telephone surge protection jacks
/ˈtɛlɪfˌəʊn ˈsɜːdʒ pɹətˈɛkʃən ˈdʒaks/
n
English · telephone surge protection jacks中文 · 电话防浪涌插座Español · tomas telefónicas contra sobretensionesFrançais · prises téléphoniques antisurtension
意味：Jacks designed to protect communications equipment (such as telephones, fax machines and modems) from damage caused by too high voltage.