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The ZyXEL U 90E modem features two RJ-11 phone jacks, one for 2-wire dial-up and 2-
wire leased line connection (LINE) and one for an optional connection to a telephone set
(PHONE). The signals on these pins are:
1
2
3
4
Phone Jack Pin Assignments
Phone Jack Pin Assignments
A
RING
TIP
A1
U-90E Data/Fax Modem
Appendix C
K
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