I'm considering using a PoE switch like this... http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3023334&CatId=2800 ...to power as many as 24 Polycom phones of varied kinds. The sales lit indicates >190 watts available for PoE devices. But I'm concerned about a problem someone reported elsewhere... They said... ---------------------------------------------------------------------------------------- Is there a reason that Polycom phones do not support PoE classes? We ran into a scenario recently where we could only power 11 Polycom 550's on a 24 port switch. This is because the Polycoms do not announce themselves as being in a specific PoE class, even though the phones only need 6W the switch assumes they need as much power as possible and allocates 14.5W to each port. We have had to resort to running unsupported firmware on the switch to get it to power 24 phones. ---------------------------------------------------------------------------------------- Does anybody here have insight about this? -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20080605/9656fc72/attachment.htm -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/x-pkcs7-signature Size: 3221 bytes Desc: S/MIME Cryptographic Signature Url : http://lists.digium.com/pipermail/asterisk-users/attachments/20080605/9656fc72/attachment.bin
On Jun 5, 2008, at 5:08 PM, Bill Michaelson wrote:> > I'm considering using a PoE switch like this... > > http://www.tigerdirect.com/applications/SearchTools/item- > details.asp?EdpNo=3023334&CatId=2800 > > ...to power as many as 24 Polycom phones of varied kinds. > > The sales lit indicates >190 watts available for PoE devices. But > I'm concerned about a problem someone reported elsewhere... > > They said... > ---------------------------------------------------------------------- > ------------------ > Is there a reason that Polycom phones do not support PoE classes? > We ran into a scenario recently where we could only power 11 > Polycom 550's on a 24 port switch. > > This is because the Polycoms do not announce themselves as being in > a specific PoE class, even though the phones only need 6W the > switch assumes they need as much power as possible and allocates > 14.5W to each port. We have had to resort to running unsupported > firmware on the switch to get it to power 24 phones. > ---------------------------------------------------------------------- > ------------------ > > Does anybody here have insight about this? > >have used many fsm7326p to power 24 phones or 726tp to power 12 phones and they work great
> Does anybody here have insight about this?We use the FS728TP in our network and the Polycom happily pulls around 6.5 watts. We haven't had any issue with them thus far and they have been in place about 15 months so far. John -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20080606/8401468c/attachment.htm
> have used many fsm7326p to power 24 phones or 726tp to power 12 > phones and they work greatOn the Linksys side, we have a load of SRW-224P switches out in the wild powering 24 Snom 370s (around 7W each) off each switch. Regards, Chris
Chris Bagnall wrote:>> have used many fsm7326p to power 24 phones or 726tp to power 12 >> phones and they work great >> > > On the Linksys side, we have a load of SRW-224P switches out in the wild powering 24 Snom 370s (around 7W each) off each switch. > > >Likewise, we sell these things by the bucket load and have no problems powering phones from all 24 ports.
On Jun 7, 2008, at 9:51 AM, Rob Hillis wrote:>> On the Linksys side, we have a load of SRW-224P switches out in >> the wild powering 24 Snom 370s (around 7W each) off each switch. >> >> >> > > Likewise, we sell these things by the bucket load and have no problems > powering phones from all 24 ports.Just curious - have these ever gotten quieter? We installed one when they first came out and it was WAY to loud for an office environment, data center would be OK.