However, there are vendors that have pre-spec (before 2003) Switches that MAY NOT follow the spec.
There are also (2) differant types of PoE Sourcing Switches.
End-Span and Mid-Span
Mid-Span sits between the IP phone that needs powers and the Data Switch that connects to the network. The Mid-Span ONLY supplies power to the IP Phone and thus requires the addition of an Ethernet Sitch or Hub to provide the connectivity to the network.
End-Span devices incorporate the Power Sourcing capabilities of the mid-Span and the Ethernet connectivity of a Switch.
Now it gets tricky. As I understand the spec, and from my own experience, a PoE Switch can source power over pins 1,2,3, and 6 as well as Ethernet connectivity OR it can source PoE over the unused pins 4,5,7 and 8 BUT it does not have to do both.
On the other hand, a 802.3af compliant PoE device (IP phone, Wireless AP, Surveilance Camera)must be able to detect the FLPs on either of the (4) pairs and then source according to what the PoE Switch is sending.
Yes, a PoE Switch can toast a NIC/PCMCIA card if the PoE Switch is a Mid-Span device or power Injector (I don't believe these device are capable of detecting the capabilities of a Powered Device and thus they just source power down the designated Rx pairs - someone correct me if I'm wrong).
I would look at the product Data Sheet for your phone and find out how it handles sourced power and if it's 802.3af IEEE spec compliant.
Look at the PoE Swtich options Cisco, 3Com, Netgear, Asante, HP etc. I know from experience that Cisco is a great solution if you have a big budget for a Cat 3550. 3Com is Spec compliant and provides Power over pins 1,2,3 and 6 ONLY. Netgear is the least expensive solution, but with my experience it's hard to get support if you have problems with their product, unless you purchase a Service Contract (warranty support only entitles you to speak to 1st level Tech who can answer basic questions)
Hope some of this helped.
Sean
tOn Tue, 19 Apr 2005 17:32:00 +1000, Paul Hales <[EMAIL PROTECTED]> wrote:
Snom 200's & Polycom 600's.
Polycom 500's with the special lead.
Later,
PaulH
-----Original Message----- From: Kristof Hardy [mailto:[EMAIL PROTECTED] Sent: Tuesday, 19 April 2005 5:05 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Cc: [EMAIL PROTECTED] Subject: Re: [Asterisk-Users] Asterisk & POE
Paul Hales wrote:From our experience (with a HP 2626-PWR) it hasn't been an issue.PaulH
Paul,
Would you like to share wich phones you're using on this switch?
Cheers,
Kristof.
CAUTION: This email message and accompanying data may contain information that is confidential. If you are not the intended recipient, you are notified that any use, dissemination, distribution or copying of this message or data is prohibited. If you have received this email message in error, please notify us immediately and erase all copies of this message and attachments. Thank you.
CAUTION: This email message and accompanying data may contain information that is confidential. If you are not the intended recipient, you are notified that any use, dissemination, distribution or copying of this message or data is prohibited. If you have received this email message in error, please notify us immediately and erase all copies of this message and attachments. Thank you.
_______________________________________________
Asterisk-Users mailing list
Asterisk-Users@lists.digium.com
http://lists.digium.com/mailman/listinfo/asterisk-users
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users
-- http://www.1and1.com/?k_id=8358073
_______________________________________________ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
