VOS3000 Geofencing : Full Easy Configure Geographic Call Restrictions

VOS3000 Geofencing: Configure Geographic Call Restrictions

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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Table of ContentsVOS3000 Geofencing: Configure Geographic Call Restrictions Understanding VOS3000 Geofencing Types of Geographic Restrictions in VOS3000 IP-Based Access Control Configuration IP Access Control Parameters (VOS3000 Geofencing) IP Restriction Configuration Steps Number Prefix Geographic Restrictions Caller Number Prefix Restrictions (VOS3000 Geofencing) Called Number Prefix Restrictions Country Code Blocking Reference High-Risk Destination Codes to Consider Blocking (VOS3000 Geofencing) Account-Level Geographic Restrictions Account Authorization Configuration (VOS3000 Geofencing) IP Address-Based Geographic Blocking IP Range to Country Mapping (VOS3000 Geofencing) Geofencing for Fraud Prevention Fraud Prevention Strategy Recommended Security Parameters (VOS3000 Geofencing) VOS3000 Installation and Security Services Related Resources (VOS3000 Geofencing) Frequently Asked QuestionsCan I block entire countries from calling my VOS3000?How do I know if an IP is attempting fraud?What destinations should I block by default?How do IP restrictions interact with NAT?Can I whitelist specific IPs while blocking all others? Get Expert VOS3000 Security Support Need Professional VOS3000 Setup Support?

Understanding VOS3000 Geofencing

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.

Types of Geographic Restrictions in VOS3000

Restriction Type Mechanism Use CaseIP-Based Access ControlAllow/deny by source IP addressRestrict access to known partnersCaller ID Prefix RestrictionBlock calls from specific area codesBlock high-fraud regionsCalled Number RestrictionBlock calls to specific destinationsPrevent calls to premium/satelliteGateway IP FilteringAccept signaling only from gateway IPPrevent unauthorized gateway useAccount IP BindingBind account to specific IPEnsure account used only from office

IP-Based Access Control Configuration

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.

IP Access Control Parameters (VOS3000 Geofencing)

Parameter Default Description RecommendationSS_ACCESS_IP_CHECK0 (disabled)Enable IP access validation for accountsSet to 1 for productionSS_REG_FAIL_BLACKLIST_COUNT5Failed registrations before blacklist3-5 recommendedSS_REG_FAIL_BLACKLIST_TIME3600 (1 hour)Duration of IP blacklist86400 (24 hours) recommendedSS_SIP_DYNAMIC_BLACKLIST_EXPIRE3600Dynamic blacklist expirationAdjust based on threat level

IP Restriction Configuration Steps

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 │
└────────────────────────────────────────────────────────────┘

Number Prefix Geographic Restrictions

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.

Caller Number Prefix Restrictions (VOS3000 Geofencing)

Configuration Location Description ExampleCaller Prefix AllowGateway → Additional settings → Caller prefixOnly accept calls with these caller prefixes1,44,81 (US, UK, Japan)Caller Prefix DenyGateway → Additional settings → Caller prefixReject calls with these caller prefixes234,91 (Known fraud sources)Caller Length RestrictionSystem parameter → SS_CALLERALLOWLENGTHMaximum caller ID length15 (typical international)

Called Number Prefix Restrictions

Configuration Location Description ExampleCalled Prefix AllowGateway → Additional settings → Called prefixOnly route calls to these destinations1,44,81,86Called Prefix DenyGateway → Additional settings → Called prefixBlock calls to these destinations881,882 (Satellite – high cost)Account AuthorizationAccount Management → Account authPer-account destination restrictionsBlock international, premium

Country Code Blocking Reference

High-Risk Destination Codes to Consider Blocking (VOS3000 Geofencing)

Code Region Risk Type Typical Rate881Satellite (Global)Premium rate, fraud$2-5/min882/883International NetworksPremium services$1-10/min900Premium Rate (Various)Adult services, contests$1-5/min242/246Caribbean (Selected)Wangiri fraud source$0.50-2/min809/829/849Dominican RepublicPremium fraud$0.50-1/min876JamaicaLottery scam source$0.50-1/min473GrenadaCallback fraud$0.40-1/min

Account-Level Geographic Restrictions

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.

Account Authorization Configuration (VOS3000 Geofencing)

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 │
└────────────────────────────────────────────────────────────┘

IP Address-Based Geographic Blocking

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.

IP Range to Country Mapping (VOS3000 Geofencing)

Region Example IP Ranges Block MethodChina1.0.1.0/24, 1.0.2.0/23, etc.Firewall or dynamic blacklistRussia5.1.0.0/16, 5.16.0.0/14, etc.Firewall or dynamic blacklistKnown Fraud IPsFrom threat intelligence feedsDynamic blacklist with expirationTor/VPN Exit NodesFrom public listsPermanent blacklist

Geofencing for Fraud Prevention

Fraud Prevention Strategy

Layer Method DescriptionLayer 1IP WhitelistOnly accept traffic from known partner IPsLayer 2Dynamic BlacklistAuto-block IPs after failed auth attemptsLayer 3Destination BlockingBlock calls to high-risk destinationsLayer 4Rate LimitingLimit concurrent calls and CPS per accountLayer 5Balance LimitsSet maximum daily spend per account

Recommended Security Parameters (VOS3000 Geofencing)

Parameter Recommended PurposeSS_ACCESS_IP_CHECK1Enable IP validationSS_REG_FAIL_BLACKLIST_COUNT3Block after 3 failed registrationsSS_REG_FAIL_BLACKLIST_TIME8640024-hour blacklist durationSS_CALLAUTH_INVALID_COUNT5Lock account after 5 invalid callsSS_MAXCONCURRENTCALLVaries by accountLimit concurrent calls

VOS3000 Installation and Security Services

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Service Description IncludesVOS3000 InstallationComplete server setupOS, VOS3000, Database, SecuritySecurity HardeningFraud prevention setupFirewall, IP restrictions, monitoringTechnical Support24/7 remote assistanceTroubleshooting, optimization

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Related Resources (VOS3000 Geofencing)

VOS3000 Security Configuration

VOS3000 Routing Configuration Guide

VOS3000 Account Management

VOS3000 SIP Trunk Configuration

VOS3000 Downloads – Manual and Software

Frequently Asked Questions

Can I block entire countries from calling my VOS3000?

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.

How do I know if an IP is attempting fraud?

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.

What destinations should I block by default?

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.

How do IP restrictions interact with NAT?

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.

Can I whitelist specific IPs while blocking all others?

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.

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