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Voice Feature Guide 01

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
POTS Interface Protection

POTS Interface Protection

Service boards are connected to user terminals through subscriber cables. Some subscriber cables may be routed under the ground or overhead and some may be routed in parallel with the mains AC power cables. In these cases, a high voltage may be generated on subscriber cables because of the lightning attack, contact with power lines, and induction of power lines. The high voltage may damage the ports on service boards. Therefore, service boards must be equipped with the protection capability to prevent occurrence of the preceding problems.

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Updated: 2019-02-22

Document ID: EDOC1100067358

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