Not everything will turn out perfect the first time in large projects. Adapting is part of the learning process also as camera positioning requirements may change every time. Unfortunately at times cables while being laid are also cut to the required length, which makes any change hard, as the cable will not reach the new location. It may also happen that sometimes the installer will cut the cable length bit shorter during the laying work itself resulting in an installation problem.
So do we have to relay the cable again ? Not really.
You can extend ethernet cables (as long as they totally are under ~95m from nearest switch or extender), by using splicing methods like:
(1) Use a RJ45male-RJ45male coupler.
This method works, but inexpensive poor quality couplers abound in market and may not give a strong joint. Therefore attention must be paid to the quality of coupler, its type (UTP one for UTP and STP one for STP) and that it does not come off with a little bit of tugging at the cables, otherwise you will have occasionally avoidable maintenance works.
(2) Use keystone (IO module)
keystone joints are very strong on both sides as they have been tried and tested for wall outlets where the patch chords move all the time. We recommend this method over the coupler for reliability. Also take care that coupler types (UTP for UUTP cables, and STP for STP cables) are matched, otherwise it may cause a break in earthing functionality for STP cabling.
Both the splicing (joining) connectors should be put in a small PVC box or Conduit 2-way-junction box to allow for maintenance, checking & repairs in future.
Please take care that these type of junction box is required IP grade, if used outdoors.
- Suman Kumar Luthra @ APRC-P3 Telecom Sub-Committee
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