The Load Number (LN) assigned to each terminal de- vice denotes the percentage of the total load to be con- nected to a telephone loop which is used by the device, to prevent overloading. The termination on a loop may consist of any combination of devices subject only to the equipment that the total of the LNs of all devices does not exceed 100.
The ringer equivalence number (REN) assigned to each terminal adapter is used to determine the total number of devices that may be connected to each circuit. The sum of the RENs from all devices in the circuit should not exceed a total of 5.0.
Canadian Class A Products
This Class A digital apparatus complies with Canadian
Cet appareil numérique de la classe A est conforme á la norme
Table 4. Specifications and Part Numbers
Environmental
Operating Temperature | |
Storage Temperature | |
Relative Humidity | 95% maximum, noncondensing |
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Physical | |
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Dimensions | 8 3/4” W x 3 5/8” H x 11” D |
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Weight (fully loaded) | 8 pounds |
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Weight (empty) | 5 pounds |
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TA 850 Relevant Part Numbers | |
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TA 850 Chassis | 1200375L1 |
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RCU | 1200376L1, User Manual |
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PSU | 1175006L1 |
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Quad FXS | 1175408L1, User Manual |
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Quad FXO | 1175407L1, User Manual |
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AC Power Supply/Battery Charger | 1175043L1/L2 |
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Backup Battery Pack | 1175044L1/L2 |
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Single Unit 19” Rack Mount Brackets | 1175045L1 |
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Single Unit 23” Rack Mount Brackets | 1175046L1 |
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System Configuration Part Numbers | |
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TA 850 DC Chassis Bundle | 4200376L1 |
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TA 850 AC Chassis Bundle | 4200376L1#AC |
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TA 850 DC Chassis Bundle + 12 FXS | 4200376L2 |
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TA 850 AC Chassis Bundle + 12 FXS | 4200376L2#AC |
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TA 850 DC Chassis Bundle + 16 FXS | 4200376L3 |
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TA 850 AC Chassis Bundle + 16 FXS | 4200376L3#AC |
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10 | Issue 2, June 2000 |
