VOS3000 Authorization Management, VOS3000 Call Distribution Analysis, VOS3000 System Log Audit, VOS3000 Area Information Configuration, VOS3000 Recent CDR Query, VOS3000 Payment Record Management, VOS3000 Modify CDR Feature, VOS3000 Report Management, VOS3000 Historical Performance Analysis, VOS3000 SIP Registration Management, VOS3000 Internal Audio Management, VOS3000 Phone Card Management

VOS3000 Historical Performance Analysis: Complete ASR ACD Quality Metrics Guide

May 2, 2026May 2, 2026 king

VOS3000 Historical Performance Analysis: Complete ASR ACD Quality Metrics Guide

📈 How do VoIP operators track whether their network quality is improving or declining over time? Which carriers are consistently delivering the best answer seizure ratios? The VOS3000 historical performance analysis module provides longitudinal quality metrics tracking — enabling operators to analyze ASR (Answer Seizure Ratio), ACD (Average Call Duration), and PDD (Post Dial Delay) trends across any historical period, gateway, or destination. 🔧

⚙️ According to the official VOS3000 V2.1.9.07 Manual, Section 2.9.2 (Historical Performance), this module aggregates call quality statistics over time to reveal performance trends. Unlike the real-time gateway status view, VOS3000 historical performance analysis shows patterns across days, weeks, or months — providing the context needed for carrier scorecarding and quality management. 📊

🎯 This guide covers the complete VOS3000 historical performance analysis system: quality metrics definitions, analysis configuration, trend interpretation, carrier scorecarding, and optimization strategies. For expert VOS3000 configuration assistance, contact us on WhatsApp at +8801911119966. 📱

🔐 Overview of VOS3000 Historical Performance Analysis

📞 The VOS3000 historical performance analysis module transforms raw CDR data into quality trend analysis. It calculates key performance indicators (KPIs) over configurable time periods — enabling operators to identify degrading routes, celebrate improving carriers, and make evidence-based routing decisions. 💡

🌐 Key quality metrics tracked by VOS3000 historical performance analysis:

📞 ASR (Answer Seizure Ratio): Percentage of calls that are successfully answered
⏱️ ACD (Average Call Duration): Mean duration of connected calls
⏱️ PDD (Post Dial Delay): Time from call initiation to first ringing/answer
📊 Call Volume: Total call attempts and connected calls
💰 Revenue per Call: Average revenue generation efficiency

Metric	Formula	Good Range	Poor Range
📞 ASR	Answered Calls / Total Calls × 100%	40% – 70%	< 30%
⏱️ ACD	Total Duration / Answered Calls	3 – 8 minutes	< 1 minute
⏱️ PDD	Setup time to ring/answer	2 – 6 seconds	> 10 seconds

⚙️ Step-by-Step VOS3000 Historical Performance Analysis

🔧 Running historical performance analysis in VOS3000 follows these steps:

Step 1: Navigate to Historical Performance 📡

🔐 Log in to VOS3000 Client with administrator credentials
📌 Navigate to: CDR Analysis → Historical Performance
🔍 The Historical Performance analysis form appears

Step 2: Configure Analysis Parameters 📋

Parameter	Description	Example
📅 Start Date	Analysis period beginning	2026-01-01
📅 End Date	Analysis period ending	2026-04-30
📊 Group By	Time aggregation interval	Day / Week / Month
📡 Gateway	Filter by specific gateway(s)	All or GW_USA_Premium
👤 Account	Filter by account	All or specific reseller
📞 Destination	Filter by prefix/country	92 (Pakistan), 91 (India)

Step 3: Interpret Performance Trends 📊

Trend Pattern	What It Means	Recommended Action
📈 ASR Rising	Route quality improving	Increase traffic allocation to this route
📉 ASR Falling	Route quality degrading	Investigate carrier, reduce allocation
📈 ACD Rising	Calls lasting longer	Good sign — revenue per call increasing
📉 ACD Falling	Calls ending sooner	Check for quality issues, premature disconnects
📈 PDD Rising	Setup delays increasing	Carrier network congestion or routing issues

📊 Carrier Scorecarding with VOS3000 Historical Performance

🏆 One of the most powerful applications of VOS3000 historical performance analysis is carrier/vendor scorecarding. By comparing performance metrics across multiple gateways over the same period, operators can objectively rank their carriers:

Carrier	ASR	ACD	PDD	Score
📡 Carrier A	62%	4.2 min	3.1 sec	⭐⭐⭐⭐⭐
📡 Carrier B	48%	3.8 min	5.4 sec	⭐⭐⭐⭐
📡 Carrier C	31%	2.1 min	8.9 sec	⭐⭐

🔄 Using VOS3000 Historical Performance for Route Optimization

📡 The primary business application of VOS3000 historical performance analysis is route optimization through evidence-based carrier management. By tracking ASR, ACD, and PDD trends for each termination gateway over time, operators can make informed decisions about traffic allocation. When a carrier’s ASR shows a consistent downward trend over two or more weeks, this signals a quality degradation that warrants investigation and potentially reducing traffic allocation to that route.

Conversely, carriers with improving or stable high ASR should receive increased traffic allocation to maximize call completion rates and revenue. The historical performance data transforms carrier management from a reactive process (waiting for customer complaints) to a proactive one (detecting quality changes before they impact customers). 📈

📊 Route optimization decision framework using historical performance:

Performance Pattern	Duration	Recommended Action
📉 ASR drop > 10%	1-2 days	Monitor, investigate root cause
📉 ASR drop > 15%	3-7 days	Reduce traffic, contact carrier, add backup route
📈 PDD increase > 30%	1 week+	Investigate network path, consider alternative route
📉 ACD drop > 20%	2+ weeks	Quality issue — check for audio problems, route congestion
📈 ASR consistently high	1 month+	Increase traffic allocation, negotiate better rates

📊 Performance Analysis and SLA Compliance

⚖️ For VoIP operators who provide Service Level Agreements (SLAs) to their customers, VOS3000 historical performance analysis is the tool for proving SLA compliance. SLAs typically specify minimum ASR thresholds, maximum PDD limits, and minimum ACD values for different destination categories. By running historical performance analysis for each SLA-covered destination over the contract period, operators can generate objective evidence of whether they met or exceeded the agreed quality standards.

This data is invaluable during SLA review meetings and can prevent unwarranted penalty charges from customers who claim quality was below standards. Operators should establish a regular cadence of SLA reporting — typically monthly — using the historical performance analysis module as the data source, supplemented by data from the report management system for financial SLA metrics. 📋

⚠️ Interpreting Performance Data Correctly

🔍 Correct interpretation of VOS3000 historical performance data requires understanding the context behind the numbers. A low ASR does not always indicate a carrier problem — it may reflect legitimate network conditions in the destination country (such as mobile phone switched off, busy lines, or network congestion during peak hours). Similarly, short ACD values may indicate that callers in certain cultural contexts naturally make shorter calls, not that call quality is poor. PDD values can be affected by the originating network’s dial plan configuration, not just the terminating carrier’s performance.

The key to meaningful analysis is comparing performance against your own historical baseline for the same destination, same time period, and same traffic pattern, rather than using generic industry benchmarks. Week-over-week and month-over-month comparisons of the same route provide the most actionable insights. 📊

💡 Best Practices for Historical Performance Analysis

Practice	Recommendation
📅 Weekly Reviews	Run performance analysis every Monday for previous week
🌍 By Destination	Analyze top 10 destinations separately — quality varies by route
📊 Set Thresholds	Define minimum ASR/ACD thresholds per destination
📈 Track Trends	Focus on week-over-week changes, not absolute values
📧 Share Reports	Send carrier scorecards to vendors monthly

💬 For performance analysis support, WhatsApp us at +8801911119966. 📱

❓ Frequently Asked Questions

❓ How does VOS3000 calculate ASR in historical performance?

📞 VOS3000 calculates ASR as: (Number of calls with status “Answered” / Total number of call attempts) × 100%. Calls with statuses like “Busy,” “No Answer,” “Cancel,” and failed calls are counted in the denominator but not the numerator. This is the industry-standard ASR calculation. The historical performance analysis aggregates this across the selected time period and grouping interval (day/week/month). 📊

❓ What is a good ASR value for international VoIP routes?

🎯 ASR benchmarks vary significantly by destination country and route type. Generally: Premium routes to developed countries (USA, UK, Western Europe) should achieve 50-70% ASR. Routes to developing markets may see 30-50% ASR. CLI routes typically have higher ASR than non-CLI. If ASR drops below 25% consistently, investigate carrier quality or potential fraud. Always compare against your own historical baseline for the same destination rather than generic benchmarks. 📈

❓ Can I set up automated alerts when performance drops?

🚨 Yes, VOS3000 provides mapping and routing alarms that can trigger when ASR, ACD, or call rate fall below configured thresholds. These alarms can send email notifications, SMS, or voice alerts. For historical trend-based alerting (e.g., “alert when ASR drops 10% week-over-week”), use external monitoring tools that pull data via the VOS3000 Web API. 📊

❓ How far back can I analyze historical performance?

📅 The analysis range is limited only by your CDR retention policy. Most operators retain 3-12 months of granular CDR data. For longer-term analysis, the report management scheduled reports can save monthly performance summaries indefinitely. Performance analysis on very large date ranges (6+ months) may take longer to generate. ⏱️

❓ What causes sudden ASR drops?

⚠️ Sudden ASR drops can be caused by: (1) Carrier network issues or outages, (2) Route congestion during peak hours, (3) Destination country regulatory blocks, (4) CLI suppression on routes requiring CLI, (5) Fraud attacks generating fake call attempts, (6) Incorrect routing configuration sending calls to wrong gateway. Use the call distribution analysis combined with gateway fail analysis to identify root causes. 🔧

❓ Can I compare multiple gateways in one analysis?

📊 Yes, the VOS3000 historical performance analysis allows selecting multiple gateways for comparison. The results show performance metrics side-by-side for each gateway, making it easy to identify your best and worst performing carriers. This is the recommended approach for carrier scorecarding and route optimization decisions. 📈

📊 Advanced Historical Performance Analysis Techniques

🔧 Beyond basic ASR/ACD/PDD tracking, experienced VOS3000 operators employ several advanced analysis techniques using historical performance data. One powerful technique is “same-day comparison” — running historical performance analysis for the same day of the week across multiple weeks (e.g., comparing all Mondays in a month) to establish a reliable baseline while controlling for day-of-week traffic variations. Another technique is “gateway pair analysis” — comparing two gateways that carry traffic to the same destination to determine which one consistently delivers better quality, enabling evidence-based routing decisions.

A third technique is “pre/post change analysis” — running historical performance for the period before and after a configuration change (such as a route modification or carrier switch) to objectively measure the impact of the change on call quality metrics. These systematic approaches transform historical performance analysis from a passive reporting tool into an active decision-making framework. 📈

📊 Advanced analysis methodology:

📅 Baseline Establishment: Run 30-day historical performance for each major destination to establish normal ASR/ACD/PDD ranges
📊 Threshold Definition: Set alert thresholds at 2 standard deviations from baseline for each metric
🔍 Anomaly Detection: Compare current week performance against baseline to identify statistically significant deviations
📡 Root Cause Analysis: When anomalies are detected, drill down by gateway and time-of-day to isolate the cause
🔄 Corrective Action: Adjust routing, contact carriers, or modify configuration based on analysis findings
📈 Verification: Re-run analysis after corrective action to confirm the issue is resolved

⚙️ Performance Analysis System Configuration

🔧 The VOS3000 historical performance analysis module relies on underlying CDR data for its calculations. The accuracy and granularity of the analysis depends on several system configuration factors. The CDR write interval parameter determines how quickly call records are written to the database — shorter intervals provide more real-time data but increase database load. The CDR retention policy determines how far back historical performance analysis can reach — operators who need 12-month trend analysis must ensure their CDR retention covers at least that period.

The database performance also affects analysis speed — queries on very large CDR datasets (millions of records) may take several minutes to complete. For optimal analysis performance, operators should maintain database indexes, regularly clean up old CDR data through the Data Maintenance module, and schedule large analyses during off-peak hours. The system parameter for CDR aggregation intervals can also be tuned to balance between analysis granularity and storage efficiency. ⏱️

📞 Need Expert Help with VOS3000 Historical Performance Analysis?

🔧 Effective VOS3000 historical performance analysis is the foundation of quality-driven routing and carrier management. Whether you need help configuring analysis parameters, interpreting trends, or setting up carrier scorecards, our team is ready to assist. 💬 WhatsApp: +8801911119966 — Get instant expert support for VOS3000 quality analytics.

📞 Still have questions about VOS3000 historical performance analysis? Reach out on WhatsApp at +8801911119966 — we provide professional VOS3000 installation, configuration, and quality analytics services worldwide. 🌐

📞 Need Professional VOS3000 Setup Support?

For professional VOS3000 installations and deployment, VOS3000 Server Rental Solution:

📱 WhatsApp: +8801911119966
🌐 Website: www.vos3000.com
🌐 Blog: multahost.com/blog
📥 Downloads: VOS3000 Downloads

VOS3000 Fee Decimal Precision, VOS3000 Illegal Call Recording, VOS3000 Zero Duration CDR, VOS3000 Server Hangup CDR, VOS3000 Gateway Route Prefix Billing

VOS3000 Zero Duration CDR Control Reliable DDoS Mitigation Setting

April 19, 2026April 19, 2026 king

VOS3000 Zero Duration CDR Control Reliable DDoS Mitigation Setting

VOS3000 zero duration CDR control is an essential parameter that determines whether the system generates call detail records for calls lasting zero seconds. The SERVER_BILLING_RECORD_ZERO_HOLD_TIME parameter, documented in §4.3.5.1 of the VOS3000 manual, becomes critically important during DDoS and SIP flood attacks when thousands of zero-duration calls can overwhelm your database. For emergency assistance with flood attack mitigation, contact us on WhatsApp: +8801911119966.

Under normal operations, zero-duration CDRs provide valuable audit data showing attempted calls that never connected. However, during an attack, these records can fill your database rapidly and degrade system performance. Understanding when to disable and re-enable VOS3000 zero duration CDR generation is a skill every administrator must master.

Understanding SERVER_BILLING_RECORD_ZERO_HOLD_TIME

The SERVER_BILLING_RECORD_ZERO_HOLD_TIME parameter controls CDR generation for calls with zero hold time — calls that were attempted but never established a media session. When enabled, every failed or rejected call produces a CDR entry. When disabled, only calls with actual duration are recorded, significantly reducing database writes during attack conditions.

📋 Parameter Detail	📋 Value
Parameter Name	SERVER_BILLING_RECORD_ZERO_HOLD_TIME
Default Value	1 (Enabled)
Location	System Settings → Billing Parameters
Manual Reference	§4.3.5.1
Primary Function	Controls CDR generation for zero-second calls

VOS3000 Zero Duration CDR During DDoS Attacks

During a SIP flood or DDoS attack, your VOS3000 server may receive thousands of call attempts per second. Most of these attempts result in zero-duration calls that are immediately rejected. If VOS3000 zero duration CDR recording is enabled, each rejected attempt creates a database record, potentially generating millions of CDR entries within hours. This can exhaust disk space, slow down MySQL queries, and ultimately crash the billing database.

📋 Attack Scenario	📋 CDRs with Setting ON	📋 CDRs with Setting OFF
100 calls/sec flood (1 hour)	360,000 zero-duration CDRs	0 zero-duration CDRs
500 calls/sec flood (1 hour)	1,800,000 zero-duration CDRs	0 zero-duration CDRs
1000 calls/sec flood (1 hour)	3,600,000 zero-duration CDRs	0 zero-duration CDRs

When to Disable VOS3000 Zero Duration CDR

Disabling the VOS3000 zero duration CDR parameter is an emergency measure that should be applied strategically. Understanding the right timing prevents both database damage and loss of important audit data.

📋 Condition	📋 Recommended Action	📋 Reason
Active DDoS/SIP flood detected	Set to 0 (Disable)	Prevent database overload from mass CDR inserts
Normal daily operations	Set to 1 (Enable)	Maintain complete audit trail for all call attempts
Post-attack recovery	Set to 1 (Enable)	Resume full audit logging for security review
Compliance audit period	Set to 1 (Enable)	Regulatory requirement for complete call records

If you are currently experiencing a flood attack and need immediate help, reach out on WhatsApp: +8801911119966. Our team can assist with real-time parameter adjustments and DDoS mitigation.

Step-by-Step Configuration Guide

Changing the VOS3000 zero duration CDR parameter requires access to the system settings panel. Follow these steps to modify SERVER_BILLING_RECORD_ZERO_HOLD_TIME safely.

📋 Step	📋 Action	📋 Details
1	Log in to VOS3000 Admin Panel	Use administrator credentials
2	Navigate to System Settings	System → Parameters → Billing
3	Locate Parameter	Find SERVER_BILLING_RECORD_ZERO_HOLD_TIME
4	Change Value	0 to disable, 1 to enable
5	Apply and Save	Confirm change takes effect immediately

Database Impact Analysis

The database impact of VOS3000 zero duration CDR generation during attacks cannot be overstated. Each CDR record consumes storage space and requires MySQL processing time for insertion and indexing. During sustained attacks, this can lead to disk I/O bottlenecks and degraded query performance for legitimate billing operations.

📋 Metric	📋 CDR Recording ON	📋 CDR Recording OFF
Database Insert Rate	High (every attempt recorded)	Low (only connected calls)
Disk Space Usage	Rapid growth during attacks	Stable and predictable
Query Performance	Degrades with table bloat	Maintains normal speed
Audit Completeness	Full record of all attempts	Connected calls only

For deeper insight into VOS3000 database management, refer to our VOS3000 Database Optimization and MySQL Performance Tuning Guide. You can also learn about CDR analysis in our VOS3000 CDR Analysis and Billing article.

Re-enabling Zero Duration CDR After an Attack

Once the DDoS or flood attack has been mitigated, re-enabling VOS3000 zero duration CDR recording is critical for restoring your full audit capabilities. Do not leave the parameter disabled longer than necessary, as zero-duration records serve important security and quality assurance functions during normal operations.

After re-enabling, verify that CDR generation is working by placing a test call that intentionally disconnects immediately, then check the CDR portal for the new record. This confirms the parameter change has taken effect and your audit trail is fully operational.

📋 Post-Attack Recovery Step	📋 Action	📋 Verification
Re-enable Parameter	Set SERVER_BILLING_RECORD_ZERO_HOLD_TIME = 1	Check system settings confirmed
Test CDR Generation	Place a brief test call that disconnects	Verify zero-duration CDR appears in portal
Review Attack Logs	Analyze attack CDRs for source IP patterns	Update firewall blocklists accordingly
Database Cleanup	Purge or archive excess attack CDRs	Confirm query performance restored

Frequently Asked Questions About VOS3000 Zero Duration CDR

What is SERVER_BILLING_RECORD_ZERO_HOLD_TIME in VOS3000?

SERVER_BILLING_RECORD_ZERO_HOLD_TIME is a VOS3000 system parameter documented at §4.3.5.1 that controls whether call detail records are generated for calls with zero hold time duration. When set to 1 (enabled, the default), every call attempt regardless of duration produces a CDR entry. When set to 0 (disabled), only calls with an actual connected duration greater than zero seconds generate CDR records. This parameter is essential for managing database load during attack scenarios.

Why should I disable VOS3000 zero duration CDR during a DDoS attack?

During a DDoS or SIP flood attack, your VOS3000 server receives thousands or tens of thousands of call attempts per second, nearly all of which result in zero-duration calls. If zero duration CDR recording is enabled, each of these failed attempts creates a database record, which can generate millions of CDR entries within hours. This massive volume of database inserts consumes disk I/O, exhausts storage space, slows down MySQL query performance, and can ultimately crash your billing database. Disabling this parameter during an attack prevents database overload.

How do I re-enable VOS3000 zero duration CDR after an attack ends?

To re-enable VOS3000 zero duration CDR recording after a DDoS attack, navigate to System Settings → Billing Parameters in the VOS3000 admin panel and change SERVER_BILLING_RECORD_ZERO_HOLD_TIME back to 1. After saving the change, verify it is working by placing a brief test call that disconnects immediately, then check the CDR portal for the new zero-duration record. It is important to re-enable this parameter as soon as the attack subsides to restore your complete audit trail for security and compliance purposes. Contact us on WhatsApp +8801911119966 for guided assistance.

Does disabling zero duration CDR affect billing accuracy?

Disabling VOS3000 zero duration CDR recording does not affect billing for actual connected calls, since those calls always have a duration greater than zero and will continue to generate CDR records normally. Only failed or rejected call attempts that result in zero hold time are excluded. Your revenue-generating call records remain complete and accurate. However, you will lose audit data about call attempts that never connected, which may be relevant for quality assurance and security monitoring.

What is the default value of SERVER_BILLING_RECORD_ZERO_HOLD_TIME?

The default value of SERVER_BILLING_RECORD_ZERO_HOLD_TIME in VOS3000 is 1, meaning zero-duration CDR recording is enabled by default. This ensures that out of the box, VOS3000 captures a complete audit trail including all call attempts. The default-on state supports security monitoring and regulatory compliance. Administrators should only change this to 0 as a temporary emergency measure during active DDoS or flood attacks, and restore it to 1 as soon as conditions normalize.

Can I automate VOS3000 zero duration CDR control during attacks?

VOS3000 does not natively automate the toggling of SERVER_BILLING_RECORD_ZERO_HOLD_TIME based on traffic conditions. However, administrators can implement external monitoring scripts that detect flood attack patterns using VOS3000 monitoring data and automatically adjust the parameter through the system API or command-line interface. This requires custom scripting and thorough testing to avoid unintended consequences. Our team can help design and implement such automated DDoS response mechanisms — reach out on WhatsApp +8801911119966 to discuss your requirements.

Get Professional Help with VOS3000 Zero Duration CDR Control

Properly managing VOS3000 zero duration CDR settings during attack conditions and normal operations is essential for both database performance and audit compliance. Our experienced VOS3000 engineers can help you configure SERVER_BILLING_RECORD_ZERO_HOLD_TIME, implement DDoS mitigation strategies, and set up monitoring alerts that warn you before database overload occurs.

Contact us on WhatsApp: +8801911119966

Whether you are currently under attack and need emergency parameter changes, or you want to proactively configure your VOS3000 for optimal resilience, our team provides 24/7 support. We also offer complete VOS3000 server setup, security hardening, and ongoing management services tailored to your traffic requirements.

📞 Need Professional VOS3000 Setup Support?

For professional VOS3000 installations and deployment, VOS3000 Server Rental Solution:

📱 WhatsApp: +8801911119966
🌐 Website: www.vos3000.com
🌐 Blog: multahost.com/blog
📥 Downloads: VOS3000 Downloads

SIP ALG Problems, VOS3000 gateway configuration, VoIP Fraud Prevention, VOS3000 Media Proxy, VOS3000 Call Termination Reasons

VOS3000 Media Proxy and System Parameters: Complete Important Configuration Reference

March 31, 2026March 31, 2026 king

VOS3000 Media Proxy and System Parameters: Complete Configuration Reference

VOS3000 media proxy and system parameters control the core functionality of your VoIP softswitch. Proper configuration of these parameters determines call quality, NAT traversal success, security levels, and overall system performance. This comprehensive reference guide covers all critical parameters from the official VOS3000 2.1.9.07 manual, explaining their functions and recommended configurations for different deployment scenarios.

📞 Need help configuring VOS3000 parameters? WhatsApp: +8801911119966

📡 Understanding Media Proxy in VOS3000

Media proxy determines whether RTP (Real-time Transport Protocol) voice packets flow directly between endpoints or through the VOS3000 server. This decision has significant implications for NAT traversal, audio quality, server resource usage, and call reliability.

📊 VOS3000 Media Proxy Modes

The SS_MEDIAPROXYMODE parameter controls media proxy behavior with four distinct modes:

Mode	Behavior	Server Load	Best Use Case
Off	Never proxy media; RTP flows directly between endpoints	Lowest	Public IP endpoints, no NAT issues
On	Always proxy all media through server	Highest	Troubleshooting, maximum control
Auto	Intelligent decision based on conditions	Variable	Mixed environments, recommended
Must On	Forced proxy regardless of other settings	Highest	Specific debugging scenarios only

⚙️ Media Proxy Auto Mode Decision Logic (VOS3000 Media Proxy)

When SS_MEDIAPROXYMODE is set to “Auto,” VOS3000 follows a precise decision algorithm to determine whether media proxy is needed:

Media Proxy Decision Steps (Auto Mode):

Step 1: Check if caller or callee MUST have media proxy
        ├── If gateway/phone has Media Proxy = Must On
        └── Result: ENABLE media proxy

Step 2: Check if caller or callee has Media Proxy disabled
        ├── If gateway/phone has Media Proxy = Off
        └── Result: DISABLE media proxy

Step 3: Check if caller or callee has Media Proxy enabled
        ├── If gateway/phone has Media Proxy = On
        └── Result: ENABLE media proxy

Step 4: Check if callee has local ring enabled
        ├── Local ring requires media proxy for ringback tone
        └── Result: ENABLE media proxy

Step 5: Check for dynamic registration with encryption
        ├── If phone/gateway uses dynamic register AND encryption
        └── Result: ENABLE media proxy

Step 6: Check cross-network routing (SS_MEDIAPROXYBETWEENNET)
        ├── If caller and callee from different networks
        └── Result: ENABLE media proxy

Step 7: Check NAT conditions (SS_MEDIAPROXYBEHINDNAT)
        ├── If phone and gateway in same NAT, SS_MEDIAPROXYSAMENAT = On
        ├── If phone and gateway in different NAT, one in private network
        └── Result: ENABLE media proxy

Step 8: Default action
        └── Result: DISABLE media proxy

🔧 Configuring Media Proxy Parameters

📍 Location in VOS3000 Client

Navigation Path:
Operation Management → Softswitch Management → Additional Settings → System Parameter

Parameter Name: SS_MEDIAPROXYMODE
Valid Values: Off, On, Auto, Must On
Default Value: Auto

Related Parameters:
┌─────────────────────────────────────────────────────────────┐
│ Parameter Name                  │ Description               │
├─────────────────────────────────────────────────────────────┤
│ SS_MEDIAPROXYBETWEENNET        │ Proxy for cross-network   │
│ SS_MEDIAPROXYBEHINDNAT         │ Proxy for behind-NAT      │
│ SS_MEDIAPROXYSAMENAT           │ Proxy for same-NAT        │
└─────────────────────────────────────────────────────────────┘

📡 RTP Port Configuration (VOS3000 Media Proxy)

RTP port configuration determines which UDP ports VOS3000 uses for voice media streams. Proper configuration is essential for firewall rules and capacity planning. VOS3000 Media Proxy

📊 RTP Port Parameters VOS3000 Media Proxy

Parameter	Default Value	Description
SS_RTP_PORT_RANGE	10000,39999	UDP port range for RTP media streams
SS_H245_PORT_RANGE	10000,39999	H.245 port range for H.323 calls
IVR_RTP_PORT	40000,47999	RTP port range for IVR services

⚙️ RTP Port Sizing Calculation

RTP Port Capacity Planning:

Each concurrent call uses 2 RTP ports (one for each direction)
Port Range: 10000-39999 = 30,000 ports
Maximum Concurrent Calls = 30,000 / 2 = 15,000 calls

However, consider:
- Each port allocation has overhead
- IVR services need separate port range
- H.323 calls share same range

Recommended Configuration by Capacity:
┌──────────────────────────────────────────────────────────────┐
│ Expected Capacity │ RTP Port Range    │ IVR Port Range      │
├──────────────────────────────────────────────────────────────┤
│ Small (<500 CC)   │ 10000-19999       │ 40000-40999         │
│ Medium (500-2000) │ 10000-29999       │ 40000-41999         │
│ Large (2000-5000) │ 10000-39999       │ 40000-44999         │
│ Enterprise (5000+)│ 10000-59999       │ 60000-64999         │
└──────────────────────────────────────────────────────────────┘

Firewall Rule Example:
iptables -A INPUT -p udp --dport 10000:39999 -j ACCEPT
iptables -A INPUT -p udp --dport 40000:47999 -j ACCEPT

🔑 SIP Parameters Reference – VOS3000 Media Proxy

SIP parameters control how VOS3000 handles SIP signaling, authentication, and session management. These parameters directly impact call setup success and session reliability.

📊 Critical SIP Parameters

Parameter	Default	Purpose
SS_SIP_NAT_KEEP_ALIVE_MESSAGE	HELLO	Content of NAT keep-alive message
SS_SIP_NAT_KEEP_ALIVE_PERIOD	30	Keep-alive interval in seconds (10-86400)
SS_SIP_NAT_KEEP_ALIVE_SEND_INTERVAL	500	Interval between sending keep-alives (ms)
SS_SIP_NAT_KEEP_ALIVE_SEND_ONE_TIME	3000	Number of keep-alives sent per batch
SS_SIP_SESSION_TTL	1800	Session Timer TTL in seconds
SS_SIP_SESSION_UPDATE_SEGMENT	300	Session update interval in seconds
SS_SIP_RESEND_INTERVAL	0.5,1,2,4,4,4,4,4,4,4	SIP message resend intervals (seconds)
SS_SIP_NO_TIMER_REINVITE_INTERVAL	7200	Max call time for non-timer SIP clients

⚙️ NAT Keep-Alive Configuration

NAT Keep-Alive Purpose:
- Maintains NAT binding for devices behind NAT
- Prevents one-way audio caused by expired bindings
- Essential for devices that don't support SIP Timer

How It Works:
1. VOS3000 sends UDP message to registered device IP
2. Message content = SS_SIP_NAT_KEEP_ALIVE_MESSAGE (default: "HELLO")
3. Sent every SS_SIP_NAT_KEEP_ALIVE_PERIOD seconds (default: 30)
4. This keeps the NAT mapping active

Configuration Example:
SS_SIP_NAT_KEEP_ALIVE_MESSAGE = "HELLO"
SS_SIP_NAT_KEEP_ALIVE_PERIOD = 30
SS_SIP_NAT_KEEP_ALIVE_SEND_INTERVAL = 500
SS_SIP_NAT_KEEP_ALIVE_SEND_ONE_TIME = 3000

This means:
- Send "HELLO" to each device every 30 seconds
- Wait 500ms between sending to different devices
- Process 3000 devices in each batch

Scaling Notes:
- 3000 devices × 500ms = 25 minutes to process all
- Adjust SEND_ONE_TIME for large deployments
- Increase SEND_INTERVAL if network is slow

🔐 Authentication Parameters

Authentication parameters control how VOS3000 handles SIP authentication challenges and account lockout policies for security.

📊 Authentication Security Parameters

Parameter	Default	Purpose
SS_AUTHENTICATION_MAX_RETRY	6	Max auth retries before suspension (0-999)
SS_AUTHENTICATION_FAILED_SUSPEND	180	Suspension duration in seconds (60-3600)
SS_SIP_AUTHENTICATION_CODE	Unauthorized(401)	SIP response code for auth challenge
SS_SIP_AUTHENTICATION_TIMEOUT	10	Timeout for SIP authentication in seconds
SS_SIP_AUTHENTICATION_RETRY	6	SIP auth retry count for 401/407 responses

⚙️ Authentication Lockout Configuration

Security Configuration Example:

For High-Security Environments:
SS_AUTHENTICATION_MAX_RETRY = 3
SS_AUTHENTICATION_FAILED_SUSPEND = 300

For Standard Environments:
SS_AUTHENTICATION_MAX_RETRY = 6
SS_AUTHENTICATION_FAILED_SUSPEND = 180

For Relaxed Environments (trusted networks only):
SS_AUTHENTICATION_MAX_RETRY = 10
SS_AUTHENTICATION_FAILED_SUSPEND = 60

How Lockout Works:
1. Device attempts registration with wrong password
2. VOS3000 returns 401 Unauthorized
3. Device retries (up to SS_AUTHENTICATION_MAX_RETRY times)
4. After max retries, IP is added to temporary block list
5. Block lasts for SS_AUTHENTICATION_FAILED_SUSPEND seconds
6. After timeout, device can retry

This protects against:
- Brute force password attacks
- SIP flood attacks
- Credential guessing
- Automated hacking tools

📊 Session Timer Configuration (VOS3000 Media Proxy)

Session timers ensure that hung calls are detected and cleaned up, preventing “ghost calls” and billing errors.

⚙️ Session Timer Parameters

Session Timer Configuration:

SS_SIP_SESSION_TTL = 1800 (30 minutes)
SS_SIP_SESSION_UPDATE_SEGMENT = 300 (5 minutes)
SS_SIP_NO_TIMER_REINVITE_INTERVAL = 7200 (2 hours)

How SIP Session Timer Works:
1. During call setup, session timer is negotiated
2. VOS3000 sends UPDATE or re-INVITE at interval
3. If no response, session is considered dead
4. Call is terminated and CDR is generated

For Non-Timer-Capable Clients:
- SS_SIP_NO_TIMER_REINVITE_INTERVAL sets max call time
- After this duration, call is terminated
- Prevents ultra-long "zombie" calls

Recommended Values:
┌────────────────────────────────────────────────────────────┐
│ Scenario           │ TTL  │ Update Segment │ Max No-Timer │
├────────────────────────────────────────────────────────────┤
│ Standard VoIP      │ 1800 │ 300            │ 7200         │
│ High-Volume Trunk  │ 3600 │ 600            │ 14400        │
│ Calling Card       │ 900  │ 180            │ 3600         │
│ Enterprise PBX     │ 1800 │ 300            │ 28800        │
└────────────────────────────────────────────────────────────┘

Session Timer Benefits:
- Detects hung calls automatically
- Prevents billing discrepancies
- Reduces "ghost call" complaints
- Frees system resources

🎯 H.323 Parameters Reference

For environments using H.323 protocol, VOS3000 provides comprehensive parameter controls.

📊 Critical H.323 Parameters

Parameter	Default	Purpose
SS_H245_PORT_RANGE	10000,39999	Port range for H.245 control channel
SS_H323_DTMF_METHOD	H.245 alphanumeric	Default DTMF transmission method
SS_H323_TIMEOUT_ALERTING	120	Timeout for alerting state (seconds)
SS_H323_TIMEOUT_CALLPROCEEDING	20	Timeout for call proceeding (seconds)
SS_H323_TIMEOUT_SETUP	5	Timeout for call setup (seconds)

📈 Quality of Service (QoS) Parameters

QoS parameters control the DSCP marking on IP packets for prioritization in managed networks.

⚙️ QoS Configuration

QoS Parameters:

SS_QOS_SIGNAL = 0xa0 (default)
- DSCP marking for SIP/H.323 signaling packets
- Hex value applied to IP header ToS field

SS_QOS_RTP = 0xa0 (default)
- DSCP marking for RTP media packets
- Hex value applied to IP header ToS field

DSCP Value Reference:
┌─────────────────────────────────────────────────────────────┐
│ Hex Value │ Binary  │ DSCP Class        │ Description      │
├─────────────────────────────────────────────────────────────┤
│ 0x00      │ 000000  │ Best Effort       │ Default, no QoS  │
│ 0x20      │ 001000  │ CS1               │ Scavenger        │
│ 0x40      │ 010000  │ CS2               │ OAM              │
│ 0x60      │ 011000  │ CS3               │ Signaling        │
│ 0x80      │ 100000  │ CS4               │ Real-time        │
│ 0xa0      │ 101000  │ CS5 / EF          │ Voice (default)  │
│ 0xc0      │ 110000  │ CS6               │ Network control  │
└─────────────────────────────────────────────────────────────┘

When to Configure:
- Only in managed networks with QoS policies
- Coordinate with network team on DSCP values
- Match router/switch QoS configuration

📊 Billing and CDR Parameters

These parameters control billing precision and CDR generation behavior. VOS3000 Media Proxy

⚙️ Critical Billing Parameters

Parameter	Default	Purpose
SERVER_BILLING_HOLD_TIME_PRECISION	50	Billing time precision in milliseconds
SERVER_MAX_CDR_PENDING_LIST_LENGTH	100000	Max pending CDR queue length
SERVER_CDR_FILE_WRITE_MAX	2048	Max CDR files to retain
SERVER_CDR_FILE_WRITE_INTERVAL	60	CDR file write interval (seconds)

📖 VOS3000 Extended Firewall Configuration
📖 VOS3000 One-Way Audio Troubleshooting
📖 VOS3000 Server Configuration Guide
📖 VOS3000 FAQ Based on Official Manual
📖 VOS3000 Downloads

❓ Frequently Asked Questions

Should I set media proxy to On or Auto?

Auto mode is recommended for most deployments. It intelligently enables media proxy only when needed (NAT traversal, encryption, cross-network calls) while allowing direct RTP when possible. This provides the best balance of reliability and server resource usage.

How do I know if my RTP port range is sufficient?

Calculate: Each concurrent call uses 2 RTP ports. With default range 10000-39999 (30,000 ports), you can support 15,000 concurrent calls. Monitor port usage through system performance monitoring. If you see port allocation errors, increase the range or reduce concurrent call load.

Why do calls drop at 30 seconds?

This typically indicates SIP session timer or NAT binding issues. Check SS_SIP_SESSION_TTL and ensure NAT keep-alive is configured. The 30-second timeout often corresponds to NAT binding expiry when keep-alives are not working.

What is the best authentication retry setting?

For most environments, the default of 6 retries with 180-second suspension works well. For high-security environments, reduce to 3 retries with longer suspension (300+ seconds). Balance security against false positives from legitimate users mistyping passwords.

How do I troubleshoot media proxy issues?

Use Debug Trace in VOS3000 to capture SIP and SDP messages. Check if media proxy is being invoked (look at the c= line in SDP). Verify that RTP ports are within configured range. Check firewall rules allow both signaling and RTP ports.

📞 Get Expert Help with VOS3000 Configuration

Need assistance optimizing VOS3000 parameters for your specific deployment? Our team provides professional VOS3000 installation, configuration, and performance tuning services.

📱 WhatsApp: +8801911119966

📞 Need Professional VOS3000 Setup Support?

For professional VOS3000 installations and deployment, VOS3000 Server Rental Solution:

📱 WhatsApp: +8801911119966
🌐 Website: www.vos3000.com
🌐 Blog: multahost.com/blog
📥 Downloads: VOS3000 Downloads

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VOS3000-FAQ-VOS3000-Original_English_Manual_Guide_Download, VOS3000 Server

VOS3000 Softswitch FAQ – Complete Technical Guide Based on Official Manual

December 27, 2025March 22, 2026 king

VOS3000 Softswitch FAQ – Complete Technical Guide Based on Official Manual

This article provides a comprehensive list of frequently asked questions (FAQs) strictly based on the official VOS3000 Soft switch PDF Manual (V2.1.9.07). All explanations reflect real system behavior, configuration options, and operational logic described in the documentation, including routing, billing, SIP signaling, CDR handling, alarms, and system parameters.

1. What is VOS3000 Soft switch?

VOS3000 is a carrier-grade VoIP soft switch platform designed for telecom operators and VoIP service providers. It integrates call control, routing management, billing, account management, SIP signaling, and CDR processing into a unified system.

2. Which operating system is required for VOS3000?

According to the manual, VOS3000 is deployed on Linux server environments. Stable Linux distributions are recommended to ensure performance, reliability, and compatibility with system services.

3. What protocols are supported by VOS3000?

VOS3000 supports SIP and H.323 signaling protocols. These protocols are used for call setup, termination, authentication, and interoperability with gateways, carriers, and SIP devices.

4. How does call routing work in VOS3000?

Call routing in VOS3000 is prefix-based. The system compares destination number prefixes with routing rules, gateway priorities, rate tables, and availability to determine the most suitable route.

5. Does VOS3000 support Least Cost Routing (LCR)?

Yes. VOS3000 includes Least Cost Routing functionality that selects routes based on the lowest rate per second, while also considering gateway priority and routing quality.

6. What is a routing gateway in VOS3000?

A routing gateway represents an outbound route toward a vendor or carrier. It includes IP address, protocol settings, line limits, billing account association, and routing priority.

7. What is a mapping gateway?

A mapping gateway represents inbound traffic sources. It maps incoming calls from a specific IP or device to an account and applies authentication, billing, and routing rules.

8. What is a gateway group?

Gateway groups are used to combine multiple routing and mapping gateways into a single logical group, allowing capacity control, routing restrictions, and simplified management.

9. Can VOS3000 limit concurrent calls?

Yes. VOS3000 allows administrators to set line limits at gateway, gateway group, and account levels to restrict the number of concurrent calls.

10. How does VOS3000 handle call failover?

If a routing gateway fails or becomes unavailable, VOS3000 automatically attempts the next available route based on priority and routing rules.

11. How does VOS3000 generate Call Detail Records (CDR)?

VOS3000 generates a CDR for each call attempt. The record includes caller number, callee number, start time, end time, duration, gateway IDs, billing mode, and termination reason.

12. Where are CDR files stored?

When enabled, CDRs are written to text files in the CDR directory under the VOS3000 installation path. Files are generated hourly using a timestamp-based naming format.

13. Does VOS3000 support real-time billing?

Yes. VOS3000 performs real-time billing by deducting call charges from account balances during the call. Calls are terminated automatically if balance limits are exceeded.

14. What billing modes are supported?

Billing can be performed by phone number, gateway ID, or phone card, depending on account configuration and call source.

15. What is an account in VOS3000?

An account represents a customer or vendor entity. It controls balance, billing rules, routing permissions, credit limits, and authentication parameters.

16. What is an agent account?

Agent accounts can have sub-accounts. Charges incurred by sub-accounts are aggregated to the agent account, allowing hierarchical billing structures.

17. How are rate tables used?

Rate tables define call pricing based on destination prefixes. They are assigned to accounts and routing gateways to calculate call charges.

18. Can VOS3000 block specific destinations?

Yes. Forbidden prefixes can be configured to block calls to specific destinations, such as premium or high-risk numbers.

19. Does VOS3000 support number translation?

VOS3000 supports number transformation rules that allow adding, removing, or replacing digits before routing or billing.

20. How does VOS3000 authenticate calls?

Authentication can be performed using SIP credentials or IP-based authentication, depending on the gateway and account configuration.

21. Does VOS3000 support SIP OPTIONS monitoring?

Yes. SIP OPTIONS messages can be sent periodically to detect gateway availability. If a gateway fails OPTIONS checks, it is temporarily excluded from routing.

22. What codecs are supported?

VOS3000 supports common VoIP codecs such as G.711 and G.729, configurable at gateway and protocol levels.

23. How does VOS3000 handle NAT?

NAT traversal features include keep-alive messages, SDP address handling, and media proxy settings to ensure stable SIP communication.

24. What is call duration precision?

The system allows configuration of billing time precision, determining how call duration is rounded for billing purposes.

25. Can VOS3000 restrict calls by time?

Yes. Work calendars and time-based rules allow administrators to restrict calls during specific hours or non-working periods.

26. What alarm features are available?

VOS3000 includes alarm monitoring for gateway status, balance thresholds, system errors, and abnormal traffic conditions.

27. How are logs managed?

System logs and history alarm tables are stored in the database and can be accessed through the data maintenance interface.

28. Can VOS3000 prevent overdraft?

Anti-overdraft mechanisms prevent accounts from exceeding allowed balances by checking credit availability before and during calls.

29. What is bilateral reconciliation?

Bilateral reconciliation compares billing amounts between customers and vendors to detect deviations automatically.

30. Does VOS3000 support LRN lookup?

Yes. For number portability, VOS3000 supports LRN queries to external servers and can route calls based on returned LRN numbers.

31. Can VOS3000 forward call status via HTTP?

HTTP call status notifications can be enabled to send call events to external systems for integration purposes.

32. What is rate limiting in VOS3000?

Rate limiting restricts the number of call attempts within a defined period to protect the system from abuse or attacks.

33. Does VOS3000 support SIP header manipulation?

Yes. SIP headers such as P-Asserted-Identity and P-Preferred-Identity can be passed through, modified, or replaced based on configuration.

34. How does VOS3000 handle call failures?

Call failure causes are recorded in CDRs and categorized by server-side, SIP device, or network-related termination reasons.

35. What is a package in VOS3000 billing?

Packages define free duration, free money amount, rent period, and minimum consumption rules applied before standard billing.

36. How are packages prioritized?

Package priority determines which package takes effect first when multiple packages are assigned to an account.

37. Does VOS3000 support payment and recharge?

Yes. Payments can be applied manually or via phone cards, affecting account balance and expiration.

38. Can VOS3000 generate billing reports?

Billing reports include account balance, gateway bills, phone bills, area details, and statistical summaries.

39. What is the operation wizard?

The operation wizard provides guided steps to quickly configure common scenarios such as gateway-to-gateway or phone-to-routing setups.

40. Can VOS3000 manage multiple IP addresses per gateway?

Yes. Multiple IPs and ports can be configured per gateway, with automatic selection based on availability.

41. What is SIP authentication retry?

SIP authentication retry defines how many times the system retries authentication when receiving unauthorized responses.

42. Does VOS3000 support voicemail?

Voicemail features include configurable storage duration, maximum message count, and default welcome prompts.

43. What is call PDD in VOS3000?

Post Dial Delay (PDD) measures the time from call initiation to call connection and is recorded in CDRs.

44. Can VOS3000 suppress zero-duration CDRs?

Yes. The system can be configured to ignore CDRs with zero hold time to reduce unnecessary records.

45. Does VOS3000 support multi-currency billing?

Billing precision and monetary units can be configured to support different currency formats.

46. What is signaling tracing?

Signaling tracing allows administrators to trace call setup, registration, and termination messages for troubleshooting.

47. Can VOS3000 handle high call volumes?

VOS3000 is designed for carrier environments and can handle high concurrent call volumes when deployed on appropriate hardware.

48. Does VOS3000 support system backups?

Database backup and maintenance functions help protect configuration, billing, and call data.

49. How is system performance monitored?

Performance monitoring includes gateway status, call statistics, alarm monitoring, and traffic analysis.

50. Who should use VOS3000 Soft switch?

VOS3000 is suitable for VoIP carriers, telecom operators, wholesalers, and enterprises requiring advanced call routing and billing control.

Full manual download link : https://vos3000.com/downloads/VOS3000_21907_Manual_Original_English_Full_VOS3000.Com_PDF.pdf

Please contact in whatsapp for more info : +8801911119966 (whatsapp text only)

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VOS3000 VoIP Softswitch – Complete Guide, Features, Installation & Security

VOS3000 Historical Performance Analysis: Complete ASR ACD Quality Metrics Guide

Table of Contents

🔐 Overview of VOS3000 Historical Performance Analysis

⚙️ Step-by-Step VOS3000 Historical Performance Analysis

Step 1: Navigate to Historical Performance 📡

Step 2: Configure Analysis Parameters 📋

Step 3: Interpret Performance Trends 📊

📊 Carrier Scorecarding with VOS3000 Historical Performance

🔄 Using VOS3000 Historical Performance for Route Optimization

📊 Performance Analysis and SLA Compliance

⚠️ Interpreting Performance Data Correctly

💡 Best Practices for Historical Performance Analysis

❓ Frequently Asked Questions

❓ How does VOS3000 calculate ASR in historical performance?

❓ What is a good ASR value for international VoIP routes?

❓ Can I set up automated alerts when performance drops?

❓ How far back can I analyze historical performance?

❓ What causes sudden ASR drops?

❓ Can I compare multiple gateways in one analysis?

📊 Advanced Historical Performance Analysis Techniques

⚙️ Performance Analysis System Configuration

📞 Need Expert Help with VOS3000 Historical Performance Analysis?

📚 Related Resources

📞 Need Professional VOS3000 Setup Support?

VOS3000 Zero Duration CDR Control Reliable DDoS Mitigation Setting

Table of Contents

Understanding SERVER_BILLING_RECORD_ZERO_HOLD_TIME

VOS3000 Zero Duration CDR During DDoS Attacks

When to Disable VOS3000 Zero Duration CDR

Step-by-Step Configuration Guide

Database Impact Analysis

Re-enabling Zero Duration CDR After an Attack

Related Resources

Frequently Asked Questions About VOS3000 Zero Duration CDR

What is SERVER_BILLING_RECORD_ZERO_HOLD_TIME in VOS3000?

Why should I disable VOS3000 zero duration CDR during a DDoS attack?

How do I re-enable VOS3000 zero duration CDR after an attack ends?

Does disabling zero duration CDR affect billing accuracy?

What is the default value of SERVER_BILLING_RECORD_ZERO_HOLD_TIME?

Can I automate VOS3000 zero duration CDR control during attacks?

Get Professional Help with VOS3000 Zero Duration CDR Control

📞 Need Professional VOS3000 Setup Support?

VOS3000 Media Proxy and System Parameters: Complete Configuration Reference

Table of Contents

📡 Understanding Media Proxy in VOS3000

📊 VOS3000 Media Proxy Modes

⚙️ Media Proxy Auto Mode Decision Logic (VOS3000 Media Proxy)

🔧 Configuring Media Proxy Parameters

📍 Location in VOS3000 Client

📡 RTP Port Configuration (VOS3000 Media Proxy)

📊 RTP Port Parameters VOS3000 Media Proxy

⚙️ RTP Port Sizing Calculation

🔑 SIP Parameters Reference – VOS3000 Media Proxy

📊 Critical SIP Parameters

⚙️ NAT Keep-Alive Configuration

🔐 Authentication Parameters

📊 Authentication Security Parameters

⚙️ Authentication Lockout Configuration

📊 Session Timer Configuration (VOS3000 Media Proxy)

⚙️ Session Timer Parameters

🎯 H.323 Parameters Reference

📊 Critical H.323 Parameters

📈 Quality of Service (QoS) Parameters

⚙️ QoS Configuration

📊 Billing and CDR Parameters

⚙️ Critical Billing Parameters

🔗 Related Resources – VOS3000 Media Proxy

❓ Frequently Asked Questions

Should I set media proxy to On or Auto?

How do I know if my RTP port range is sufficient?

Why do calls drop at 30 seconds?

What is the best authentication retry setting?

How do I troubleshoot media proxy issues?

📞 Get Expert Help with VOS3000 Configuration

📞 Need Professional VOS3000 Setup Support?

VOS3000 Softswitch FAQ – Complete Technical Guide Based on Official Manual

Table of Contents

1. What is VOS3000 Soft switch?

2. Which operating system is required for VOS3000?

3. What protocols are supported by VOS3000?