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 Question by glenn vodhanel posted 07 Mar 2003
How many pairs are used for the 100bt standard.
Is there any problem with using the same 100bt cable for both voice and data. I just purchased the 3com NBX 100 server. Thanks
 Answer by Dmitri Abaimov posted 10 Mar 2003
Dear Glenn,

Congratulations on purchasing the 3Com's Ethernet PBX. Actually, you don't really have to worry about using the same cable for voice and data because in your particular case it will be all data. The traditional voice in your system will end up at the analog trunk card of your PBX. All the rest will be handled through 100Mbit/s Ethernet connections.

Anyway, 100 Base-TX and 10 Base-T versions of Ethernet use two pairs: #2 and #3. Therefore you still have 2 pairs left to power your phones through the same cable. You are going to need adapters - check with your 3Com vendor on that.

Dmitri Abaimov, RCDD

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