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VOS3000 geofencing provides powerful geographic call restriction capabilities that allow operators to control call routing and access based on geographic location. By implementing IP-based access controls, area code filtering, and prefix restrictions, VOS3000 operators can prevent fraud, optimize routing, and comply with regulatory requirements. This comprehensive guide covers all geofencing and geographic restriction features based on the official VOS3000 2.1.9.07 manual.
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Geofencing in VOS3000 refers to the ability to restrict or allow calls based on geographic indicators such as IP address ranges, phone number prefixes (area codes), and regional identifiers. This functionality is essential for fraud prevention, regulatory compliance, and cost optimization.
| 🔒 Restriction Type | 📋 Mechanism | 💼 Use Case |
|---|---|---|
| IP-Based Access Control | Allow/deny by source IP address | Restrict access to known partners |
| Caller ID Prefix Restriction | Block calls from specific area codes | Block high-fraud regions |
| Called Number Restriction | Block calls to specific destinations | Prevent calls to premium/satellite |
| Gateway IP Filtering | Accept signaling only from gateway IP | Prevent unauthorized gateway use |
| Account IP Binding | Bind account to specific IP | Ensure account used only from office |
Reference: VOS3000 2.1.9.07 Manual, Section 4.3.5 (System Parameters)
IP-based access control is the foundation of VOS3000 geofencing. By restricting which IP addresses can register, make calls, or access the management interface, operators can significantly reduce fraud risk and unauthorized access.
| ⚙️ Parameter | 📊 Default | 📝 Description | 💡 Recommendation |
|---|---|---|---|
| SS_ACCESS_IP_CHECK | 0 (disabled) | Enable IP access validation for accounts | Set to 1 for production |
| SS_REG_FAIL_BLACKLIST_COUNT | 5 | Failed registrations before blacklist | 3-5 recommended |
| SS_REG_FAIL_BLACKLIST_TIME | 3600 (1 hour) | Duration of IP blacklist | 86400 (24 hours) recommended |
| SS_SIP_DYNAMIC_BLACKLIST_EXPIRE | 3600 | Dynamic blacklist expiration | Adjust based on threat level |
VOS3000 IP Access Control Configuration:
==========================================
STEP 1: Enable IP Access Check
───────────────────────────────
Navigation: Operation management → Softswitch management
→ Additional settings → System parameter
Find: SS_ACCESS_IP_CHECK
Set Value: 1 (enabled)
Click: Apply
STEP 2: Configure Account IP Binding
─────────────────────────────────────
Navigation: Account Management → Client Account (or Vendor/Agent)
For each account:
┌────────────────────────────────────────────────────────────┐
│ Field │ Value │
├────────────────────────────────────────────────────────────┤
│ Account ID │ 1001 │
│ Access IP │ 192.168.1.100 │
│ │ (Only this IP can use the account) │
│ Access IP Mask │ 255.255.255.255 │
│ │ (/32 for single host) │
└────────────────────────────────────────────────────────────┘
For subnet access:
┌────────────────────────────────────────────────────────────┐
│ Access IP │ 192.168.1.0 │
│ Access IP Mask │ 255.255.255.0 │
│ │ (Allows entire 192.168.1.x subnet) │
└────────────────────────────────────────────────────────────┘
STEP 3: Configure Gateway IP Restrictions
──────────────────────────────────────────
Navigation: Operation management → Gateway operation
→ Routing gateway / Mapping gateway
Gateway Configuration:
┌────────────────────────────────────────────────────────────┐
│ Field │ Value │
├────────────────────────────────────────────────────────────┤
│ Gateway IP │ 203.0.113.50 │
│ Signaling IP │ 203.0.113.50 (must match gateway IP) │
│ Accept Signal From │ Gateway IP only │
└────────────────────────────────────────────────────────────┘
Reference: VOS3000 2.1.9.07 Manual, Section 4.3 (Gateway Configuration)
Number prefix restrictions allow operators to block or allow calls based on the geographic region indicated by phone number prefixes. This is particularly useful for blocking calls to/from high-fraud regions or destinations with regulatory restrictions.
| ⚙️ Configuration | 📍 Location | 📝 Description | 💡 Example |
|---|---|---|---|
| Caller Prefix Allow | Gateway → Additional settings → Caller prefix | Only accept calls with these caller prefixes | 1,44,81 (US, UK, Japan) |
| Caller Prefix Deny | Gateway → Additional settings → Caller prefix | Reject calls with these caller prefixes | 234,91 (Known fraud sources) |
| Caller Length Restriction | System parameter → SS_CALLERALLOWLENGTH | Maximum caller ID length | 15 (typical international) |
| ⚙️ Configuration | 📍 Location | 📝 Description | 💡 Example |
|---|---|---|---|
| Called Prefix Allow | Gateway → Additional settings → Called prefix | Only route calls to these destinations | 1,44,81,86 |
| Called Prefix Deny | Gateway → Additional settings → Called prefix | Block calls to these destinations | 881,882 (Satellite – high cost) |
| Account Authorization | Account Management → Account auth | Per-account destination restrictions | Block international, premium |
| 🔢 Code | 🌍 Region | ⚠️ Risk Type | 💰 Typical Rate |
|---|---|---|---|
| 881 | Satellite (Global) | Premium rate, fraud | $2-5/min |
| 882/883 | International Networks | Premium services | $1-10/min |
| 900 | Premium Rate (Various) | Adult services, contests | $1-5/min |
| 242/246 | Caribbean (Selected) | Wangiri fraud source | $0.50-2/min |
| 809/829/849 | Dominican Republic | Premium fraud | $0.50-1/min |
| 876 | Jamaica | Lottery scam source | $0.50-1/min |
| 473 | Grenada | Callback fraud | $0.40-1/min |
Reference: VOS3000 2.1.9.07 Manual, Account Management Section
Account-level restrictions provide granular control over what destinations each account can call. This is essential for preventing unauthorized international calls, blocking premium destinations, and implementing business policy compliance.
VOS3000 Account Authorization Setup: ===================================== Navigation: Account Management → Client Account → Account Auth AUTHORIZATION OPTIONS: ───────────────────── 1. ALLOW SPECIFIC DESTINATIONS: ┌────────────────────────────────────────────────────────────┐ │ Auth Type │ Prefix Authorization │ │ Prefix List │ 1,44,81,86,91 (US, UK, Japan, China, India) │ │ Mode │ Allow ONLY these prefixes │ └────────────────────────────────────────────────────────────┘ Result: Account can ONLY call destinations starting with these prefixes 2. BLOCK SPECIFIC DESTINATIONS: ┌────────────────────────────────────────────────────────────┐ │ Auth Type │ Prefix Block │ │ Block List │ 881,882,883,900 (Premium/Satellite) │ │ Mode │ Block these prefixes, allow all others │ └────────────────────────────────────────────────────────────┘ Result: Account can call anywhere EXCEPT blocked prefixes 3. INTERNATIONAL CALL CONTROL: ┌────────────────────────────────────────────────────────────┐ │ Option │ Block International │ │ Setting │ Enable │ │ Result │ Only domestic calls allowed │ └────────────────────────────────────────────────────────────┘ 4. PREMIUM RATE BLOCKING: ┌────────────────────────────────────────────────────────────┐ │ Option │ Block Premium Rate │ │ Setting │ Enable │ │ Result │ Premium rate numbers blocked │ └────────────────────────────────────────────────────────────┘
Using VOS3000’s extended firewall and IP blacklisting features, operators can implement geographic blocking based on IP address ranges assigned to specific countries or regions.
| 🌍 Region | 🔢 Example IP Ranges | ⚙️ Block Method |
|---|---|---|
| China | 1.0.1.0/24, 1.0.2.0/23, etc. | Firewall or dynamic blacklist |
| Russia | 5.1.0.0/16, 5.16.0.0/14, etc. | Firewall or dynamic blacklist |
| Known Fraud IPs | From threat intelligence feeds | Dynamic blacklist with expiration |
| Tor/VPN Exit Nodes | From public lists | Permanent blacklist |
| 🛡️ Layer | ⚙️ Method | 📋 Description |
|---|---|---|
| Layer 1 | IP Whitelist | Only accept traffic from known partner IPs |
| Layer 2 | Dynamic Blacklist | Auto-block IPs after failed auth attempts |
| Layer 3 | Destination Blocking | Block calls to high-risk destinations |
| Layer 4 | Rate Limiting | Limit concurrent calls and CPS per account |
| Layer 5 | Balance Limits | Set maximum daily spend per account |
| ⚙️ Parameter | 📊 Recommended | 📝 Purpose |
|---|---|---|
| SS_ACCESS_IP_CHECK | 1 | Enable IP validation |
| SS_REG_FAIL_BLACKLIST_COUNT | 3 | Block after 3 failed registrations |
| SS_REG_FAIL_BLACKLIST_TIME | 86400 | 24-hour blacklist duration |
| SS_CALLAUTH_INVALID_COUNT | 5 | Lock account after 5 invalid calls |
| SS_MAXCONCURRENTCALL | Varies by account | Limit concurrent calls |
Need professional help with VOS3000 geofencing and security configuration? Our team provides comprehensive VOS3000 services including security hardening, fraud prevention setup, and ongoing technical support.
| 📦 Service | 📝 Description | 💼 Includes |
|---|---|---|
| VOS3000 Installation | Complete server setup | OS, VOS3000, Database, Security |
| Security Hardening | Fraud prevention setup | Firewall, IP restrictions, monitoring |
| Technical Support | 24/7 remote assistance | Troubleshooting, optimization |
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Yes, you can block entire countries by configuring IP-based restrictions for IP ranges assigned to specific countries, and/or by blocking calls with caller ID prefixes associated with those countries. This requires maintaining up-to-date IP geolocation data and prefix lists.
Monitor for patterns like: multiple failed registration attempts, calls to unusual destinations, sudden spike in call volume, calls at unusual hours, and calls to premium rate numbers. VOS3000’s dynamic blacklist feature automatically blocks IPs with repeated failed authentication.
Consider blocking: satellite codes (881, 882, 883), premium rate numbers (900 series), known high-fraud regions, and destinations you don’t do business with. Always balance security with business needs – over-blocking can reject legitimate calls.
IP restrictions work with the source IP seen by VOS3000. If clients are behind NAT, the restriction applies to the NAT public IP. For accounts behind the same NAT, use account-level credentials rather than IP restrictions alone.
Yes. Enable SS_ACCESS_IP_CHECK and configure Access IP fields for each account with only the allowed IP addresses. Calls from any other IP will be rejected even with correct credentials.
Need assistance configuring VOS3000 geofencing or implementing fraud prevention? Our VOS3000 experts provide comprehensive support for security configuration, geographic restrictions, and fraud prevention strategies.
📱 WhatsApp: +8801911119966
Contact us today for professional VOS3000 installation, security hardening, and technical support services!
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