This is actually a domestic toll free service within a foreign country, so called, Paid 800 service. Calling from other countries, the calling party still needs to pay for the international call. The called party in the destination country also needs to pay for the domestic service fee. It is totally different to the international toll free service (ITFS) or Collect Call which calling party pays nothing at all.

Example of Paid 800 in the US., 1-800-xxx-xxxx, 1-866-xxx-xxxx. Calling from a telephone inside the US., the caller will pay no charge while the called person will pay all service charges. If the caller makes call from other countries, he must dial as a normal IDD, e.g., call from Thailand using CAT 001 by pressing 001-1-800-xxx-xxxx, using CAT 009 by pressing 009-1-800-xxx-xxxx The caller must pay service charge at CAT 001 rate and CAT 009 rate correspondingly.

Remark: There are some US. Numbering notified that calling from other countries as Call Collect. E.g., 1-605-335-2222; this is CiTi Bank credit card contact number inside the US. If anyone calls from Thailand via CAT 001 or CAT 009 by dialing 00116053352222, he must pay for the call as CAT 001 rate.