In order to make phone calls via the Internet one’s device has to be compatible with Softphone software. In example in order to call from a PDA using VoIP technology one has to install Softphone software, in order for it to work properly, PDA has to have Softphone compatibility.
nPlusOne is a wholly owned subsidiary of Edinburgh Network Technologies Ltd. With literally decades of experience in the design and operation of SS7 and IP network infrastructure, hardware and OSS, as well as developer skills building the