[Asterisk-Users] LAN switches with PoE? PoE phones?

Ray Burkholder ray at oneunified.net
Sun Aug 17 11:09:07 MST 2003


To follow up on this, the Cisco Switches and the Cisco phones will work
together to create two vlans:  a prioritized vlan for the phone traffic,
and a secondary 10/100 link for a computer which can be attached to the
phone's second switched ethernet port.  Some config is needed in the
switch and router to make this happen properly.  I have it running well
with 79x0 phones, 3550 switch, and 1751-V router.

What this means is only one switch port is needed to run both a phone
and a computer.  This helps on the switch/phone ROI calcs.

The PoE can also be used to power wireless access points.

Ray Burkholder
519 570 0689 x2002


> -----Original Message-----
> From: asterisk-users-admin at lists.digium.com 
> [mailto:asterisk-users-admin at lists.digium.com] On Behalf Of John Brown
> Sent: August 17, 2003 13:52
> To: asterisk-users at lists.digium.com
> Subject: Re: [Asterisk-Users] LAN switches with PoE? PoE phones?
> 
> 
> Hi Mike,
> 
> Cisco makes PoE switches, either at the Cat 29xx or
> the Cat 35xx levels.  The 29xx don't have gige uplinks, but
> the 35xx's do via GBIC interfaces.  Meaning you will also need
> to get a GBIC media converter depending the media type (copper
> fiber, etc)
> 
> And of course Cisco makes PoE based phones 7940 7960
> which work well with *
> 
> Grandstream currently requires a wall-wart, but later
> models are suppose to use PoE as well.
> 
> I'd personally put the phones on their own subnet so that
> ACL filtering at the router will be easier, static IP alloc
> will be easier.
> 
> hope this helps
> 
> john brown
> chagres technologies, inc
> sip: 50870 at fwd
> ptsn: (01) 505 830 1200 USA
> 
> 
> 
> On Sun, Aug 17, 2003 at 12:44:43PM -0500, Mike Ciholas wrote:
> > 
> > Hi all,
> > 
> > I'm looking for recommendations on ethernet switches for a new
> > install.  Ideally would want switches with at least 24 ports,
> > ideally with a GE uplink, and that support PoE (power over
> > ethernet) on every port.  I've seen lots of switches, and lots of
> > "power hubs", but the combination, which makes a lot of sense,
> > seems rare.  What is out there?  Do the switches need to be 
> > special for IP phones in anyway?  QoS support?  Managed?
> > 
> > Also, are there PoE phones that work with *?  Most I look at seem 
> > to be powered from AC wall blocks.  We'd like to centralize the 
> > switching and power and provide a UPS so the phone system works 
> > when the power goes out.
> > 
> > [Apologies, I'm new to this whole concept of IP phones and *.]
> > 
> > -- 
> > Mike Ciholas                            (812) 476-2721 voice
> > CIHOLAS Enterprises                     (812) 476-2881 fax
> > 2626 Kotter Ave, Unit D                 mikec at ciholas.com
> > Evansville, IN 47715                    http://www.ciholas.com
> > 
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