XE0080 データシートの表示（PDF） - Xecom
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XE0080 Datasheet PDF : 6 Pages
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Telephone Line Connection Information
A product to be connected to the telephone line must be approved by the appropriate governmental
agency. In the US this agency is the Federal Communications Commission (FCC); Industry Canada (IC)
performs this function in Canada. These agencies verify the product meets their country's specifications,
thereby protecting the telephone system from damage and protecting the user from high voltage
transients (such as lightning strikes) which may pass along the telephone line.
The XE0080 meets FCC Part 68 requirements for hazardous voltage, surge protection and leakage
current. If the system is to transmit data, fax, synthesized voice or DTMF tones, the user must certify that
the signals meet FCC requirements for maximum signal levels, out of band energy and billing delay. Full
details may be obtained from the FCC under Part 68 of the FCC Rules and Regulations, or in Title 47 of
the Code of Federal Regulations, however the basic requirements are as follows:
1. Maximum Transmit Level
“Permissive” telephone line, equipment which transmits data (such as a modem) must not exceed a
transmission level of -9 dBm.
2. Out of Band Energy
Data equipment must not transmit “out of band” energy on the telephone line which exceeds the following
limits:
Frequency Range Max. Power
200Hz to 3990Hz -9 dBm
3990Hz to 4005Hz -27 dBm
4005Hz to 16kHz -16 dBm
8kHz to 94kHz -47 dBm
86kHz to 270kHz -46 dBm
270kHz to 6MHz -6 dBm
3. DTMF Transmission Level
If the system is capable of DTMF dialing, the maximum DTMF transmission level must be less than 0
dBm averaged over a 3 second interval.
4. Billing Delay
A minimum delay of 2 seconds is required after the XE0080 is taken “off hook” and before any
information is transmitted. This delay ensures billing information may be exchanged without
interference.
For use in the United States the user of the XE0080 must register the final system under FCC Part 68.
This is generally accomplished through an independent testing lab which tests the System and submits
the proper paperwork to the FCC for Registration.
XECOM
(5)
XE0080
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