We are in the process of installing a TDM PABX, but there is a plan in future to go for VOIP in a couple of years, my question what is the recommended cables type valid for both, digital & voip? any specific standadars?
Also, don't allow the cabler to "split the jacks" such that a single Cat5e/6 cable services more than one PBX phone. VoIP phones, now running at 1Gb speeds, require all four pairs.
You would think this goes without saying but I had a cabler do it to a customer last year.
1. You get 48 port Cisco switches which can provide 370 Watts (Half POE), that means 24 such IP Phone which consumes 15.4 watts can be plugged on this switch.
2. And the other 48 port POE switch with 740 Watts can power 48 such phones.
Please note not all phones consume 15.4 watts it depends on the class which that phone belongs to, if a ip phone consumes lets say 7.5 watts, then 48 such phones can be plugged in your half POE 48 port switch.
