VOS3000 error codes reference is essential for VoIP administrators managing softswitch operations. From SIP signaling errors to client connection problems, understanding these error codes enables rapid diagnosis and resolution of issues that impact call quality and business operations. This comprehensive guide provides detailed explanations and solutions for the most common VOS3000 error codes.
VOS3000 errors fall into several categories based on their origin and impact:
| Error Code | Name | Cause | Solution |
|---|---|---|---|
| 503 | Service Unavailable | Server overloaded, gateway down | Check gateway status, reduce load |
| 404 | Not Found | Invalid destination, routing issue | Verify prefix configuration |
| 486 | Busy Here | Destination busy, line limit reached | Increase line limit or try later |
| 487 | Request Terminated | Call cancelled by user | Normal operation, no action needed |
| 408 | Request Timeout | No response from gateway | Check network, gateway status |
| 403 | Forbidden | Authentication failure, IP blocked | Verify credentials, check ACL |
| 480 | Temporarily Unavailable | Endpoint not registered | Check endpoint registration |
| 500 | Server Internal Error | System configuration issue | Check logs, restart services |
503 Service Unavailable is one of the most common VOS3000 error codes:
Common Causes:
Troubleshooting Steps:
service vos3000core statusThis common VOS3000 client error indicates connectivity issues:
| Cause | Solution |
|---|---|
| Firewall blocking port 8021 | Open port 8021 TCP in firewall |
| Incorrect server IP | Verify server IP in client settings |
| Softswitch service stopped | Restart vos3000core service |
| Network connectivity | Ping server, check routing |
| UUID mismatch | Verify license UUID matches server |
The VOS3000 verify version failed error indicates license or compatibility issues:
One-way audio is a critical VOS3000 error affecting call quality:
| Scenario | Cause | Solution |
|---|---|---|
| Audio one direction only | NAT traversal issue | Enable media proxy |
| No audio from gateway | RTP port blocked | Open RTP port range |
| No audio from client | Client behind symmetric NAT | Configure STUN/TURN |
| Intermittent audio | Codec mismatch | Verify codec configuration |
The VOS3000 NoAvailableRouter error prevents call completion:
Root Causes:
Resolution Steps:
| Error | Cause | Solution |
|---|---|---|
| MySQL connection failed | Service down, credentials wrong | Restart MySQL, verify credentials |
| Database disk full | CDR accumulation | Cleanup old CDRs, expand storage |
| Query timeout | Unoptimized queries | Optimize tables, add indexes |
| Table corrupted | System crash, disk errors | Repair tables, restore from backup |
Internal Resources:
External Resources:
Q1: How do I check VOS3000 logs for errors?
💡 A1: VOS3000 logs are located in /home/vos3000/log/ directory. Use tail -f /home/vos3000/log/vos3000.log to monitor in real-time.
Q2: What causes 503 error even when gateway is available?
💡 A2: Line limit may be reached, or gateway priority configuration may be incorrect. Check gateway line usage and priority settings.
Q3: How do I fix one-way audio permanently?
💡 A3: Enable media proxy in relay mode, configure NAT keepalive, and ensure RTP ports are open. Test with bypass mode if both endpoints are on same network.
Q4: Why does client show Chinese language suddenly?
💡 A4: Language file may be corrupted or system locale changed. Reinstall client or modify the language configuration file.
Q5: What does retCode -10007 mean in API?
💡 A5: Error code -10007 indicates “Account not found” when the specified account does not exist in the system database.
For professional VOS3000 troubleshooting and error resolution:
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🌐 Website: www.vos3000.com
🌐 Blog: multahost.com/blog
📥 Downloads: VOS3000 Downloads
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