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hawat.thufir at gmail.com
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hmcgregor at biggeeks.org
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hawat.thufir at gmail.com
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 Posted: Mon Feb 23, 2015 10:14 am Post subject: [asterisk-users] [OT] switches |
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On Fri, 20 Feb 2015 13:05:56 -0700, Harry McGregor wrote:
| Quote: | For a very basic setup it would work, but I would suggest POE at a
minimum, and vlan support if possible.
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thanks for the recomendations 
-Thufir
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bertrand.lupart at lin...
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| Posted: Mon Feb 23, 2015 10:22 am Post subject: [asterisk-users] [OT] switches |
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Hello,
| Quote: | Pardon, this might be off-topic. I'm reading:
http://en.wikipedia.org/wiki/Network_switch
For a setup of ~5 agents, would I be wrong in thinking that a generic 16
port unmanaged switch would fit the bill?
The first model to come up for me in an Amazon search is:
http://support.netgear.com/product/fs116
Is this a reasonable choice? Would I be wrong in thinking that most any
Fast Ethernet switch would be fine for Asterisk?
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Yes, this kind of switches would work.
VLAN and PoE support would obviously be better for convenience and security, but those are not mandatory.
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Bertrand LUPART
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hawat.thufir at gmail.com
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| Posted: Tue Feb 24, 2015 11:30 pm Post subject: [asterisk-users] [OT] switches |
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On Fri, 20 Feb 2015 13:05:56 -0700, Harry McGregor wrote:
B00AUEYX0Y/ref=sr_1_3?ie=UTF8&qid=1424462577&sr=8-3&keywords=netgear+poe
| Quote: |
and
Gigabit all ports
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Hypothetical: lag, choppy connection, dropped calls. Of course, I'd
start with checking logs. How would I establish that the problem is that
(some) of the ports aren't gigabit?
Small office, about five agents.
thanks,
Thufir
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hmcgregor at biggeeks.org
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| Posted: Wed Feb 25, 2015 2:19 am Post subject: [asterisk-users] [OT] switches |
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On 02/24/2015 09:30 PM, Thufir wrote:
| Quote: | On Fri, 20 Feb 2015 13:05:56 -0700, Harry McGregor wrote:
B00AUEYX0Y/ref=sr_1_3?ie=UTF8&qid=1424462577&sr=8-3&keywords=netgear+poe
| Quote: | and
Gigabit all ports
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Hypothetical: lag, choppy connection, dropped calls. Of course, I'd
start with checking logs. How would I establish that the problem is that
(some) of the ports aren't gigabit?
Small office, about five agents.
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If your only running the phone on the port, there is no need for GigE to
the phone, and many phones only support 100Mbit.
If your running phones with built in switches, a computer off the phone,
and the phone supports GigE, the GigE will help keep the computer from
overloading the total available bandwidth, but that is a very low chance
of being an issue to start with.
GigE all ports vs GigE for your server, and 100Mbit for your phones
really is not a major difference, but the price difference between the
two is also very small now days, and you are buying equipment with a
reasonable service life (3-8 years in my opinion), so it's a balance
between a few extra $ now, or waiting and seeing if you want it in the
future, and paying some amount of money to swap it out.
Most of the deployments I have done are with 100Mbit POE to the phones,
and GigE for uplinks between switches and to the Asterisk server(s)
-Harry
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bertrand.lupart at lin...
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| Posted: Wed Feb 25, 2015 3:36 am Post subject: [asterisk-users] [OT] switches |
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| Quote: | Hypothetical: lag, choppy connection, dropped calls. Of course, I'd
start with checking logs. How would I establish that the problem is that
(some) of the ports aren't gigabit?
Small office, about five agents.
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Had to run some small offices with SIP hardphones and basic switches. Unless you are doing things wrong (network loops…), your switch shouldn't be an issue for such a small network. Depending on the voice codec you use, a VoIP conversation if a few kB/s, so don't be obsessed with GigE.
Some hardphones have an integrated switch. Don't daisy chain phones this way, and be careful not to invert LAN and PC port.
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Bertrand LUPART
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asterisk_list at earth...
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| Posted: Wed Feb 25, 2015 8:28 am Post subject: [asterisk-users] [OT] switches |
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On Wednesday 25 Feb 2015, Thufir wrote:
| Quote: | On Fri, 20 Feb 2015 13:05:56 -0700, Harry McGregor wrote:
Hypothetical: lag, choppy connection, dropped calls. Of course, I'd
start with checking logs. How would I establish that the problem is that
(some) of the ports aren't gigabit?
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Any port with a hardware SIP phone plugged into it almost certainly won't be gigabit Anyway, an uncompressed (A-law or micro-law) voice connection is only using 64 000 bits per second. Compressed formats use even less bandwidth. The SIP signalling adds a bit of an overhead, but not much. That's probably why most SIP phones have only 100 or even 10 meg ports.
| Quote: | Small office, about five agents.
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To be honest, you'll probably be fine with a Ł9.99, 8-port TP-link switch -- but then you'll need power packs on all your phones (we power ours this way, and find it helps to reinforce the concept of the phones being unlike analogue POTS phones). There will already be mains there for the computers and monitors.
If you want a PoE switch specifically to remove the need for a power pack on each phone, just add up your requirements for power and ports; double them, to allow for the future; then find switches that meet these minimum requirements, and buy the cheapest-but-one.
The limiting factor with a switch carrying IP telephony traffic is not bandwidth, but routing table entries; and even cheap switches nowadays will usually take 1024 entries, if not 4096.
--
AJS
Note: Originating address only accepts e-mail from list! If replying off-list, change address to asterisk1list at earthshod dot co dot uk . |
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asterisk.org at sedwar...
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| Posted: Wed Feb 25, 2015 10:30 am Post subject: [asterisk-users] [OT] switches |
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On Wed, 25 Feb 2015, A J Stiles wrote:
| Quote: | The limiting factor with a switch carrying IP telephony traffic is not
bandwidth, but routing table entries; and even cheap switches nowadays
will usually take 1024 entries, if not 4096.
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Are you referring to the MAC CAM table? Saying 'routing table' and
'switch' in the same sentence seems confusing.
Do VOIP devices take more table entries than other Ethernet devices? I.e.
more than 1?
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Thanks in advance,
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Steve Edwards sedwards@sedwards.com Voice: +1-760-468-3867 PST
Newline Fax: +1-760-731-3000
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jeff at jeff.net
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| Posted: Wed Feb 25, 2015 10:33 am Post subject: [asterisk-users] [OT] switches |
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On 02/25/2015 09:28 AM, Steve Edwards wrote:
| Quote: | On Wed, 25 Feb 2015, A J Stiles wrote:
| Quote: | The limiting factor with a switch carrying IP telephony traffic is
not bandwidth, but routing table entries; and even cheap switches
nowadays will usually take 1024 entries, if not 4096.
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Are you referring to the MAC CAM table? Saying 'routing table' and
'switch' in the same sentence seems confusing.
Do VOIP devices take more table entries than other Ethernet devices?
I.e. more than 1?
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No, and if you have 1024 MAC addresses behind a "cheap" switch, you get
what you deserve.
j
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