Systems and methods for processing telephone calls

A method comprising:

• receiving, by a switch device of a communication system, a group of dialed digits that includes three digits, followed by four digits, followed by five digits;
• processing, by the switch device, the three digits of the dialed digits as an area code;
• processing, by the switch device, the four digits of the dialed digits as a central office location independent code;
• processing, by the switch device, the five digits of the dialed digits as a central office location dependent code;
• and
• establishing, by the switch device, a call based on the processed three digits, four digits, and five digits,
• establishing the call including:
• identifying a central office based on a first digit of the five digits.

A system comprising:

• a switching device to:
• process a call request as a 12-digit telephone number, the 12-digit telephone number including a 3-digit area code, followed by a 4-digit central office location independent code, followed by a 5-digit central office location dependent code;
• and
• identify a central office based on a first digit of the 5-digit central office location dependent code.

A method comprising:

• receiving a call request at a switch device of a communication system, the call request including a group of at least 12 dialed digits, the at least 12 dialed digits including a 3-digit area code immediately followed by a 4-digit code that includes exactly two digits of a 3-digit Central Office Prefix Code of a 10-digit telephone format of a North American Numbering Plan (NANP);
• and
• processing, by the switch device, the call request using the 3-digit area code and the 4-digit code,
• the at least 12 dialed digits further including a final code including at least 5 digits, and
• the processing further including:
• processing a first digit of the final code to identify a destination switch.