Tool free phone is what kind of phones?

问题描述:

Tool free phone is what kind of phones?
On viewing the website of foreign companies,Tool free phone number is listed on their contact menus.
Would someone be helpful to tell me what it is?
Thanks a lot.
Sorry for my Chinese Input Tool is not working so I can only type in English.

你是不是想写Toll free phone?
如果是TOLL free phone 就话就是免费电话的意思.就像0800开头的,或者国内0400开头的那种,打电话的一方不需要付电话费.