Method and system for providing calling number restoral

A method for a telephone network to restore private call information to an outgoing call from a service node external to a telephone network comprising:

• (a) removing and storing the private call information of an incoming call to the service node, and associating a transaction identification with the private call information and the incoming call;
• (b) sending the incoming call to the service node external to the telephone network;
• (c) associating the outgoing call with the transaction identification from the incoming call and sending the outgoing call into the telephone network;
• and
• (d) retrieving the private call information using the transaction identification and inserting the private call information into the outgoing call.

A system for providing calling number restoral comprising:

• (a) a service switching point provisioned with an incoming trigger and an outgoing trigger;
• (b) an out-of-network service node in communication with the service switching point;
• and
• (c) a service control point in communication with the service switching point,
• wherein the system removes private call information from a call exiting a telephone network, stores the private call information, and restores the private call information to the call when the call re-enters the network.

A service switching point for removing, storing, and restoring private call information of an out-of-network call comprising:

• (a) a means for communicating with a service control point;
• (b) a means for communicating with an out-of-networks service node;
• (c) an incoming trigger that sends a first query to the service control point in response to receiving the out-of-network call destined for the out-of-network service node;
• and
• (d) an outgoing trigger that sends a second query to the service control point in response to receiving the out-of-network call from the out-of-network service node,
• wherein the service control point removes and stores the private call information in response to the first query and restores the private call information in response to the second query.

A service control point for preventing private call information from exiting a telephone network comprising:

• (a) a means for removing the private call information from a call exiting the telephone network;
• (b) a means for storing the private call information;
• (C) a means for retrieving the private call information when the call re-enters the telephone network;
• and
• (d) a means for restoring the private call information to the call.