[Freeswitch-users] WiFi IP VOIP SIP phones

Mon May 6 02:01:08 MSD 2013

Hi Sean,

I also did some tests with wireless phones.
In my opinion you should really forget about the WiFi stuff and go for DECT.
I never got a good voice quality and roaming between several (managed) access points was basically impossible when talking.
My tests were based on Linksys and Gigaset WiFi phones.
Not sure, but I think almost all WiFi SIP phones disappeared from the market (except some Android based smartphones which have a SIP client).

About the DECT phones I found out that the Gigaset Pro series was performing better than the Snom DECT phones.
I really love Snom phones, but their DECT products could never convince me.
One of my customers use now a N510 IP PRO base and some SL610H PRO handsets.
The spec says 6 phones and 4 lines.
If you need more you should have a look at the N720 which should be a multi cell DECT system (I've never used it).
But the website says 100 handsets, 20 base stations, overall 30 calls and 8 calls per base...

Hope that helps...
Klaus

Von: freeswitch-users-bounces at lists.freeswitch.org [mailto:freeswitch-users-bounces at lists.freeswitch.org] Im Auftrag von Brian Foster
Gesendet: Sonntag, 5. Mai 2013 19:10
An: FreeSWITCH Users Help
Betreff: Re: [Freeswitch-users] WiFi IP VOIP SIP phones

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<mailto: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>
[mailto: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>
> [mailto: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<mailto: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<mailto: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<mailto:sdevoy at bizfocused.com>>
> To: FreeSWITCH-users at lists.freeswitch.org<mailto: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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