obi 摘機開始忙音, 幾秒後正常RING TONE

來源: SteveSteve 於 2012-04-16 09:53:42 [舊帖] [給我悄悄話] 本文已被閱讀：次

我的OBI電話, 摘機後先有幾秒中忙音, 然後正常RING TONE, 可以打出, 這正常嗎?

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