How to do telephone wiring Inside our home ?

Data cabling works only in one wiring topology i.e. STAR with the switch at the STAR point. However the STAR is not the only option for telephone wiring. Their are others like Ring, Bus, or some hybrid. For brief intro on these typologies, refer the following web-page

http://www.homephonewiring.com/route.html

Most builders (including ours) by default provide Bus topology (the likely motive  being to save cable , conduit and labour cost and effort). However telephone cables are rather inexpensive, conduits are one time investment for each home and therefore we recommend that in the interest of maximum flexibility and ability to add new points without disturbing existing ones, all owners go for STAR wiring only (i.e. REDO the telephone cabling). In-fact telephone cables are thin and can share conduits to each room used by data or coaxial cables, safely. With STAR topology you can keep multiple handsets and multiple landline connections too with the interconnect done at the star point.

We do not recommend using telephone cables out of data points as they reduce data port speed to 100 mbps max (from 1 or 10 Gbps) and also each such sharing port loses ability to do PoE (both passive and active). Moreover high voltages(incl. short risks) are used at times to ring phones and it stands a chance of interfering with even the 100 mbps speed data traffic. However you can use separate Cat 5 cables (cat 5e/6 is overkill and waste of money) as telephone wires (they use twisted pairs and offer better protection against electrical interference) compared to straight-pair telephone cables (infact this is the new recommended standard for telephone cabling). Cat 5 is also only marginally costlier than 2-pair telephone cabling and therefore an attractive preposition.


- Suman Kumar Luthra @ APRC-P3 Telecom Sub-Committtee