Ricardo Carvalho
2007-Dec-06 15:18 UTC
[asterisk-users] Cisco power injector with GXP2000 phones
I've tried to use a Cisco power injector to supply power over Ethernet to a GXP2000 phone without success. Although when I plugged these phone to a PoE capable Cisco Switch it worked without a problem! Knowing that all these three equipments implement IEEE 802.3af protocol, why doesn't it work with the Cisco power injector? Anyone also had this problem before? Thanks, Ricardo Carvalho. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20071206/fe7f733d/attachment.htm
Salvatore Giudice
2007-Dec-06 15:37 UTC
[asterisk-users] Cisco power injector with GXP2000 phones
The electricity is carried on different pins in a cisco poe injector. Just because they both support the same standard doesn't mean they were implemented the same. -------------------------------------------------- Salvatore Giudice Salvatore.Giudice at VoIPSecurityTraining.com VoIP Security Training, LLC http://VoIPSecurityTraining.com 848 N. Rainbow Blvd. #1676 Las Vegas, NV 89107 Phone: (617) 959-7625 Fax: (214) 279-2906 From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Ricardo Carvalho Sent: Thursday, December 06, 2007 10:19 AM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: [asterisk-users] Cisco power injector with GXP2000 phones I've tried to use a Cisco power injector to supply power over Ethernet to a GXP2000 phone without success. Although when I plugged these phone to a PoE capable Cisco Switch it worked without a problem! Knowing that all these three equipments implement IEEE 802.3af protocol, why doesn't it work with the Cisco power injector? Anyone also had this problem before? Thanks, Ricardo Carvalho. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20071206/4add0f8d/attachment.htm
Tony Plack
2007-Dec-06 15:44 UTC
[asterisk-users] Cisco power injector with GXP2000 phones
> I've tried to use a Cisco power injector to supply power over > Ethernet to a GXP2000 phone without success. Although when I > plugged these phone to a PoE capable Cisco Switch it worked without > a problem! > > Knowing that all these three equipments implement IEEE 802.3af > protocol, why doesn't it work with the Cisco power injector? Anyone > also had this problem before? > > Thanks, > Ricardo Carvalho.Knowing that this is an asterisk mailing list, I would suggest you try your question on the trixbox forums because a Grandstream representative monitors those forums. Now, if you had an asterisk question, this would be the right list Tony Plack