北马里亚纳群岛电话号码：格式、区号和验证指南

+1 670 NXX XXXX
│  │   │   └── Subscriber Number (4 digits)
│  │   └────── Exchange Code (3 digits)
│  └────────── Area Code (670)
└───────────── Country Code (+1)

import re

def validate_mp_number(phone_number):
    """
    Validates a Northern Mariana Islands phone number.

    Args:
        phone_number (str): The phone number to validate.

    Returns:
        bool: True if the number is valid, False otherwise.
    """
    cleaned = re.sub(r'\D', '', phone_number)  # Remove non-numeric characters
    pattern = r'^1?670[2-9]\d{6}$' # Matches +1 or 1 optional, area code 670, exchange 2-9, and 6 digits
    return bool(re.match(pattern, cleaned))
# Test cases
numbers = [
    "+1 670 234 5678",  # Valid
    "16701234567",    # Valid
    "670-123-4567",   # Valid
    "6701111111",    # Invalid (N11 special service)
    "1 670 123 4567", # Invalid (Exchange starts with 1)
    "+1 671 123 4567" # Invalid (Wrong area code)
]

for number in numbers:
    is_valid = validate_mp_number(number)
    print(f"'{number}' is valid: {is_valid}")

// Emergency call handling example
function handleEmergencyCall(phoneNumber) {
  const EMERGENCY_NUMBERS = ['911', '112']; // Include common emergency numbers

  if (EMERGENCY_NUMBERS.includes(phoneNumber)) {
    // Priority routing and data collection
    return {
      priority: 'HIGH',
      route: 'EMERGENCY_PSAP',
      location: getCurrentLocation(), // Implement location retrieval (GPS, network-based)
      timestamp: new Date().toISOString(),
      callbackNumber: phoneNumber // Include the originating number for potential callbacks
    };
  }
  // Handle non-emergency numbers or return appropriate status
  return { priority: 'NORMAL' };
}


// Example of getCurrentLocation function using browser geolocation API
function getCurrentLocation() {
    return new Promise((resolve, reject) => {
        navigator.geolocation.getCurrentPosition(
            (position) => {
                resolve({
                    latitude: position.coords.latitude,
                    longitude: position.coords.longitude
                });
            },
            (error) => {
                reject(error); // Handle location errors appropriately
            }
        );
    });
}

// Carrier routing example
const carrierRoutes = {
  'ITE': {
    ranges: ['670-2', '670-3'], // Example ranges
    routing: 'SIP_TRUNK_1'
  },
  'DOCOMO': {
    ranges: ['670-4', '670-5'], // Example ranges
    routing: 'SIP_TRUNK_2'
  }
};

// Function to determine routing based on carrier and number range
function getCarrierRoute(phoneNumber) {
    // ... logic to determine carrier based on phone number prefix or other criteria
    const carrier = determineCarrier(phoneNumber);

    if (carrier && carrierRoutes[carrier]) {
        // ... logic to check if the number falls within the carrier's assigned ranges
        if (isInCarrierRange(phoneNumber, carrierRoutes[carrier].ranges)) {
            return carrierRoutes[carrier].routing;
        }
    }

    return 'DEFAULT_ROUTE'; // Fallback route
}

sequenceDiagram
    participant Donor as Donor Carrier
    participant NPAC as Number Portability DB
    participant Recipient as Recipient Carrier
    
    Recipient->>NPAC: Submit Port Request
    NPAC->>Donor: Validate Request
    Donor-->>NPAC: Confirm Eligibility
    NPAC->>Recipient: Schedule Port
    NPAC->>All Carriers: Update Routing Tables

import logging

def process_phone_number(number):
    try:
        # Basic sanitization
        cleaned = sanitize_number(number)
        
        # Validation
        if not is_valid_mp_number(cleaned):
            raise ValueError("Invalid MP number format")
            
        # Format for storage
        formatted = format_for_storage(cleaned)
        
        return formatted
        
    except Exception as e:
        logging.error(f"Number processing failed: {str(e)}")
        raise  # Re-raise the exception after logging