7936 conference phones - cabling/power

Unanswered Question
Sep 14th, 2007
User Badges:

I've just deployed thirty 7936s and I'm getting a lot of complaints about how untidy the cabling is. This is mostly down to the fact that there is the need for the power supply and it's mains lead, the little junction box that connects the network lead and power supply to the single cord up to the phone, and the fact that the supplied leads for the 7936 are just far too long for most purposes. Lot of "spaghetti". I notice the connection on the 7936 lead isn't quite a standard RJ45, it has a little protrusion that would prevent plugging it into a regular RJ45 socket.


So my question - what's special about the lead from the connector box to the phone itself? Can I safely replace that with a regular (and more sensible length) patch lead? And if I can, could I then relocate the power block and all that to the comms closet?


(Or course a better question has to be - why on earth don't the 7936s use PoE? If the 7985 can, I don't see why the 7936 couldn't have been designed to!)

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Loading.
Rob Huffman Fri, 09/14/2007 - 17:15
User Badges:
  • Super Blue, 32500 points or more
  • Hall of Fame,

    Founding Member

  • Cisco Designated VIP,

    2017 IP Telephony, Unified Communications

Hi Martin


You are correct! These are very messy to connect. I have used a standard 2M RJ45 Patch cord without issue so that's a start. These units require 30 volts so I guess no PoE :)


I don't see why the power module couldn't go in the wiring closet depending on the distance, maybe I'll try next week.


Here are the specs;


Cable Specifications


Keyed RJ-45 plug for the 25-ft. CAT 5 cable connection on the bottom of the IP Conference Station unit


Keyed RJ-45 plug for the 25-ft. CAT 5 cable connection on the PIM


RJ-45 plug for the 6-ft. CAT 5 cable connection on the PIM


30-volt power connector for power connection on the PIM


From this doc;


http://www.cisco.com/en/US/products/hw/phones/ps379/products_administration_guide_chapter09186a0080726357.html




Hope this helps!

Rob

Actions

This Discussion