Methods and systems for providing foreign call back number compatibility for VoIP E9-1-1 calls

A computer-readable medium which stores a set of instructions which when executed performs a method for providing a foreign call back number compatibility database, the method comprising:

• assigning a non-local telephone number to a subscriber;
• assigning a local telephone number to a subscriber;
• and
• providing periodically both the non-local telephone number and the local telephone number associated with the subscriber.

A method for providing foreign call back number compatibility, the method comprising:

• receiving a local telephone number assigned to a subscriber, the subscriber having a non-local telephone number as the normal calling number of the subscriber;
• querying a database with the local telephone number to obtain the non-local telephone number;
• and
• providing the non-local telephone number.

A system for providing foreign call back number compatibility, the system comprising:

• means for receiving a local telephone number assigned to a subscriber, the subscriber having a non-local telephone number as the normal calling number of the subscriber;
• means for querying a database with the local telephone number to obtain the non-local telephone number;
• and
• means for providing the non-local telephone number.

A computer-readable medium which stores a set of instructions which when executed performs a method for providing a foreign call back number compatibility database, the method comprising:

• receiving a local telephone number assigned to a subscriber, the subscriber having a non-local telephone number as the normal calling number of the subscriber;
• querying a database with the local telephone number to obtain the non-local telephone number;
• and
• providing the non-local telephone number.

A method for providing foreign call back number compatibility, the method comprising:

• maintaining a database comprising a plurality of local telephone numbers;
• associating a one of the plurality of local telephone numbers with a subscriber having a non-local telephone number as a normal calling number;
• and
• providing periodically the non-local telephone number and the one of the plurality of local telephone numbers associated with the subscriber.