Hi,
I was given three VOIP phones by my workplace and I’d like to play around with them. They did not come with adapters but I do have a Cisco Power Injector. However, even though the Injector’s power light is on it does not power up the phone when I run the ethernet cable from the phone to the Injector. I tried all of the phones, none of them powered up. Is it the phones or the wrong adapter? Thank you.
The phones may or may not be PoE - this should usually be shown on the
device’s label where it tells you what its power requirements are.
Cisco adapters can be non-standard, and may not be 802.3af
Tell us what make / model both the phones and the injector are, and we may
be able to give more detailed advice.
Antony
Sending photo of phone label
The Injector is
AIR-PWRINJ3
Sending photo of phone label
Please write in plain text the makes and models of the telephones.
The Injector is AIR-PWRINJ3
confirms that that device is not 802.3af compatible - it will only work with
devices which use Cisco’s non-standard provision of 48Vdc on the unused pairs
in an ethernet cable.
This might possibly work with some non-Cisco phones, but it is very
unlikely.
Antony.
Ok thanks, I guess I will buy compatible adapters on Ebay. Are these VOIP phones?
If you ‘google’ groups of characters from the label, you may find your answer.
A 30 second perusal and I never saw ‘voip’ or ‘sip.’ YMMV.
Ok, I will do that. Thanks.