User`s guide

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OEM Advisory
For OEM use, the mounting of the Transport DR in the final assembly must be made so that
the Transport DR is isolated from exposure to any hazardous voltages within the assembly.
Adequate separation and restraint of cables and cords must be provided. The circuitry from
the Transport DR to the telephone line must be provided in wiring that carries no other
circuitry (such as PC or PR leads) unless specifically allowed by the rules. PC board traces
carrying tip and ring leads shall have sufficient spacing to avoid surge breakdown.
Electrical Safety Advisory
Digi International suggests that customers use a surge arrestor. Telephone companies
report that electrical surges, typically lightning transients, are very destructive to customer
terminal equipment connected to AC power sources. This has been identified as a major
nationwide problem.