asterisk users - May 2004 - Where to get 48 volt Power Supplies for Cisco IP Phones

Hi,
I picked up some Cisco IP phones 7940, however, was foolish to not catch the
fact that they do not come with power supplies..  Cisco power supplies for
them are  $150 (Can you believe it..) or more from a retailer I know.  I
found one place that sold compatible ones for $15 aus but with a 8 week turn
around..

Can anyone point me in the direction where I can do some Mail Order of
48volt power supplies (240 AC in Australia) 

Thanks,
James Gardiner

You can usually find several on ebay for about $40

-----Original Message-----
From: asterisk-users-admin@lists.digium.com
[mailto:asterisk-users-admin@lists.digium.com] On Behalf Of James Gardiner
Sent: Wednesday, May 12, 2004 8:05 AM
To: asterisk-users@lists.digium.com
Subject: [Asterisk-Users] Where to get 48 volt Power Supplies for Cisco IP
Phones


Hi,
I picked up some Cisco IP phones 7940, however, was foolish to not catch the
fact that they do not come with power supplies..  Cisco power supplies for
them are  $150 (Can you believe it..) or more from a retailer I know.  I
found one place that sold compatible ones for $15 aus but with a 8 week turn
around..

Can anyone point me in the direction where I can do some Mail Order of
48volt power supplies (240 AC in Australia) 

Thanks,
James Gardiner

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At 07:04 AM 5/12/2004, you wrote:
>Hi,
>I picked up some Cisco IP phones 7940, however, was foolish to not catch the
>fact that they do not come with power supplies..  Cisco power supplies for
>them are  $150 (Can you believe it..) or more from a retailer I know.  I
>found one place that sold compatible ones for $15 aus but with a 8 week turn
>around..
>
>Can anyone point me in the direction where I can do some Mail Order of
>48volt power supplies (240 AC in Australia)
I would not buy the Cisco supply.  I use the 3com 3cnjpse on most of our 
Cisco 7940g and 7960g phones.  They are available in the US for less than 
$20 each.  You need a custom wired Cat 5 cable (easy) from the power 
injector to the phone but this allows one less cord plugged into the back 
of the phone cluttering your desktop.  My injectors are labeled: Input 
100-240v  50-60hz 500ma, output 48vdc 400ma.  They should work 
anywhere.  You would need to supply the localized power cord for Australia 
if you bought them from the US.

http://www.3com.com/prod/en_UK_EMEA/detail.jsp?tab=features&sku=3CNJPSE

http://nexttag.compuvest.com/Description.jsp?ItemID=46741

The price is good here but ignore the power specs as they are wrong.

Tom
>Thanks,
>James Gardiner

You can probably pick up a cheap -48VDC power supply on Ebay.  Float it
across 4 12V gel-cell batteries in series and punch down leads to the
correct pairs from a distribution block near your CAT5 patch panels.

Voilla! Instant POE and it will be battery backed too.

On Wed, 2004-05-12 at 08:04, James Gardiner wrote:
> Hi,
> I picked up some Cisco IP phones 7940, however, was foolish to not catch
the
> fact that they do not come with power supplies..  Cisco power supplies for
> them are  $150 (Can you believe it..) or more from a retailer I know.  I
> found one place that sold compatible ones for $15 aus but with a 8 week
turn
> around..
.....................

Try eBay - there are lots on there

Regards,

Simon Brown 

-----Original Message-----
From: asterisk-users-admin@lists.digium.com
[mailto:asterisk-users-admin@lists.digium.com] On Behalf Of James Gardiner
Sent: Wednesday, 12 May 2004 22:05
To: asterisk-users@lists.digium.com
Subject: [Asterisk-Users] Where to get 48 volt Power Supplies for Cisco IP
Phones


Hi,
I picked up some Cisco IP phones 7940, however, was foolish to not catch the
fact that they do not come with power supplies..  Cisco power supplies for
them are  $150 (Can you believe it..) or more from a retailer I know.  I
found one place that sold compatible ones for $15 aus but with a 8 week turn
around..

Can anyone point me in the direction where I can do some Mail Order of 48volt
power supplies (240 AC in Australia) 

Thanks,
James Gardiner

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Asterisk-Users@lists.digium.com
http://lists.digium.com/mailman/listinfo/asterisk-users
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   http://lists.digium.com/mailman/listinfo/asterisk-users

On Wed, 12 May 2004, Tom wrote:
> At 07:04 AM 5/12/2004, you wrote:
> 
> >Hi,
> >I picked up some Cisco IP phones 7940, however, was foolish to not
catch the
> >fact that they do not come with power supplies..  Cisco power supplies
for
> >them are  $150 (Can you believe it..) or more from a retailer I know. 
I
> >found one place that sold compatible ones for $15 aus but with a 8 week
turn
> >around..
> >
> >Can anyone point me in the direction where I can do some Mail Order of
> >48volt power supplies (240 AC in Australia)
> 
> I would not buy the Cisco supply.  I use the 3com 3cnjpse on most of our 
> Cisco 7940g and 7960g phones.  They are available in the US for less than 
> $20 each.  You need a custom wired Cat 5 cable (easy) from the power 
> injector to the phone but this allows one less cord plugged into the back 
> of the phone cluttering your desktop.
http://www.voip-info.org/wiki-Cisco+POE

That is a link to the instructions for making your own POE injector cable 
to use a standard 48v POE injector with a 79xx phone.

-- 
    Vice President of N2Net, a New Age Consulting Service, Inc. Company
         http://www.n2net.net Where everything clicks into place!
                             KP-216-121-ST

Greg Boehnlein wrote:
>On Wed, 12 May 2004, Tom wrote:
>
>  
>
>>At 07:04 AM 5/12/2004, you wrote:
>>
>>    
>>
>>>Hi,
>>>I picked up some Cisco IP phones 7940, however, was foolish to not
catch the
>>>fact that they do not come with power supplies..  Cisco power
supplies for
>>>them are  $150 (Can you believe it..) or more from a retailer I
know.  I
>>>found one place that sold compatible ones for $15 aus but with a 8
week turn
>>>around..
>>>
>>>Can anyone point me in the direction where I can do some Mail Order
of
>>>48volt power supplies (240 AC in Australia)
>>>      
>>>
>>I would not buy the Cisco supply.  I use the 3com 3cnjpse on most of our
>>Cisco 7940g and 7960g phones.  They are available in the US for less
than
>>$20 each.  You need a custom wired Cat 5 cable (easy) from the power 
>>injector to the phone but this allows one less cord plugged into the
back
>>of the phone cluttering your desktop.
>>    
>>
>
>http://www.voip-info.org/wiki-Cisco+POE
>
>That is a link to the instructions for making your own POE injector cable 
>to use a standard 48v POE injector with a 79xx phone.
>
>  
>
I was just looking earlier and there are alot advertised on Ebay. Sub 
?20 is a good price. Shipped from Hong Kong usually tho.

Nicholas Ruddick