Method and system for processing telephone calls via a remote tie-line

A method for routing a call to a called party number, comprising:

• determining that the call is subject to a predetermined type of routing, based on an origination identifier;
• based on the determination, transmitting instructions to route the call to a designated switch at which call traffic is aggregated and routed over a private trunk group;
• and
• changing a called party identifier from a first number, corresponding to the called party number, to a second number, corresponding to an identifier of the designated switch.

A method for routing a call to a called party number, comprising:

• determining that the call is subject to a predetermined type of routing, based on an origination identifier;
• and
• based on the determination, transmitting instructions to route the call to a designated switch at which call traffic is aggregated and routed over a private trunk group,
• wherein the designated switch is associated with a private network associated with the called party number, the origination identifier is associated with the private network, and the call is routed over a public switched telephone network (PSTN) prior to determining that the call is subject to the predetermined type of routing.

A computer-readable medium comprising an executable program for routing a call to a called party number, the program comprising:

• routing determination code that determines that the call is subject to a predetermined type of routing, based on an origination identifier;
• and
• instruction transmission code that, based on the determination, transmits instructions to route the call to a designated switch at which call traffic is aggregated and routed over a private trunk group,
• wherein the designated switch routes calls based on automatic selection of facilities-remote tie-line (ASF-RTL) routing.

A computer-readable medium comprising an executable program for routing a call to a called party number, the program comprising:

• routing determination code that determines that the call is subject to a predetermined type of routing, based on an origination identifier;
• instruction transmission code that, based on the determination, transmits instructions to route the call to a designated switch at which call traffic is aggregated and routed over a private trunk group;
• and
• code that changes a called party identifier from a first number, corresponding to the called party number, to a second number, corresponding to an identifier of the designated switch.