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NETMAN  2014

NETMAN 2014

Subject:

Re: I hate fiber converters but...

From:

Chuck Anderson <[log in to unmask]>

Reply-To:

The EDUCAUSE Network Management Constituent Group Listserv <[log in to unmask]>

Date:

Fri, 31 Oct 2014 09:43:57 -0400

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (26 lines)

Omnitron sells "extended temperature range" versions, and managed and
unmanaged versions.  For the unmanaged converters, they also have a
neat feature where you can toggle the PoE PD power by flapping the
fiber link--great for power cycling hung equipment.

On Fri, Oct 31, 2014 at 01:03:04PM +0000, Strandskov, Mark D. wrote:
> Be careful that in an unheated enclosure the temperature will drop below the operating parameters of most media converters if you are not careful.  They may still work but we have noticed that they tend to die more frequently.
> 
> We have had some success for single camera locations using a Comnet CLFE1COAX (Single Channel Ethernet Over Coax with Pass-Through POE).  We haven’t seen any of these fail yet.  They are small and you can power both the remote device and the media converter itself over the coax at long distances (>100m).
> 
> For the most part any remote emergency phones we have are analog because if the power is out, the phone would be out.  Campus police do not want the phones out ever.  Most of these locations also have cameras in addition to phones.  For the cameras at these locations, we are using the Hershmann RS30 industrial Ethernet switches with POE.  In Saginaw where we have the emergency phones and cameras in the parking lots, we didn’t feel comfortable trusting a media converter to not fail due to the weather.  On campus is a different story as we can get to those quicker.
> 
> Mark…
> 
> From: Pete Hoffswell <[log in to unmask]<mailto:[log in to unmask]>>
> Reply-To: The EDUCAUSE Network Management Constituent Group Listserv <[log in to unmask]<mailto:[log in to unmask]>>
> Date: Friday, October 31, 2014 at 8:15 AM
> To: "[log in to unmask]<mailto:[log in to unmask]>" <[log in to unmask]<mailto:[log in to unmask]>>
> Subject: [NETMAN] I hate fiber converters but...
> 
> ... we need some to connection ip phone-based security boxes on parking lot poles to fiber, and then into our cisco infrastructure.  I'm thinking a 100bT to SFP fiber converter would do the trick.
> 
> Anyone using these things?  Recommendations?  Gotchas?

**********
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