55 West 19th Street,
New York, New York 10011
T: (212) 675-6565
F: (212) 675-3686
E: http://www.nytele.com/
|
How Does IPLD Work? Each Gateway is connected to the PSTN and to an IP network. To initiate a call, a user calls into one Gateway via conventional phone lines or a PBX system. The Gateway contacts a second terminating Gateway (usually located in the destination city) over the IP network. The second Gateway dials the (standard PSTN) number out on its phone or PBX lines to the local PSTN. And, because it is dialing from within the local area code, it is now a local call. The person RECEIVING the call, does NOT need to own or have access to an IPLD Gateway, because the call is coming over their regular phone system.
The first Gateway switches the call FROM the PSTN to the IP network (TCP/IP protocol). The second terminating Gateway switches the call FROM the IP network BACK TO the PSTN. With IPLD you have real-time, two-way, full duplex conversations. The fact that the call is being routed over an IP network is undetectable by the user. By strategically locating Gateways in desired calling areas (e.g., multiple offices), long distance costs are dramatically reduced - the IP network covers the long distance portion of the call rather than conventional circuit-based telephone lines. |
The user is connected to (i.e., able to talk to) the second party with both parties using their regular phones. The Gateway at each end of the call encrypts and packetizes the voice stream received from the PSTN and routes it over the IP network to the Gateway at the other end of the call. The receiving Gateway converts the data packets back into voice stream which is sent over the PSTN phone line to the waiting party.