralph Barone Guest

    You do realize that you are not answering the question that was asked.
  5. Get a managed switch, this way you can adjust the speed per port. If you
    have multiple IP's available the you can split the network and with a
    good Qos router you can control the bandwidth in each segment.

  6. miso

    miso Guest

    Hey, I only report what I see. Basically SIP phones with their own

    I haven't seen it on the left coast but I was in Wally World where all
    the phones were SIPs.
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