SIP ALG Problems, VOS3000 gateway configuration, VoIP Fraud Prevention, VOS3000 Media Proxy, VOS3000 Call Termination Reasons
VOS3000 gateway configuration is the foundation of any successful VoIP wholesale operation. Understanding the difference between routing gateways and mapping gateways, and configuring them correctly, determines whether your VoIP traffic flows smoothly or encounters constant problems. This comprehensive guide covers all aspects of VOS3000 gateway setup based on the official VOS3000 2.1.9.07 manual documentation.
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VOS3000 uses two fundamental gateway types that serve different purposes in the call flow architecture. Understanding the distinction between these gateway types is essential for proper system configuration and troubleshooting. (VOS3000 Gateway Configuration)
| Aspect | Mapping Gateway | Routing Gateway |
|---|---|---|
| Purpose | Origination – receives calls from customers | Termination – sends calls to vendors |
| Direction | Inbound to VOS3000 | Outbound from VOS3000 |
| Associated With | Customer accounts | Vendor/termination providers |
| Billing Role | Generates revenue (charges customer) | Incurs cost (pays vendor) |
| Location in GUI | Operation Management → Gateway Operation → Mapping Gateway | Operation Management → Gateway Operation → Routing Gateway |
┌─────────────────────┐
│ │
Customer ────────▶│ Mapping Gateway │
(Origination) │ │
└──────────┬──────────┘
│
▼
┌─────────────────────┐
│ │
│ VOS3000 │
│ (Softswitch) │
│ │
└──────────┬──────────┘
│
▼
┌─────────────────────┐
│ │
│ Routing Gateway │───────▶ Vendor/Carrier
│ │ (Termination)
└─────────────────────┘
Routing gateways are configured to send calls to termination providers and vendors. Each routing gateway represents a destination for outbound calls and contains all parameters needed for proper call routing and billing.
| Parameter | Description | Configuration Notes |
|---|---|---|
| Gateway Name | Unique identifier for the gateway | Use descriptive names like “VendorA_SIP”, “CarrierB_H323” |
| Gateway Type | Static, Dynamic, or Registration | Static=IP-based, Dynamic=register-based, Registration=outbound register |
| Protocol | SIP or H.323 | Match the protocol supported by your vendor |
| IP Address | Destination gateway IP | For static gateways, enter the vendor’s IP address |
| Signaling Port | SIP: 5060, H.323: 1720 | Default ports or custom ports if vendor requires |
| Gateway Prefix | Route matching prefix | Used for LCR routing; longest prefix match wins |
| Line Limit | Maximum concurrent calls | Set based on vendor capacity agreement |
| Priority | Routing priority (lower = higher) | 0-100, used when multiple gateways match |
VOS3000 supports three gateway types, each with specific use cases:
Configuration for Static Gateway: - IP Address: Required - Enter vendor's IP address - Port: SIP default 5060, H.323 default 1720 - Authentication: IP-based (no username/password needed) - Best for: Dedicated vendor connections, known IP addresses Steps to configure: 1. Navigation → Operation Management → Gateway Operation → Routing Gateway 2. Click "Add" to create new gateway 3. Select Gateway Type: Static 4. Enter Gateway Name (unique identifier) 5. Enter IP Address of vendor gateway 6. Set Protocol (SIP or H.323) 7. Set Signaling Port 8. Configure Line Limit 9. Click "Apply" to save
Configuration for Dynamic Gateway: - IP Address: Not required - discovered through registration - Registration: Vendor registers to VOS3000 - Authentication: Username/password required - Best for: Vendors with dynamic IPs, NAT traversal Steps to configure: 1. Create gateway with type "Dynamic" 2. Vendor must configure their end to register to VOS3000 3. VOS3000 learns IP from registration 4. Set registration expiry parameters 5. Monitor registration status in "Online Routing Gateway"
Configuration for Registration Gateway (Outbound Registration): - VOS3000 registers TO the vendor - Required when vendor requires authentication - Configuration via "Registration Management" Steps to configure: 1. Navigation → Operation Management → Registration Management 2. Add new registration entry: - Mark: Unique identifier - User Name: Vendor-provided username - Authentication Password: Vendor-provided password - Server IP: Vendor's registration server - Signaling Port: Typically 5060 - Register Period: Registration interval (default 3600s) 3. In Routing Gateway, select type "Registration" 4. Reference the Mark from Registration Management 5. Monitor registration in Registration Management view
Mapping gateways handle incoming calls from customers and are associated with customer accounts. Each mapping gateway configuration determines how VOS3000 identifies and bills the originating party.
| Parameter | Description | Configuration Notes |
|---|---|---|
| Gateway Name | Device ID for gateway | Matches IP or registration ID of customer device |
| Account | Associated customer account | Select from existing accounts; determines billing |
| Gateway Type | Static, Dynamic, or Phone | Phone type for individual SIP devices/softphones |
| Protocol | SIP or H.323 | Match customer device protocol |
| IP Address | Customer gateway IP | For static type; dynamic learns from registration |
| User Name | Authentication username | For SIP digest authentication |
| Password | Authentication password | Must match customer device configuration |
VOS3000 supports multiple authentication methods for gateways. Selecting the appropriate method depends on your security requirements and network topology.
| Method | Security Level | Use Case | Configuration |
|---|---|---|---|
| IP-Based | Medium | Fixed IP gateways, trusted networks | Gateway IP = Allowed IP |
| SIP Digest | High | Dynamic IPs, softphones, any network | Username + Password required |
| IP + Digest | Highest | High-security environments | Both IP and credentials validated |
Codec configuration determines voice quality and bandwidth usage for calls through each gateway. VOS3000 allows codec preferences to be set per gateway.
| Codec | Bitrate | Quality | Bandwidth (with overhead) |
|---|---|---|---|
| G.711 (alaw/ulaw) | 64 kbps | Excellent | ~87 kbps |
| G.729 | 8 kbps | Good | ~31 kbps |
| G.723.1 | 5.3/6.3 kbps | Fair | ~21 kbps |
| GSM | 13 kbps | Fair | ~36 kbps |
In Gateway Additional Settings → Codec: 1. Add supported codecs in priority order 2. Most preferred codec at top of list 3. System parameter default: SS_VALUE_ADDED_CODECS Example Configuration (Low Bandwidth Priority): ┌─────────────────────────────────────┐ │ Priority │ Codec │ Type │ ├─────────────────────────────────────┤ │ 1 │ G.729 │ Audio │ │ 2 │ G.723.1 │ Audio │ │ 3 │ G.711a │ Audio │ │ 4 │ G.711u │ Audio │ └─────────────────────────────────────┘ Example Configuration (Quality Priority): ┌─────────────────────────────────────┐ │ Priority │ Codec │ Type │ ├─────────────────────────────────────┤ │ 1 │ G.711u │ Audio │ │ 2 │ G.711a │ Audio │ │ 3 │ G.729 │ Audio │ └─────────────────────────────────────┘
DTMF (Dual-Tone Multi-Frequency) handling is critical for IVR systems and calling card platforms. VOS3000 supports multiple DTMF modes.
| DTMF Mode | Protocol | Reliability | Best For |
|---|---|---|---|
| RFC 2833 | SIP | High | Most SIP devices, recommended |
| Inband | SIP/H.323 | Low | Legacy devices only |
| SIP INFO | SIP | Medium | Specific vendor requirements |
| H.245 Alphanumeric | H.323 | High | H.323 gateways (default) |
Gateway groups allow you to organize multiple gateways for routing purposes. This is useful for load balancing, redundancy, and access control.
Location: Navigation → Operation Management → Gateway Operation → Gateway Group Parameters: - Gateway Group Name: Descriptive name for the group - Line Limit: Total capacity for the group • None: Use individual gateway limits • Set value: Override individual limits - Number of Routing Gateways: Count of routing GW in group - Number of Mapping Gateways: Count of mapping GW in group Use Cases: 1. Route balancing across multiple vendors 2. Restrict specific customers to specific vendors 3. Implement failover groups 4. Organize gateways by destination or quality tier
VOS3000 provides real-time monitoring of gateway status through the Online Gateway views.
| Field | Description |
|---|---|
| Gateway Name | Device ID of the gateway |
| Number of Calling | Current active calls / Total line limit |
| Routing ASR | Answer Seizure Ratio (if real-time ASR enabled) |
| Routing ACD | Average Call Duration (if real-time ACD enabled) |
| Call Per Second | Current call rate (if rate limiting enabled) |
| Registered IP | Current IP address of the gateway |
| Registration Time | When the gateway last registered |
| Encryption Type | TLS/SRTP status if configured |
| Problem | Possible Cause | Solution |
|---|---|---|
| Gateway not registering | Wrong credentials, firewall blocking | Verify username/password, check firewall rules |
| Calls failing with NoAvailableRouter | No matching prefix, gateway offline | Check gateway prefix, verify gateway status |
| One-way audio | NAT issues, media proxy setting | Enable media proxy, check NAT configuration |
| Call quality issues | Codec mismatch, bandwidth | Verify codec negotiation, check network |
| DTMF not working | DTMF mode mismatch | Set matching DTMF mode on both ends |
Static gateways use a fixed IP address that you configure manually – VOS3000 always sends calls to that IP. Dynamic gateways learn the IP address from SIP registration – the gateway device registers to VOS3000, and VOS3000 uses the registered IP for routing. Use Static when the vendor has a fixed IP, and Dynamic when the device may have a changing IP or is behind NAT.
First, create an entry in Registration Management with the vendor’s server IP, username, and password. Then create a Routing Gateway with type “Registration” and reference the Mark field from Registration Management. VOS3000 will register to the vendor and use that registration for routing calls.
Line Limit should match your agreement with the vendor or the actual capacity of the gateway. Setting it too high may result in call failures when the vendor cannot handle the load. Setting it too low wastes available capacity. Monitor ASR and ACD to determine optimal settings.
Configure multiple routing gateways with the same prefix but different priorities. Lower priority values are tried first. If a call fails, VOS3000 will try the next gateway in priority order. You can also use Gateway Groups to organize failover paths.
For dynamic gateways, check if registration is working properly by examining Registration Management. For static gateways, verify the IP is reachable (ping test), firewall rules allow the SIP port, and the gateway device is powered on and operational. Check system logs for registration or connection errors.
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