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In industrial building Profibus type cable is deployed but some
other types of cable are present in those structures.
Today, in most of them we also find single twisted pair cables
(screened or unscreened) cabling for telecommunication purposes
particularly for TDM (Time Division Multiplexing) telephonic
This cabling system is provided at a low cost and lot of cabling installers are well aware of its specifications.
Having Ethernet over the existing wiring system in the buildings
will provide a solution to migrate traditional TDM equipments
towards the IP world. While keeping the current cabling the
solution becomes cost effective : it requires only changing
devices (i.e. VoIP phone sets instead of TDM ones). The solution
needs only minor investments (put in place some Ethernet switches)
but no civil engineering is required to deploy specific Ethernet
cables (e.g. Category 5 or Category 6). De facto, this optimizes
the overall cost of the IP infrastructure.
The single twisted pair cable is similar to AWG 22, corresponding roughly to Æ 0,6 mm copper or AWG 24 corresponding roughly to Æ 0,5 mm copper.
The cable characteristics are :
We are wondering if the 802.3cg group could have some interests for consideration in standardization of Ethernet (10Mb/s ?) on this type of cable.
Feel free to comment and thank you for your feedback.