[Asterisk-Dev] Where to get 48 volt Power Supplies for Cisco IP Phones

[Michiel Betel]

Terence Parker wrote:

>Just out of interest - what happens when you plug a POE enabled switch into
>a non-POE IP phone, as some of our are? Would this fry the phone? I also
>assume that a POE switch costs quite a bit more than a standard switch?
>
>  
>
We (probably) fried the ethernet port a SNOM 220 which is 48V AND POE 
enabled by powering it it from a CISCO POE switch..... All non POE 
phones work fine...
It seems there are 4!!! standards for POE which are not compatible:
• IEEE standardized Power over Ethernet IEEE 802.3af (snom220, snom200)
• Non standard capacitive solution (snom100,snom105)
• Cisco Proprietary Inline Power over Ethernet
• Cisco Proprietary Spare Line Power over Ethernet
see: http://www.snom.com/faq_en.php