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VOS3000 call analysis provides powerful tools for monitoring call performance, analyzing traffic patterns, and optimizing VoIP network quality through comprehensive CDR analytics. Understanding the call analysis features, area statistics, and gateway performance metrics is essential for VoIP operators who want to maximize call quality, optimize routing, and ensure profitable operations. This complete guide covers all call analysis capabilities based on official VOS3000 2.1.9.07 documentation.
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Call analysis in VOS3000 provides comprehensive views of call performance across multiple dimensions: time-based distribution, gateway performance, area statistics, and call failure analysis. These analytics enable operators to identify quality issues, optimize routing decisions, and monitor network health.
Reference: VOS3000 2.1.9.07 Manual, Section 2.9 (Page 140-151)
| Analysis Type | Location | Purpose |
|---|---|---|
| Call Distribution | CDR Analysis > Call Distribution | Time-based call volume analysis |
| Historical Performance | CDR Analysis > Historical Performance | Long-term trend analysis |
| Mapping Gateway Analysis | CDR Analysis > Mapping gateway Analysis | Inbound gateway performance |
| Routing Gateway Analysis | CDR Analysis > Routing gateway Analysis | Outbound gateway performance |
| Area Analysis | CDR Analysis > Area Analysis | Geographic call distribution |
Reference: VOS3000 2.1.9.07 Manual, Section 2.7.1 & 2.7.2 (Page 105-108)
| CDR Type | Location | Data Retention |
|---|---|---|
| Recent CDR | Data query > Recent CDR | Recent calls (configurable period) |
| Historical CDR | Data query > CDR | All historical records |
Reference: VOS3000 2.1.9.07 Manual, Section 2.7.2 (Page 106-108)
| Field | Description | Usage |
|---|---|---|
| Caller Access | Original calling number | Identify call origin |
| Callee Access | Original called number | Destination number before transformation |
| Callee Billing | Number used for billing | Rate lookup number |
| Call Duration | Total call time in seconds | Billing calculation |
| Conversation Duration | Actual talk time | Quality metric |
| Termination Reason | Why call ended | Troubleshooting |
| Caller Fee | Amount charged to caller | Revenue tracking |
| Callee Fee | Amount paid to vendor | Cost tracking |
| Mapping Gateway | Inbound gateway name | Source identification |
| Routing Gateway | Outbound gateway name | Route tracking |
Reference: VOS3000 2.1.9.07 Manual, Section 2.9.1 (Page 140)
Access Call Distribution: ========================= Location: CDR Analysis > Call Distribution Filter Options: - Start Date/Time: Beginning of analysis period - End Date/Time: End of analysis period - Time Granularity: Hour / Day / Month - Gateway Filter: Specific gateway or all - Account Filter: Specific account or all Statistics Displayed: - Total Calls: Number of call attempts - Connected Calls: Successfully connected calls - Total Duration: Sum of all call durations - Average Duration: Mean call duration - ASR: Answer Seizure Ratio (Connected/Total) - ACD: Average Call Duration
| Metric | Formula | Target Value |
|---|---|---|
| ASR (Answer Seizure Ratio) | Connected Calls / Total Attempts × 100% | 40-60% typical, higher is better |
| ACD (Average Call Duration) | Total Duration / Connected Calls | Varies by route type |
| PDD (Post Dial Delay) | Time from dial to ring | < 5 seconds ideal |
| NER (Network Efficiency Ratio) | (Connected – User Busy) / Total | 70-80% typical |
Reference: VOS3000 2.1.9.07 Manual, Section 2.7.4.4 (Page 114)
| Field | Description | Analysis Use |
|---|---|---|
| Area Prefix | Destination prefix code | Identify geographic region |
| Area Name | Geographic location name | Readable destination name |
| Call Count | Number of calls to this area | Traffic volume by area |
| Total Duration | Total minutes to area | Volume analysis |
| Area ASR | Success rate for area | Quality by destination |
| Area Revenue | Revenue from area | Profitability analysis |
Area Details Analysis Steps: ============================ 1. Navigate to: Data query > Bill query > Area details 2. Set Filter Parameters: - Date Range: Analysis period - Account Filter: Specific account or all - Rate Type: Net/Local/Domestic/International - Area Prefix: Specific area or all 3. View Results: - Each row shows one destination area - Compare performance across areas - Identify high-volume destinations - Spot quality issues by area 4. Export for Analysis: - Right-click > Export - Use for reporting and trending Use Cases for Area Analysis: ============================ - Identify most profitable destinations - Find routes with quality issues - Plan rate adjustments - Monitor traffic patterns - Vendor performance evaluation
Reference: VOS3000 2.1.9.07 Manual, Section 2.9.3 (Page 142-145)
| Analysis View | Location | Key Metrics |
|---|---|---|
| Gateway Performance | CDR Analysis > Mapping gateway > Performance | ASR, ACD, Total calls, Duration |
| Call Analysis | CDR Analysis > Mapping gateway > Call analysis | Success/Failure breakdown |
| Fail Analysis | CDR Analysis > Mapping gateway > Fail analysis | Termination reasons distribution |
| Daily Analysis | CDR Analysis > Mapping gateway > Call analysis daily | Day-by-day performance trends |
| Area Analysis | CDR Analysis > Mapping gateway > Area analysis | Destination breakdown per gateway |
Reference: VOS3000 2.1.9.07 Manual, Section 2.9.4 (Page 146-150)
| Analysis View | Purpose | Action Items |
|---|---|---|
| Routing Performance | Overall vendor/gateway quality | Adjust routing priority based on ASR |
| Routing Call Analysis | Call success/failure distribution | Identify problematic routes |
| Routing Fail Analysis | Why calls fail on this gateway | Troubleshoot with vendor |
| Daily Trend Analysis | Day-by-day quality changes | Spot degradation trends |
| Area Cross Analysis | Gateway performance by destination | Optimize per-destination routing |
Reference: VOS3000 2.1.9.07 Manual, Section 4.5 (Page 244-249)
| Termination Reason | Category | Possible Causes |
|---|---|---|
| NoAvailableRouter | Routing Error | No gateway configured for destination |
| User Busy | Normal Failure | Destination number is engaged |
| No Answer | Normal Failure | Destination did not answer |
| Network Error | Technical Issue | Connectivity or protocol error |
| Callee Rejected | Technical Issue | Destination rejected call (SIP 4xx/5xx/6xx) |
| Caller Abandon | User Behavior | Caller hung up before answer |
| Insufficient Balance | Account Issue | Account lacks sufficient funds |
| Trunk Error | Gateway Issue | Gateway capacity or configuration issue |
Fail Analysis Workflow: ====================== 1. Navigate to: CDR Analysis > Routing gateway > Fail analysis 2. Select Gateway and Date Range 3. Analyze Termination Reasons: - High "NoAvailableRouter" → Add routing rules - High "Network Error" → Check gateway connectivity - High "Callee Rejected" → Review destination rates - High "Trunk Error" → Check gateway capacity 4. Cross-reference with: - Online gateway status - System alarms - Debug trace for specific calls 5. Take Action: - Adjust gateway priority - Modify routing rules - Contact vendor for issues - Update gateway configuration
Reference: VOS3000 2.1.9.07 Manual, Section 2.9.2 (Page 141)
Historical Performance Analysis: ================================ Location: CDR Analysis > Historical Performance Time Periods Available: - Last 7 Days - Last 30 Days - Last 90 Days - Custom Date Range Key Metrics Tracked: - Daily call volume trends - ASR trends over time - ACD trends over time - Revenue trends - Cost trends Use Cases: ========== 1. Capacity Planning: - Identify peak hours/days - Plan for capacity upgrades - Scale infrastructure 2. Quality Monitoring: - Spot degrading routes - Identify seasonal patterns - Compare before/after changes 3. Business Intelligence: - Revenue trending - Customer growth patterns - Vendor performance over time 4. SLA Monitoring: - Track quality against targets - Generate compliance reports - Vendor performance reviews
Reference: VOS3000 2.1.9.07 Manual, Section 2.8 (Page 120-139)
| Report | Location | Content |
|---|---|---|
| Mapping Gateway Analysis Report | Data report > Analysis report | Inbound gateway performance summary |
| Routing Gateway Analysis Report | Data report > Analysis report | Outbound gateway performance summary |
| Gateway Area Analysis Report | Data report > Analysis report | Performance by destination per gateway |
| Gateway Cross Area Report | Data report > Analysis report | Multi-gateway area comparison |
Navigate to CDR Analysis > Routing gateway Analysis > Routing gateway performance. Select the gateway and date range. The ASR (Answer Seizure Ratio) will be displayed showing the percentage of calls that were successfully connected versus total attempts.
Call duration is the total time from call setup to teardown, including ringing time. Conversation duration is the actual talk time from when the call was answered until hangup. The difference represents ringing and setup time.
Use the Fail Analysis feature in CDR Analysis. Navigate to Routing gateway > Fail analysis, select the gateway handling that destination, and review the termination reasons distribution. This shows why calls are not completing.
ASR targets vary by route type. Wholesale termination routes typically target 40-60% ASR. Premium routes may achieve 70%+. Routes below 30% ASR often indicate quality issues that need investigation.
In the CDR query screen, apply your desired filters, then right-click and select Export. The data will be saved in CSV/Excel format that can be imported into external analytics tools for deeper analysis.
Need assistance with call analysis configuration, performance optimization, or CDR analytics? Our VOS3000 experts can help you maximize call quality and optimize your VoIP operations.
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