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ATA 188

alexhang
Level 1
Level 1

am trying to connect as many analog phone using splitter to connect to RJ-11 FXS port, anyone knows how many

analog phone can one RJ-11 FXS port supports?

3 Replies 3

Not applicable

A FXS card can support only 2 anlaog phones. More than that will not be supported.

why only 2 ?

Ringing Characteristics:

Ringer equivalence number (REN) : Up to 5 REN per RJ-11 FXS port

http://www.cisco.com/en/US/products/hw/gatecont/ps514/products_administration_guide_chapter09186a00801e0dfa.html

I think, old hardware was about 3 REN.

yup, up to 5 REN, many thkz