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Doesn't know what he doin
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Topic # 138730 15-Jan-2014 08:17 Send private message

Recently after a clean out I seem to have thrown out the adaptor for a Cisco IP phone that I've been using.

The power input on the bottom of the phone says 48V, and this matches the specs I've been finding online. 

I've searched all over the net and found what I think is a picture of the one I had but I can't exactly remember, but this is near identical to the one I had: http://www.ebay.com/itm/Cisco-PSA18U-480C-Switching-AC-Adapter-48V-0-38A-34-1977-03-A0-lot-of-two-2-/141142960211?pt=US_Network_Switch_Power_Supplies&hash=item20dcc6a853

 
 I dont suppose any of you have a spare one lying around somewhere? I thought this would be the place to ask before I go buying one online :P


Much appreciated,
- Sam




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Sam, Auckland 


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  Reply # 967267 15-Jan-2014 08:17 Send private message

Hey, have you listed a price, location and how much shipping would be to other parts of New Zealand? Also if you are asking for a PM make sure your Privacy settings allow your account to receive PM otherwise people can't contact you. Also note if you are selling something we ask you to offer to other members first. Links to private sales (including Trade Me posts) aren't accepted anymore and will be removed.




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  Reply # 967284 15-Jan-2014 08:32 Send private message

Just a thought. A lot of those phones do PoE too. Perhaps you have an adapter, or can get one cheaper than a power brick.




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Doesn't know what he doin
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  Reply # 967285 15-Jan-2014 08:33 Send private message

andrewNZ: Just a thought. A lot of those phones do PoE too. Perhaps you have an adapter, or can get one cheaper than a power brick.


Hmm, that could be an idea. Where would I plug it though? I've never use PoE before, and theres only 2 ports on the unit for Ethernet: 100/10 LAN & 100/10 PC. Would I just plug it into the PC port?

edit: Sorry I should I have said earlier, the phone is a 7912 series, if that helps. 




Bachelor of Computing Systems (2015)

 

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Late 2013 MacBook Pro with Retina Display (4GB/2.4GHz i5/128GB SSD) - HP DV6 (8GB/2.8GHz i7/120GB SSD + 750GB HDD)
iPhone 6S + (64GB/Gold/Vodafone NZ) - Xperia Z C6603 (16GB/White/Spark NZ)

Sam, Auckland 


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  Reply # 967309 15-Jan-2014 08:43 Send private message

I have a 7912 sitting on my desk now :)

We have PoE via the switches but the average adapter is just a powerbrick that connects inline with the ethernet cable.

They need to be powered via the cable that connects to the SW port.




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  Reply # 967327 15-Jan-2014 09:06 Send private message

andrewNZ: I have a 7912 sitting on my desk now :)

We have PoE via the switches but the average adapter is just a powerbrick that connects inline with the ethernet cable.

They need to be powered via the cable that connects to the SW port.


Yeahh done a bit of searching and apparently it uses a propriety version of PoE so would need a Cisco switch/PoE device that supports this standard. And they're about $40+ on trade me. Done suppose you could accidentally lose your power adapter in a courier bag to my house? lol 




Bachelor of Computing Systems (2015)

 

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Late 2013 MacBook Pro with Retina Display (4GB/2.4GHz i5/128GB SSD) - HP DV6 (8GB/2.8GHz i7/120GB SSD + 750GB HDD)
iPhone 6S + (64GB/Gold/Vodafone NZ) - Xperia Z C6603 (16GB/White/Spark NZ)

Sam, Auckland 


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  Reply # 967343 15-Jan-2014 09:22 Send private message

48 port switch out of the rack... do you think they'd miss it?




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  Reply # 967346 15-Jan-2014 09:23 Send private message

andrewNZ: 48 port switch out of the rack... do you think they'd miss it?


Silly me needs to read more haha. But nah they'll be fine.




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  Reply # 967919 16-Jan-2014 08:29 Send private message

These things are pretty hit & miss with PoE because Cisco like their own "standards" as above, I tried 2 different generic PoE injectors here and neither worked on a 7940, the genuine 48V AC adapters are as rare as rocking horse poo and hugely expensive if you can find one.

Their (marginally) cheaper LinkSys PoE switches work fine. If you can find a generic PoE injector that uses their "standard" for $40, then I'd say that's not a bad deal.




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