Re: [asterisk-users] SIP hardware phones

2012-02-13 Thread Jason W. Parks
Thanks for the info. As we move forward, we'll be testing and making a 
phone selections. No doubt we'll run into this. Are you saying if the 
phone is stated to be a 10/100 phone, it still may not work at 10?




On 2/13/2012 1:32 AM, Benny Amorsen wrote:

Jason W. Parksjason.w.pa...@gmail.com  writes:


I can move my voice infrastructure to an IP-based one running 10Mbps,
utilize existing wiring infrastructure, with the only cost outlay
being low cost PoE managed switches (48 ports for about a grand), and
it ends up a lot cheaper than upgrading the data network to support
the phones. ...and I can still stay within standard.

You can, but not all phones will link up at 10Mbps.


/Benny

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Re: [asterisk-users] SIP hardware phones

2012-02-13 Thread Jason W. Parks
The existing infrastructure I'm speaking of is the existing voice 
infrastructure. It currently supports a digital PBX. No IP whatsoever, 
but the wiring is rated for 10BaseT. As we look to replace the digital 
PBX with VoIP, my options are to abandon that wiring and start using our 
data network, or upgrade our existing voice infrastructure to support 
VoIP. The numbers are showing It would be cost prohibitive to upgrade 
our existing data network to support VoIP.  ...and I think you've just 
supported one of my reasons for continuing to keep voice and data 
networks separate. Since the voice network will be completely and 
physically separate from any non-voice data, and all devices on that 
network are phones, it just became a lot less complicated.  ...and I'm 
only talking 10Mb between the phone and the switch. All switches would 
be interconnected either with 100 or 1000.   Thanks for the response.  Jason


Cheer up, the worst is yet to come.


On 2/13/2012 2:48 AM, Hans Witvliet wrote:

On Mon, 2012-02-13 at 09:32 +0100, Benny Amorsen wrote:

Jason W. Parksjason.w.pa...@gmail.com  writes:


I can move my voice infrastructure to an IP-based one running 10Mbps,
utilize existing wiring infrastructure, with the only cost outlay
being low cost PoE managed switches (48 ports for about a grand), and
it ends up a lot cheaper than upgrading the data network to support
the phones. ...and I can still stay within standard.

You can, but not all phones will link up at 10Mbps.


/Benny

--
_

Are you realy shure you want to do that?
I mean _existing_ infra (with probably a number of other (non-voip)
machines connected to it?

Even on a 100Mbps network, if one of the machines on the same network is
doing a rsync-job (no saturation), I notice a drop in voip-quality.

Adding voip to existing infra might work, if your network is good
enough, like Gb with enough unused bandwith and low latency. Or if you
can tell complaining users, that it is a temporary solution.

hw


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Re: [asterisk-users] SIP hardware phones

2012-02-13 Thread Bryant Zimmerman
Jason

A standard SIP VOIP phone will use less than 100k per voice call.  For 
example I have several bussiness customers that have a dedicated DSL line 
and they do up to 6 lines very well on that 1.5x384 (we do g729 which is 
37k per call). If your networks drops can test solid at 10mb you should be 
in good shape if they do not run solid at 100mb you should force the switch 
port to negoitate to 10mb not 100mb. Make sure the POE switches you are 
looking at allow you to force the port speed this may save you in the long 
run. Also make sure that the POE switch can handle the load and run lengths 
you are looking to put on it. 

Bryant


 BrFrom: Jason W. Parks jason.w.pa...@gmail.com
Sent: Monday, February 13, 2012 8:32 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion 
asterisk-users@lists.digium.com
Subject: Re: [asterisk-users] SIP hardware phones

Thanks for the info. As we move forward, we'll be testing and making a 
phone selections. No doubt we'll run into this. Are you saying if the 
phone is stated to be a 10/100 phone, it still may not work at 10?

On 2/13/2012 1:32 AM, Benny Amorsen wrote:
 Jason W. Parksjason.w.pa...@gmail.com  writes:

 I can move my voice infrastructure to an IP-based one running 10Mbps,
 utilize existing wiring infrastructure, with the only cost outlay
 being low cost PoE managed switches (48 ports for about a grand), and
 it ends up a lot cheaper than upgrading the data network to support
 the phones. ...and I can still stay within standard.
 You can, but not all phones will link up at 10Mbps.


 /Benny

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Re: [asterisk-users] SIP hardware phones

2012-02-13 Thread Jason Parks
Gotcha! That was my plan. I ran into that exact issue when I was
randomly speed testing a couple of the lines. The computer under test
immediately negotiated to 100Mb and ran just fine, but I know I'm
asking for trouble to keep it that way. I will be forcing all ports
down to 10.

...and thanks for the example. That's good information.

On 2/13/12, Bryant Zimmerman brya...@zktech.com wrote:
 Jason

 A standard SIP VOIP phone will use less than 100k per voice call.  For
 example I have several bussiness customers that have a dedicated DSL line
 and they do up to 6 lines very well on that 1.5x384 (we do g729 which is
 37k per call). If your networks drops can test solid at 10mb you should be
 in good shape if they do not run solid at 100mb you should force the switch
 port to negoitate to 10mb not 100mb. Make sure the POE switches you are
 looking at allow you to force the port speed this may save you in the long
 run. Also make sure that the POE switch can handle the load and run lengths
 you are looking to put on it.

 Bryant

 
  BrFrom: Jason W. Parks jason.w.pa...@gmail.com
 Sent: Monday, February 13, 2012 8:32 AM
 To: Asterisk Users Mailing List - Non-Commercial Discussion
 asterisk-users@lists.digium.com
 Subject: Re: [asterisk-users] SIP hardware phones

 Thanks for the info. As we move forward, we'll be testing and making a
 phone selections. No doubt we'll run into this. Are you saying if the
 phone is stated to be a 10/100 phone, it still may not work at 10?

 On 2/13/2012 1:32 AM, Benny Amorsen wrote:
 Jason W. Parksjason.w.pa...@gmail.com  writes:

 I can move my voice infrastructure to an IP-based one running 10Mbps,
 utilize existing wiring infrastructure, with the only cost outlay
 being low cost PoE managed switches (48 ports for about a grand), and
 it ends up a lot cheaper than upgrading the data network to support
 the phones. ...and I can still stay within standard.
 You can, but not all phones will link up at 10Mbps.


 /Benny

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Re: [asterisk-users] SIP hardware phones

2012-02-13 Thread Carlos Alvarez
On Mon, Feb 13, 2012 at 2:48 AM, Hans Witvliet aster...@a-domani.nl wrote:

 Even on a 100Mbps network, if one of the machines on the same network is
 doing a rsync-job (no saturation), I notice a drop in voip-quality.

That's because you don't know how to properly configure a network.
You could run 10m to saturation and still get good voice quality--if
you did it right.


-- 
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TelEvolve
602-889-3003

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Re: [asterisk-users] SIP hardware phones

2012-02-13 Thread Benny Amorsen
Jason W. Parks jason.w.pa...@gmail.com writes:

 Thanks for the info. As we move forward, we'll be testing and making a
 phone selections. No doubt we'll run into this. Are you saying if the
 phone is stated to be a 10/100 phone, it still may not work at 10?

I must admit it isn't something I have looked at particularly deeply. I
hav experienced that Snom 3xx phones have not linked up at 10Mbps a few
times and I have never seen them successfully achieve link at 10Mbps.
This could be a firmware issue or a general issue with the quality of
those 10Mbps networks. Or Snom simply does not allow their phones to
connect to a 10Mbps network.

In each case the network installations and switches were improved so
100Mbps worked without any problems.


/Benny

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Re: [asterisk-users] SIP hardware phones

2012-02-10 Thread Jason W. Parks
I'm in a similar situation. However, most of my buildings were re-wired 
around 1994 to provide Cat5 or 5E to the desktop for data, and 2-pair 
Cat3 for voice, all in a star topology. I can move my voice 
infrastructure to an IP-based one running 10Mbps, utilize existing 
wiring infrastructure, with the only cost outlay being low cost PoE 
managed switches (48 ports for about a grand), and it ends up a lot 
cheaper than upgrading the data network to support the phones. ...and I 
can still stay within standard.


Is this an option for you or are you still living with the remnants of 
an old key system or something like that?


The journey of a thousand miles begins with a broken fan belt and a flat tire.


On 2/8/2012 10:46 AM, Vieri wrote:

Let me answer that, Carlos. A big hospital.

These big infrastructures can be quite outdated and messy. Getting 
someone to cable old parts of the buildings can be very expensive. 
However, replacing just the backbone switches is something they can 
afford. And they don't need PoE, really.
What kind of applications benefit from gigabit speed? Well, plenty, 
such as MDs having to view a whole bunch of x-ray images of several 
patients, as fast as possible. Believe me, doctors aren't patient and 
Gbps makes a big difference.


So basically, that's your answer: these sites don't need PoE, just 
Gbps and can't afford cabling a huge old building. Now, they don't 
care for PoE on the hardphones either.


So in these cases, I think it's clearly justifiable to have a 
low-budget Digium D40 or Grandstream GXP280 with a 2-NIC Gbps switch.
Not a big deal anyway, because they can always add a mini 5 or 8-port 
gigiabit switch for around 20$ between the wall socket and the 
hardphone+PC, but that just adds another appliance to the doctor's 
office...



--- On *Wed, 2/8/12, Carlos Alvarez /car...@televolve.com/* wrote:


From: Carlos Alvarez car...@televolve.com
Subject: Re: [asterisk-users] SIP hardware phones
To: Asterisk Users Mailing List - Non-Commercial Discussion
asterisk-users@lists.digium.com
Date: Wednesday, February 8, 2012, 9:26 AM

If the customer is so cheap that they won't properly build out the
network, why would they have gigabit switches to the desktop which
have a limited set of applications that actually benefit from it?

Then there's PoE, which is expensive to start and very expensive
with gigabit.  So this mythical customer is too cheap to cable,
but will buy a gigabit switch of dubious value, will they buy a
PoE gigabit switch?  If not, why not buy a value-priced PoE 100m
switch which has a clear benefit instead of a low-end GB switch of
dubious value?

I just don't see the fit, and I'm guessing the vendors don't
either.  What is the exact network topology (brands/models) and
applications that justify GB to the desktop, don't justify
additional cabling, and how do you account for PoE in this
environment?

On Wed, Feb 8, 2012 at 7:13 AM, Vieri rentor...@yahoo.com
/mc/compose?to=rentor...@yahoo.com wrote:


--- On Wed, 2/8/12, Jason W. Parks jason.w.pa...@gmail.com
/mc/compose?to=jason.w.pa...@gmail.com wrote:

  From everything I've researched to
 date, my understanding is most
 locations have chosen to double their port density and
 continue to
 service the phone and computer on separate ports than to
 share a single
 line for both computer and phone. Reason primarily mentioned
 being
 troubleshooting concerns. If this is the case, the second
 port is not
 required, and become nothing but another gimmick to sell to
 you.

 Is this everyone else's experience as well?

Well, at some locations, for technical and mostly political
reasons, doubling port density so that the computer connects
to a separate port is too costly, way over what a 60$
hardphone can cost (eg. Grandstream GXP285). I'd be glad to
pay just a tad more for hundreds of basic hardphones, just
as long as they can do gigabit.

Vieri



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Re: [asterisk-users] SIP hardware phones

2012-02-10 Thread Olivier
2012/2/10, Jason W. Parks jason.w.pa...@gmail.com:
 I'm in a similar situation. However, most of my buildings were re-wired
 around 1994 to provide Cat5 or 5E to the desktop for data, and 2-pair
 Cat3 for voice, all in a star topology. I can move my voice
 infrastructure to an IP-based one running 10Mbps, utilize existing
 wiring infrastructure, with the only cost outlay being low cost PoE
 managed switches (48 ports for about a grand), and it ends up a lot
 cheaper than upgrading the data network to support the phones. ...and I
 can still stay within standard.

 Is this an option for you

Yes this is an option but the original question why no low-end
Gigabit phones on the market ?.
Try to find a PC motherboard with 10/100 interface. Now, it's Gigabit
for all, no matter if people need its speed or not. And both, IP
phones and PC motherboard are 100$ products.

What strikes me is that it's still not the case in 2012, for IP phones.
I can live with that but I'm still a bit surprised by this remaining
year after year.


 or are you still living with the remnants of
 an old key system or something like that?

 The journey of a thousand miles begins with a broken fan belt and a flat
 tire.


 On 2/8/2012 10:46 AM, Vieri wrote:
 Let me answer that, Carlos. A big hospital.

 These big infrastructures can be quite outdated and messy. Getting
 someone to cable old parts of the buildings can be very expensive.
 However, replacing just the backbone switches is something they can
 afford. And they don't need PoE, really.
 What kind of applications benefit from gigabit speed? Well, plenty,
 such as MDs having to view a whole bunch of x-ray images of several
 patients, as fast as possible. Believe me, doctors aren't patient and
 Gbps makes a big difference.

 So basically, that's your answer: these sites don't need PoE, just
 Gbps and can't afford cabling a huge old building. Now, they don't
 care for PoE on the hardphones either.

 So in these cases, I think it's clearly justifiable to have a
 low-budget Digium D40 or Grandstream GXP280 with a 2-NIC Gbps switch.
 Not a big deal anyway, because they can always add a mini 5 or 8-port
 gigiabit switch for around 20$ between the wall socket and the
 hardphone+PC, but that just adds another appliance to the doctor's
 office...


 --- On *Wed, 2/8/12, Carlos Alvarez /car...@televolve.com/* wrote:


 From: Carlos Alvarez car...@televolve.com
 Subject: Re: [asterisk-users] SIP hardware phones
 To: Asterisk Users Mailing List - Non-Commercial Discussion
 asterisk-users@lists.digium.com
 Date: Wednesday, February 8, 2012, 9:26 AM

 If the customer is so cheap that they won't properly build out the
 network, why would they have gigabit switches to the desktop which
 have a limited set of applications that actually benefit from it?

 Then there's PoE, which is expensive to start and very expensive
 with gigabit.  So this mythical customer is too cheap to cable,
 but will buy a gigabit switch of dubious value, will they buy a
 PoE gigabit switch?  If not, why not buy a value-priced PoE 100m
 switch which has a clear benefit instead of a low-end GB switch of
 dubious value?

 I just don't see the fit, and I'm guessing the vendors don't
 either.  What is the exact network topology (brands/models) and
 applications that justify GB to the desktop, don't justify
 additional cabling, and how do you account for PoE in this
 environment?

 On Wed, Feb 8, 2012 at 7:13 AM, Vieri rentor...@yahoo.com
 /mc/compose?to=rentor...@yahoo.com wrote:


 --- On Wed, 2/8/12, Jason W. Parks jason.w.pa...@gmail.com
 /mc/compose?to=jason.w.pa...@gmail.com wrote:

   From everything I've researched to
  date, my understanding is most
  locations have chosen to double their port density and
  continue to
  service the phone and computer on separate ports than to
  share a single
  line for both computer and phone. Reason primarily mentioned
  being
  troubleshooting concerns. If this is the case, the second
  port is not
  required, and become nothing but another gimmick to sell to
  you.
 
  Is this everyone else's experience as well?

 Well, at some locations, for technical and mostly political
 reasons, doubling port density so that the computer connects
 to a separate port is too costly, way over what a 60$
 hardphone can cost (eg. Grandstream GXP285). I'd be glad to
 pay just a tad more for hundreds of basic hardphones, just
 as long as they can do gigabit.

 Vieri



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 asterisk

Re: [asterisk-users] SIP hardware phones

2012-02-09 Thread Olivier
2012/2/8, Carlos Alvarez car...@televolve.com:
 If the customer is so cheap that they won't properly build out the network,
 why would they have gigabit switches to the desktop which have a limited
 set of applications that actually benefit from it?

 Then there's PoE, which is expensive to start and very expensive with
 gigabit.  So this mythical customer is too cheap to cable, but will buy a
 gigabit switch of dubious value, will they buy a PoE gigabit switch?  If
 not, why not buy a value-priced PoE 100m switch which has a clear benefit
 instead of a low-end GB switch of dubious value?

 I just don't see the fit, and I'm guessing the vendors don't either.

I disagree here : what if you're changing your telephony system this
year and you'll upgrade your network next year ? Would you buy high
end phones for everybody, just for that ?
Needing Gigabit to the desktop doesn't imply you a SIP phone with a
large or color screen.

I also visited locations like University campus in which a Cat5 is a
scarce resource.

Having low end Gigabit phones allow a more modular procurement, if I
may call it this way, and is a useful mean to protect investments.



  What
 is the exact network topology (brands/models) and applications that justify
 GB to the desktop, don't justify additional cabling, and how do you account
 for PoE in this environment?

 On Wed, Feb 8, 2012 at 7:13 AM, Vieri rentor...@yahoo.com wrote:


 --- On Wed, 2/8/12, Jason W. Parks jason.w.pa...@gmail.com wrote:

   From everything I've researched to
  date, my understanding is most
  locations have chosen to double their port density and
  continue to
  service the phone and computer on separate ports than to
  share a single
  line for both computer and phone. Reason primarily mentioned
  being
  troubleshooting concerns. If this is the case, the second
  port is not
  required, and become nothing but another gimmick to sell to
  you.
 
  Is this everyone else's experience as well?

 Well, at some locations, for technical and mostly political reasons,
 doubling port density so that the computer connects to a separate port is
 too costly, way over what a 60$ hardphone can cost (eg. Grandstream
 GXP285). I'd be glad to pay just a tad more for hundreds of basic
 hardphones, just as long as they can do gigabit.

 Vieri

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 --
 Carlos Alvarez
 TelEvolve
 602-889-3003


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Re: [asterisk-users] SIP hardware phones

2012-02-08 Thread Olivier
2012/2/8, Vieri rentor...@yahoo.com:
 I'm trying to understand why vendors keep making 100Mbps integrated 1-port
 switches in their hardware SIP phones. Even the recently-announced D40 and
 D50 Digium phones are limited to 100Mbps. Only the more expensive models
 (like the D70) can run at 1000Mbps.
 However, you can't expect a firm with hundreds of extensions to buy the most
 expensive model...
 And gigabit speed is important when sharing the network with a PC (because
 PC apps may require gigabit speed).

 The day will come when medium or low-budget hardphones will have integrated
 gigabit switches. But is it THAT expensive to put in 2 gigabit ports in a
 hardphone nowadays? Or is it just marketing?

I fully agree with your remarks and questions.

It seems to me that low-end phones are still designed today to compete
on price with analog phones as if a large share of decision makers
wouldn't pay a premium to benefit from VoIP features.

If people markets these low-end phones this way, I'm sure they must
have a reason for that but that doesn't change the fact that I'm still
a bit surprised this remains the norm these days.


 How much would it take for Digium to sell their D40 phones with gigabit
 ports?

 Vieri


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Re: [asterisk-users] SIP hardware phones

2012-02-08 Thread Carlos Alvarez
On Wed, Feb 8, 2012 at 8:12 AM, Patrick Lists 
asterisk-l...@puzzled.xs4all.nl wrote:


 Is this everyone else's experience as well?


 No the opposite. I have never heard of troubleshooting problems when using
 the switch on the phone. Maybe cheap crappy phones give you problems but I
 have never seen it with Polycom, Aastra, Snom or Cisco.
 Also you would need to have a second LAN port at each desk. I have come
 across only 2 places where that was the case and that's only because they
 had downsized freeing up LAN ports formerly belonging to the other desks in
 the room.


We primarily serve businesses with 5-60 phones.  We've found an even mix of:

Have two drops already (sometimes one is phone but is Cat 5 or better)
Have a single but willing/happy to add a second
Want to use a single with the phone's switch

I can only recall one customer who truly needed to have GB to the desktop.
 This company is running huge construction plan drawings all over the
network and there's a clear measurable improvement with GB.  They ran
additional drops for the phones.

A few others said they have GB to the desktop, so we told them to nail down
a few connections to 100m and then survey the users.  None of them could
tell the difference, as they were just using everyday office applications
where this doesn't matter.


-- 
Carlos Alvarez
TelEvolve
602-889-3003
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Re: [asterisk-users] SIP hardware phones

2012-02-08 Thread Vieri
Let me answer that, Carlos. A big hospital.

These big infrastructures can be quite outdated and messy. Getting someone to 
cable old parts of the buildings can be very expensive. However, replacing just 
the backbone switches is something they can afford. And they don't need PoE, 
really.
What kind of applications benefit from gigabit speed? Well, plenty, such as MDs 
having to view a whole bunch of x-ray images of several patients, as fast as 
possible. Believe me, doctors aren't patient and Gbps makes a big difference.

So basically, that's your answer: these sites don't need PoE, just Gbps and 
can't afford cabling a huge old building. Now, they don't care for PoE on the 
hardphones either.

So in these cases, I think it's clearly justifiable to have a low-budget Digium 
D40 or Grandstream GXP280 with a 2-NIC Gbps switch.
Not a big deal anyway, because they can always add a mini 5 or 8-port gigiabit 
switch for around 20$ between the wall socket and the hardphone+PC, but that 
just adds another appliance to the doctor's office...


--- On Wed, 2/8/12, Carlos Alvarez car...@televolve.com wrote:

From: Carlos Alvarez car...@televolve.com
Subject: Re: [asterisk-users] SIP hardware phones
To: Asterisk Users Mailing List - Non-Commercial Discussion 
asterisk-users@lists.digium.com
Date: Wednesday, February 8, 2012, 9:26 AM

If the customer is so cheap that they won't properly build out the network, why 
would they have gigabit switches to the desktop which have a limited set of 
applications that actually benefit from it?

Then there's PoE, which is expensive to start and very expensive with gigabit.  
So this mythical customer is too cheap to cable, but will buy a gigabit switch 
of dubious value, will they buy a PoE gigabit switch?  If not, why not buy a 
value-priced PoE 100m switch which has a clear benefit instead of a low-end GB 
switch of dubious value?

I just don't see the fit, and I'm guessing the vendors don't either.  What is 
the exact network topology (brands/models) and applications that justify GB to 
the desktop, don't justify additional cabling, and how do you account for PoE 
in this environment?


On Wed, Feb 8, 2012 at 7:13 AM, Vieri rentor...@yahoo.com wrote:



--- On Wed, 2/8/12, Jason W. Parks jason.w.pa...@gmail.com wrote:



  From everything I've researched to

 date, my understanding is most

 locations have chosen to double their port density and

 continue to

 service the phone and computer on separate ports than to

 share a single

 line for both computer and phone. Reason primarily mentioned

 being

 troubleshooting concerns. If this is the case, the second

 port is not

 required, and become nothing but another gimmick to sell to

 you.



 Is this everyone else's experience as well?



Well, at some locations, for technical and mostly political reasons, doubling 
port density so that the computer connects to a separate port is too costly, 
way over what a 60$ hardphone can cost (eg. Grandstream GXP285). I'd be glad to 
pay just a tad more for hundreds of basic hardphones, just as long as they 
can do gigabit.




Vieri--
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