CTP Systems CTPhone 1900, Руководство по применению

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DOC00101-01 A-3
Regulatory Information (United States)
FCC Part 15
This equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interfer-
ence when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual, may
cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his own
expense.
Changes or modifications not expressly approved by CTP Systems, Inc.
can void the user’s authority to operate the equipment.
The 25 pair cable used to connect the CTPhone Controller to an MDF/IDF
must be shielded to meet FCC emissions limits under Part 15 Class A.
UL1459 Compliance
To ensure that installations are fully protected from fire hazards, Underwrit-
ers Laboratories specification UL1459 specifies primary and secondary
protectors for circuits that interconnect to the telephone network, or for
cables that exit/enter buildings. Locations for primary and secondary pro-
tectors are shown in Figure A-1.
Primary and Secondary Protectors
When using 66-50 connecting blocks for your MDF, CTP Systems recom-
mends protector ITW Linx SCP-9 for secondary protection and out-of-
building primary protection (see Figure A-1). Protector SCP-9 provides
overvoltage protection of 600 VAC/DC and overcurrent protection of
350mA. It installs in series with the telephone loop.
Protectors may be used to replace bridging clips when installed across two
horizontal 66 block terminals.
Line Circuit Requirements
Line circuits do not require protectors unless the circuit is cross-connected
to out-of-building circuits. Out-of-building circuits require primary/second-
ary protectors. CTP Systems recommends ITW Linx’s SCP-9, a single