[Asterisk-Users] What business IP phone to use

[Watkins, Bradley]

It must be microseconds that is being quoted, as even the 2626 that you
mention lists a less than 13.3 microsecond latency.

- Brad

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of David Ankers
Sent: Thursday, February 23, 2006 6:54 PM
To: 'Asterisk Users Mailing List - Non-Commercial Discussion'
Subject: RE: [Asterisk-Users] What business IP phone to use


Are you sure those switch figures are right? 16ms delay in the switch path
sounds a bit long. Cisco's mid-range switches like the 2950 have switching
times measured in micro seconds. Then again a 2626 procurve is only around
$700.


-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Conrad Wood
Sent: Friday, 24 February 2006 7:50 AM
To: asterisk-users at lists.digium.com
Subject: RE: [Asterisk-Users] What business IP phone to use


> Simple formula:
> 
> 1. Total Revenue
> 2. % of revenue derived from phone usage
> 3. =Cost of downtime by using SoHo or consumer gear.
> 
> It's not a question of if a SoHo or low cost device will screw up, it 
> is a question of when. This is 23 years of experience talking.
> 
> Where I work, the value of #3 above is $16 Cdn a *second*. We are 
> below
500
> employees, so we fall into the SMB segment. Sometimes I'm appalled by 
> statements that a $700 switch or a $400 phone isn't worth it. Huh?? 
> Maybe
in

Absolutely right! for something as critical as switches & cabling I always
recommend to spend real money. Don't ever try to save money any equipment
that is required to operate the business. (Had very good experience with HP
procurves over the last 10 years or so). There is no point buying netgear or
other low-cost switches for a business ever. The cost saving of being able
to pin-point a cabling/NIC/bandwidth problem down to the port on the switch
easily and quickly is wonderful. Combined with SNMP and all the other
goodies good switches come with, our clients save a lot of money by paying
me less for my time ( d'oh ;-) ). The difference can also cause unnecessary
delays and therefor echo in the path. For example, procurve switches
typically have 13ms switching time, the high-end netgears about 21ms. As
soon as you stack a couple of switches you are talking 26ms vs 42ms extra
delay in the path!

I see no reason however to spend $400 on a single phone though, because if a
single phone breaks, it's not going to bring your business to a standstill,
is it? (I guess unless you only have one in the first place ;-) )

conrad


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