A regional toll call requires that the user to dial "1" plus an area code before dialing the7-digit telephone number. 用戶撥打長途須在區(qū)號前加撥數(shù)位“1”，然后輸入7位電話號碼。
Instead of coupons, it places toll-free telephone numbers on local-search pages—its biggest partner is AOL—and charges advertisers only when they receive a live call from a consumer. 與優(yōu)惠券不同的是，它把免費(fèi)電話號碼放在本地搜索的網(wǎng)頁上—它最大的股東是美國在線—只有當(dāng)廣告主接到一個從消費(fèi)者打來的有效電話他才需要為他的廣告支付費(fèi)用。
Patients monitor themselves daily and call a toll-free telephone line to answer some simple questions about weight gain, swelling and breathing difficulties. 患者每天自行監(jiān)測，可撥打免費(fèi)電話就簡單問題咨詢，如體重增加，水腫和呼吸困難。