Overview
HLR (Home Location Register) validation helps you verify phone number reachability before making calls, significantly improving your campaign performance and reducing wasted resources on inactive numbers.HLR validation is available for all voice campaigns and can be configured at the campaign level with customizable retry logic.
Enabling HLR Validation
1
Access Voice Campaign Settings
Navigate to your voice campaign and click on the Voice Agent configuration step in the campaign wizard.
2
Locate HLR Validation Section
Scroll down to find the HLR Validation section below the Numbers and Agents configuration.
3
Configure HLR Settings
Click the Configure button to open the HLR validation settings modal.
4
Enable Auto HLR Validation
Toggle the Auto HLR Validation switch to enable pre-call number verification.
Once enabled, all numbers will be validated before dialing attempts.
Configuring Retry Logic
When HLR validation is enabled, you can set up intelligent retry logic to handle temporarily unreachable numbers:Number of Retries
Set how many times the system should retry failed calls (1-10 retries recommended).Recommended Settings:- Lead Generation: 3-5 retries
- Customer Service: 2-3 retries
- Sales Calls: 4-6 retries
Delay Between Retries
Configure the initial wait time before the first retry (1-60 minutes).Best Practices:- Peak Hours: 5-10 minute delays
- Off-Peak Hours: 2-5 minute delays
- Weekend Campaigns: 10-15 minute delays
Understanding HLR Status Indicators
The HLR validation section displays the current status with color-coded badges:Enabled
HLR validation is active for this campaign. Numbers will be verified before calling.
Disabled
HLR validation is not active. All numbers will be called without pre-verification.
Viewing HLR History
Track your HLR validation performance by accessing the history:1
Open HLR Settings
Click Configure in the HLR Validation section.
2
Access History
Click View HLR History button at the bottom of the settings modal.
3
Analyze Results
Review the history table showing:
- Request ID and timestamp
- Phone number and validation status
- Carrier response details
- Success/failure indicators
4
View Raw Responses
Click View Raw for any entry to see the complete HLR response data including carrier information, porting status, and technical details.
HLR Analytics Dashboard
Monitor your HLR validation performance with comprehensive analytics:Key Performance Indicators
- Total Requests: All HLR validations performed
- Success Rate: Percentage of numbers validated as active
- Average Response Time: Speed of validation queries
- Total Cost: Investment in HLR validation
- ROI: Return on investment from improved targeting
Cost Analysis
- Cost per Request: Average price per HLR validation
- Total Savings: Money saved from avoiding failed calls
- Failed Call Prevention: Number of unsuccessful calls avoided
Best Practices for HLR Validation
Optimal Configuration Settings
Optimal Configuration Settings
For High-Volume Campaigns:
- Enable HLR validation for all numbers
- Use 3-5 retries with 2-3 minute initial delays
- Monitor costs and adjust retry limits as needed
- Validate premium/high-value prospects
- Use longer retry delays (5-10 minutes) for better success rates
- Focus on quality over quantity
- Use shorter retry windows (1-2 retries max)
- Prioritize immediate responses over comprehensive validation
- Monitor real-time performance metrics
Cost Management
Cost Management
Budget Control:
- Set daily/monthly HLR validation limits
- Monitor cost per validation in analytics
- Balance validation costs against improved success rates
- Track savings from prevented failed calls
- Calculate cost-benefit ratio regularly
- Adjust retry logic based on performance data
- Validate contact lists during off-peak hours when possible
- Remove consistently failing numbers from campaigns
- Use analytics to identify optimal validation strategies
Performance Monitoring
Performance Monitoring
Regular Review Schedule:
- Check HLR analytics weekly for campaign optimization
- Monitor carrier performance trends monthly
- Adjust retry logic based on success rate patterns
- Connection rate improvements from HLR validation
- Cost per successful connection comparison
- Time savings from avoiding failed calls
- Overall campaign ROI impact
- Sudden drops in validation success rates
- Unexpected increases in validation costs
- Poor retry performance patterns
Common Issues and Solutions
High Validation Costs: If HLR costs are unexpectedly high, check your retry settings and consider reducing the number of attempts or increasing delays between retries.
Troubleshooting Guide
Issue: Low HLR Success Rates- Cause: Outdated contact data or poor data sources
- Solution: Audit data quality and update contact acquisition processes
- Cause: Retry delays too short or network congestion
- Solution: Increase retry intervals and spread attempts across time periods
- Cause: Carrier-specific technical issues or network problems
- Solution: Contact support with carrier details and HLR response logs
Most HLR validation issues can be resolved by adjusting retry timing or improving contact data quality.
Integration with Campaign Workflow
HLR validation integrates seamlessly with your existing voice campaign process:- Campaign Launch: HLR validation begins automatically when campaign starts
- Real-Time Processing: Numbers are validated immediately before each dial attempt
- Automatic Retry Handling: Failed validations are queued for retry according to your settings
- Analytics Integration: All validation data appears in campaign performance reports
- Cost Tracking: HLR costs are included in overall campaign cost analysis
Enable HLR validation early in your campaign setup to ensure optimal performance from the first call.