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Connecting telephones into a Cat5 network

Connecting telephones into a Cat5 network

Connecting telephones into a Cat5 network

Can anyone tell me what adaptor I require to plug telephones into a Cat5e wired building in the UK

RE: Connecting telephones into a Cat5 network

Do you have a PBX in the building?  Are they analogue or digital phones?  If they are digital, they should plug into any RJ-45 connector as long as they are wired to the digital line cards in the switch correctly.  If they are analogue phones, then you must use a Mod-Tap line adapter.  This converts the rj-11 plug on a normal phone into RJ-45.  make sure that its a master and not a slave as the master has the element which allows the phone to ring.


RE: Connecting telephones into a Cat5 network

There is no need for an adaptor, a rj-11 plug will plug just fine into a rj-45 jack. At our location the wiring closets have a patch feed from the telco switch, the patch panels to the office jacks and the data switchs all mounted in a rack. We then patch what ever is required to the jacks from either the switch or phone feed.

RE: Connecting telephones into a Cat5 network

If you're in the UK the phone handsets will not be fitted with RJ-11's, they will have the UK standard 431a plugs (usually) which do need an adaptor.

Three adaptors are available
(1) for use with PSTN lines that are patched across the Cat5 scheme. These contain the neccessary capacitor for the ringing and a resistor for BT line testing.
(2) for analogue telephones. These contain a bell capacitor but no resistor.
(3) for digital telephones (most dedicated systemphones). These dont contain any extra componants.
All three adaptors are readily available from lots of suppliers - Maplin, Nimans even BT, wherever you buy your cat5 from.

NB: If you have a lot of phones to connect, it may be cheaper to replace the phone linecord with an RJ-45 option, either buy the leads ready made or invest in a bag of rj45 plugs and a crimper!

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