CTP Systems CTPhone 1900, Applications Manual

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Regulatory Information (United States)
This appendix covers the following regulatory information for the CTPhone
1900 system.
• FCC Part 68
• FCC Part 15
• UL 1459
• UTAM
FCC Part 68
The CTPhone 1900 UPCS equipment complies with Part 68 of FCC rules.
Product labels contain, among other information, the FCC registration
number. You must provide this information to the telephone company if
they request it.
Use the ringer equivalence number (REN) to determine the number of
devices you can connect to the telephone line. Excessive RENs on the
telephone line may result in devices not ringing in response to an incoming
call. In most, but not all areas, the sum of the RENs should not exceed five
(5). Contact the telephone company to determine the maximum REN for
the calling area.