Source: snapvoip.blogspot.com

Philippine’s NTC, the Philippine telecommunications regulator, has issued a memorandum circular on ADDITIONAL RULES ON VOICE OVER INTERNET PROTOCOL, VoIP. This aims to clear uncertainty over certain aspects of what is or is not allowed – particularly in reference to questions of access charges for VoIP, as well as the offering of VoIP service as a purely Internet-based application.
It also covers cases such as VoIP service providers (VoIPSP) requiring access to the public switched telephone network (PSTN) shall enter into an interconnection or access arrangement with at least one of the duly enfranchised and authorized PSTN operator. Such carrier/s shall then be responsible for routing of the VoIP traffic to and from the networks of other operators and shall see to it that VoIP traffic routed to other operators are properly identified. The VoIPSP shall pay transit charges to the PSTN. The transit charge shall not be higher than PhP0.25 per minute.
The Memorandum is available at NTC.