About Nathan Johnson

Nathan Johnson · 07-01-2015

Hello! I have a weird issue that's confusing me and was hoping that someone might have an idea why. First off, my network is currently a melting pot of unmanaged switches (Mostly Netgear and 3Com) and a couple of managed switches that have the defa...

Nathan Johnson · 02-24-2015

Hello everyone! I'm looking for some information about IP phone support on the SG300 and SG500 Small Business switches. I recently took a job for an automotive dealership group with about 200 employees at 6 different stores all located in the same ...

Nathan Johnson · 03-12-2014

Ok, I have a weird problem that is kind of hard to fully explain. My first thought was some sort of wardialing, but I don't know. It seems as if it's using existing extensions as a starting point and is incrimenting the number from there. For exam...

Nathan Johnson · 03-20-2013

Hello, I am still fairly new to the IP telephony world and I've got an issue that I'm not for sure how to proceede. I have a UC520 here at the office and we've been growing/expanding like wildfire over the last year. Now, it's my understanding that...

Nathan Johnson · 07-02-2015

The weird thing is that all the ports already have the "protected port" checkbox unchecked. I put another one of the SG300-10PPs in place late yesterday evening at another one of our stores, but it's uplink went to one of the few managed switches on...

Nathan Johnson · 07-01-2015

Thanks for the reply Davies! I had already checked for collisions and errors like you suggested and ound none. I DID find that the switch port on the SG300-10PP that is the uplink to the main switch in the closet was showing a "locked" status under...

Nathan Johnson · 02-25-2015

Thanks Adawa! I'll verify the PoE specs on the various different models of phones we have.

Nathan Johnson · 03-13-2014

Thanks Anthony! I'm reading up on the toll fraud prevention stuff right now. From what I'm reading, it appears that most of this can be resolved by a trusted IP list. I'm waiting on a call back from my ITSP so I can get the correct IP on their sid...

Nathan Johnson · 03-13-2014

Thanks for your reply bernhardczapp! No, we're not doing any SIP at all and as far as I can tell other than the VWIC that connects to the ISP's router (which supplies our VoIP service only), the UC560 is not reachable from the internet. Do you know...

Member Since	‎03-20-2013 11:21 AM
Date Last Visited	‎08-18-2017 03:56 AM
Posts	10

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Switch Stops Responding

SG500 and SG300 Support for non Cisco IP Phones

UC560 is calling random numbers

Maxed out UC520

The weird thing is that all

Thanks for the reply Davies!

Thanks Adawa! I'll verify

Thanks Anthony! I'm reading

Thanks for your reply