[asterisk-biz] Paranoia, Dell & 3COM

Bob Pierce pierceb at westmancom.com
Mon Feb 4 10:29:42 CST 2008


We are using Dell PowerConnect 3448P for voice&data switches with qos
and separate vlans for data and voice.

Bob

On Mon, 2008-02-04 at 09:55 -0500, John Williams wrote:
> Bob,
> What are you using for a LAN switch?
> Thanks!
> 
>  
> On Feb 4, 2008 9:24 AM, Bob Pierce <pierceb at westmancom.com> wrote:
>         We are using a Dell 2950 with 2 Dual core 2GHz CPU, 2GB Ram
>         and a
>         Sangoma A104d-x quad T1/E1 card (which now seems to be called
>         the A104DE
>         on Sangoma's site). Using this system we are currently
>         handling 82 users
>         quite easily. We have had at least 23 concurrent calls on a
>         few
>         occasions with no problems. I'm pretty sure it could handle 48
>         concurrent calls as the load on this box averages around 0.11
>         and peaks
>         to about 0.4
>         
>         --
>         Bob Pierce
>         Network Analyst
>         Westman Communications Group
>         
>         
>         On Mon, 2008-02-04 at 09:04 -0500, John Williams wrote:
>         > Thanks for that wisdom, Bob.   For this current job, we have
>         the
>         > luxury of running a separate network for voice, and can put
>         aside QOS
>         > (for now).
>         >
>         > Being completely paranoid,  I want to buy equipment (switch
>         &
>         > PC) proven to operate an *  PBX for 50-90 users and 48
>         concurrent
>         > calls.
>         >
>         > --  Dell is our preferred PC vendor.  Can anyone recommend,
>         based on
>         > actual experience, a Dell PC model for *, and 48 concurrent
>         calls?
>         > (The Dell recommended models on the Wiki are out of date)
>         >
>         > --  3COM is our preferred basic switch vendor.  Can anyone
>         recommend,
>         > based on actual experience, a 3COM switch model for *, and
>         48
>         > concurrent calls?
>         >
>         > Thanks in advance for aiding my considerable paranoia!
>         >
>         >
>         > On Feb 3, 2008 5:46 PM, bob murphy <springsource at gmail.com>
>         wrote:
>         >         Once you start adding L3 to even L6 and 7 services
>         the party
>         >         gets smaller and more expensive.  At the point you
>         are
>         >         building a network that requires QOS, Priority, Per
>         port
>         >         VLAN's etc you may as well build with service
>         provider class
>         >         switching gear like Foundry and Cisco etc.  It will
>         help us
>         >         all by eliminating complaints about "VOIP and
>         Asterisk" being
>         >         not ready for prime deployment due to maturity
>         issues when in
>         >         reality, it works fine on a well designed and
>         constructed
>         >         network.  Most of the time the Telephony system
>         get's blamed
>         >         for what is actually a poorly designed network.
>          "Low cost"
>         >         and "Business grade" may not coexist yet.  So just
>         bite the
>         >         bullet and use Foundry or Cisco.  We have deployed a
>         couple
>         >         systems with over 400 IP voice endpoints and things
>         are lookin
>         >         good because of the proper L3 and QOS functionality
>         that was
>         >         properly designed in to the final solution.
>         >
>         >         Or, with cheap MAC switching you can just run
>         seperate
>         >         networks.  I mean, why complicate things by
>         converging voice
>         >         and data.  With L2 switching equipment so cheap.
>          But you'll
>         >         have to run two cat6 drops everywhere.  It's a trade
>         off.  We
>         >         have done it both ways.
>         >
>         >         Bob
>         >         Arreva Communications
>         >
>         >
>         >         On 2/3/08, John Williams <jw.ip.pbx at gmail.com>
>         wrote:
>         >                 Deal List,  Who are the low cost QOS LAN
>         switch
>         >                 vendors with products supported by * for
>         business
>         >                 grade voice service?  Thanks
>         >
>         >
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>         >
>         >
>         >         --
>         >         Bob Murphy
>         >         Principal
>         >
>         >
>         >         Arreva Communications
>         >         www.arrevausa.com
>         >
>         >         949-334-2022-SIP Connect
>         >         949-842-8450-Wireless
>         >         949-349-0209-Fax
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