12-11-2008 11:07 AM - edited 03-15-2019 03:02 PM
On Cisco hardware:
Can VoIP be hosted using only 2-pair of wires of a Cat6 cable?
If so, are there any disadvantages to doing this when compared to using all 4-pair in a Cat6 cable?
12-12-2008 12:58 PM
Ethernet will not run on 2wire cable.
If you're running analog telephony cable, then yes. I currently have 4 analog phones running out of a split Cat5 cable at the moment.
I don't think there will be any difference, but that isn't definitive on a electrical basis. I wouldn't expect for there to be any difference.
12-12-2008 01:28 PM
Hi Steven,
If you are planning on doing this for an Enterprise deployment it's probably not a great idea. If you are doing it for testing or labbing something up then I would go ahead and give it a try. The characteristics of Cat5 or Cat6 are such that trying to "split" the cable for two devices will likely introduce many unwanted results. Cross-talk being near the top of list.
One other thing to keep in mind is that Gig 10/100/1000 uses all 4 pairs of the cable.
http://en.wikipedia.org/wiki/10BASE-T#Cabling
Hope this helps!
Rob
12-15-2008 04:35 AM
Thank you for the response. I found it and the link very helpful.
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