[Freeswitch-users] WiFi IP VOIP SIP phones

Sun May 5 21:10:15 MSD 2013

I've dealt with a similar situation. I work for a property management
company, and at one stage we were developing a strategy to basically resell
voip service to tenants. Each would have a phone and prepay for minutes. We
even tbought about having a kiosk to top up their account when needed by
credit card. They could also top up by paying a little extra on top of
their rent which would then be applied to their voip account.

We ended up not doing it. And here's why:

1. WiFi/DECT phones are too expensive to replace. They would get beat up or
lost. It's just too risky. On top of that, WiFi just isn't great at all for
real-time media such as voip. You could do some tweaking to mitigate some
of the issues, but it's still not worth it. Use DECT if you really want to
go down this route. You could rent the phones, but due to our clientele at
this property, it wasn't feasible.

2. We thought about using an FXS channel bank and running copper to every
room. It takes care of the lost phone issue, and the tenant would be
responsible for their phone because, well, they bought it. If the tenant
wouldn't have been able to afford it, we could have set them up on a
payment plan for a cordless phone. In total, we would have needed 16
channels, plus one for the office. Basically, a 24 port channel bank. They
are relatively inexpensive, especially considering the use of wifi/dect
phones. Unfortunately, there is not much in it if you want any sort of ROI.
It would take a few years to get it, and by that time you wouldn't be far
from replacing the equipment you originally installed. That's also being
optimistic, as that estimate would assume 70% occupancy.

Now there are several ways we could have pursued this further, but then the
Obamaphone came out and by then, there was no demand. So, I'm not saying it
will never work. It's just difficult and requires some major number
crunching to make sure you stay above water. If there were 50 units, that
would be a major help. But this property only has 16.

If you need some help, I'd be happy to, ping me off list. I spent six
months off and on studying the feasibility of such a venture. There's a lot
of things you need to be aware of, and you need to know your client's
habits.

-BDF

Sent from my Samsung Galaxy S4
 On May 5, 2013 12:36 PM, "Sean Devoy" <sdevoy at bizfocused.com> wrote:

> Thanks to everyone who answered.  I am dealing with a language barrier with
> this customer so bear with me.
>
> Now that I understand where these phones are actually going, I can refine
> my
> query.
>
> The basic concept is to change a boarding house with 12 rooms on a single
> analog line to VOIP with individual extensions.  6 of the rooms are wired
> or
> will be added easily.  The other 6 rooms cannot be wire but will have WiFi
> access.  It sounds like WiFi desk phones would be fine.  Single
> Line/Extension is good.
>
> So, can 6 WiFi/DECT phones on distinct bases coexist in the same radio
> range?
> Now I see Blake has already replied and the SNOM can have a single base
> with
> up to 10 non-shared extensions!  I guess that would be a strategically
> placed base and 6 charger/handsets.  I shall ready up on SNOM.
>
> Would WiFi dongles on Desk phones work better for this venue?
>
> Sean
>
> -----Original Message-----
> From: freeswitch-users-bounces at lists.freeswitch.org
> [mailto:freeswitch-users-bounces at lists.freeswitch.org] On Behalf Of
> Lawrence
> Conroy
> Sent: Sunday, May 05, 2013 9:05 AM
> To: FreeSWITCH Users Help
> Subject: Re: [Freeswitch-users] WiFi IP VOIP SIP phones
>
> Hi Folks,
>  +1 -- I use multiple Siemens S675IP DECT 'phones.
> Voice quality good (supports G722 and speakerphone is OK, unlike some),
> range is excellent, Battery life good, and they just work (assuming you
> don't drop them out of a pocket into the loo, which is how most of my
> company's DECT 'phones die).
>
> BTW, note that, for large campus sites, there's always something like
> <http://gigaset.com/pro/uk/en/pages/index.html>
> Their CAL pricing for what is a basic SIP server is laughable, but the DECT
> base stations and cellular controller are not too painful (i.e. it's a good
> fit with fS ;).
>
> I have to add; SNOM DECT 'phones are OK-good, Panys you either like or
> don't, but Polycom DECT phones are too toxic for landfill, IMHO.
>
> Problem I've seen with WIFi phones is battery life is not good, range is
> less than DECT, and I haven't seen a *really* new design for quite a while.
> Power is always going to be a problem, as WiFi Tx power is higher than
> DECT,
> and the link layer's more "chatty" on standby.
>
> all the best,
>   Lawrence
>
> On 5 May 2013, at 04:16, Mr Nathan Downes wrote:
>
> > I’ve used the Snom m3 and m9.. the Siemens c610ip and a510 are way
> > better in feel/call quality and cheaper, not tried any others yet
> >
> >
> >
> > From: freeswitch-users-bounces at lists.freeswitch.org
> > [mailto:freeswitch-users-bounces at lists.freeswitch.org] On Behalf Of
> > Luis Daniel Lucio Quiroz
> > Sent: Sunday, 5 May 2013 12:44 PM
> > To: FreeSWITCH Users Help
> > Subject: Re: [Freeswitch-users] WiFi IP VOIP SIP phones
> >
> >
> >
> > I use at home snom m9 without problems
> >
> > El may 4, 2013 4:28 p.m., "Blake Priddy" <bpriddy at bryantschools.org>
> > escribió:
> >
> > The SNOM DECT model is inexpensive and really good as well
> >
> > On May 4, 2013 3:23 PM, "Spencer Thomason"
> > <spencer at 5ninesolutions.com>
> > wrote:
> >
> > Not strictly WiFi but if a DECT SIP phone will suffice, the Panasonic
> > KX-TGP500s are great.
> >
> >
> >
> > -----Original message-----
> >
> > From: Sean Devoy <sdevoy at bizfocused.com>
> > To: FreeSWITCH-users at lists.freeswitch.org
> > Sent: Sat, May 4, 2013 19:56:55 GMT+00:00
> > Subject: [Freeswitch-users] WiFi IP VOIP SIP phones
> >
> >
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