{"id":976,"date":"2026-04-07T13:27:16","date_gmt":"2026-04-07T13:27:16","guid":{"rendered":"https:\/\/www.vos3000.com\/blog\/?p=976"},"modified":"2026-04-07T13:27:24","modified_gmt":"2026-04-07T13:27:24","slug":"vos3000-geofencing-full","status":"publish","type":"post","link":"https:\/\/www.vos3000.com\/blog\/vos3000-geofencing-full\/","title":{"rendered":"VOS3000 Geofencing : Full Easy Configure Geographic Call Restrictions"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\" id=\"vos-3000-geofencing-configure-geographic-call-restrictions\">VOS3000 Geofencing : Configure Geographic Call Restrictions<\/h1>\n\n\n\n<p><strong>VOS3000 geofencing provides powerful geographic call restriction capabilities that allow operators to control call routing and access based on geographic location.<\/strong> 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.<\/p>\n\n\n\n<p>\ud83d\udcde <strong>Need help configuring VOS3000 geofencing?<\/strong> WhatsApp: <a href=\"https:\/\/wa.me\/8801911119966\" target=\"_blank\" rel=\"noreferrer noopener\">+8801911119966<\/a><\/p>\n\n\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Table of Contents<\/h2><nav><ul><li><a href=\"#vos-3000-geofencing-configure-geographic-call-restrictions\">VOS3000 Geofencing : Configure Geographic Call Restrictions<\/a><ul><li><a href=\"#\ud83d\udd0d-understanding-vos-3000-geofencing\">\ud83d\udd0d Understanding VOS3000 Geofencing<\/a><ul><li><a href=\"#\ud83d\udcca-types-of-geographic-restrictions-in-vos-3000\">\ud83d\udcca Types of Geographic Restrictions in VOS3000 <\/a><\/li><\/ul><\/li><li><a href=\"#\ud83d\udd12-ip-based-access-control-configuration\">\ud83d\udd12 IP-Based Access Control Configuration (VOS3000 Geofencing)<\/a><ul><li><a href=\"#\u2699\ufe0f-ip-access-control-parameters\">\u2699\ufe0f IP Access Control Parameters<\/a><\/li><li><a href=\"#\ud83d\udd27-ip-restriction-configuration-steps\">\ud83d\udd27 IP Restriction Configuration Steps (VOS3000 Geofencing)<\/a><\/li><\/ul><\/li><li><a href=\"#\ud83d\udcde-number-prefix-geographic-restrictions\">\ud83d\udcde Number Prefix Geographic Restrictions<\/a><ul><li><a href=\"#\ud83d\udcca-caller-number-prefix-restrictions\">\ud83d\udcca Caller Number Prefix Restrictions (VOS3000 Geofencing)<\/a><\/li><li><a href=\"#\ud83d\udcca-called-number-prefix-restrictions\">\ud83d\udcca Called Number Prefix Restrictions<\/a><\/li><\/ul><\/li><li><a href=\"#\ud83c\udf10-country-code-blocking-reference\">\ud83c\udf10 Country Code Blocking Reference<\/a><ul><li><a href=\"#\ud83d\udcca-high-risk-destination-codes-to-consider-blocking\">\ud83d\udcca High-Risk Destination Codes to Consider Blocking (VOS3000 Geofencing)<\/a><\/li><\/ul><\/li><li><a href=\"#\ud83d\udd27-account-level-geographic-restrictions\">\ud83d\udd27 Account-Level Geographic Restrictions<\/a><ul><li><a href=\"#\u2699\ufe0f-account-authorization-configuration\">\u2699\ufe0f Account Authorization Configuration (VOS3000 Geofencing)<\/a><\/li><\/ul><\/li><li><a href=\"#\ud83d\udcca-ip-address-based-geographic-blocking\">\ud83d\udcca IP Address-Based Geographic Blocking<\/a><ul><li><a href=\"#\ud83c\udf10-ip-range-to-country-mapping\">\ud83c\udf10 IP Range to Country Mapping (VOS3000 Geofencing)<\/a><\/li><\/ul><\/li><li><a href=\"#\ud83d\udea8-geofencing-for-fraud-prevention\">\ud83d\udea8 Geofencing for Fraud Prevention<\/a><ul><li><a href=\"#\ud83d\udcca-fraud-prevention-strategy\">\ud83d\udcca Fraud Prevention Strategy<\/a><\/li><li><a href=\"#\ud83d\udd27-recommended-security-parameters\">\ud83d\udd27 Recommended Security Parameters (VOS3000 Geofencing)<\/a><\/li><\/ul><\/li><li><a href=\"#\ud83d\udcb0-vos-3000-installation-and-security-services\">\ud83d\udcb0 VOS3000 Installation and Security Services<\/a><\/li><li><a href=\"#\ud83d\udd17-related-resources\">\ud83d\udd17 Related Resources (VOS3000 Geofencing)<\/a><\/li><li><a href=\"#\u2753-frequently-asked-questions\">\u2753 Frequently Asked Questions<\/a><ul><li><a href=\"#can-i-block-entire-countries-from-calling-my-vos-3000\">Can I block entire countries from calling my VOS3000?<\/a><\/li><li><a href=\"#how-do-i-know-if-an-ip-is-attempting-fraud\">How do I know if an IP is attempting fraud?<\/a><\/li><li><a href=\"#what-destinations-should-i-block-by-default\">What destinations should I block by default?<\/a><\/li><li><a href=\"#how-do-ip-restrictions-interact-with-nat\">How do IP restrictions interact with NAT?<\/a><\/li><li><a href=\"#can-i-whitelist-specific-i-ps-while-blocking-all-others\">Can I whitelist specific IPs while blocking all others?<\/a><\/li><\/ul><\/li><li><a href=\"#\ud83d\udcde-get-expert-vos-3000-security-support\">\ud83d\udcde Get Expert VOS3000 Security Support<\/a><\/li><li><a href=\"#\ud83d\udcde-need-call-center-setup-support\">\ud83d\udcde Need Professional VOS3000 Setup Support?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udd0d-understanding-vos-3000-geofencing\">\ud83d\udd0d Understanding VOS3000 Geofencing<\/h2>\n\n\n\n<p>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.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\ud83d\udcca-types-of-geographic-restrictions-in-vos-3000\">\ud83d\udcca Types of Geographic Restrictions in VOS3000 <\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udd12 Restriction Type<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udccb Mechanism<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udcbc Use Case<\/th><\/tr><\/thead><tbody><tr><td><strong>IP-Based Access Control<\/strong><\/td><td>Allow\/deny by source IP address<\/td><td>Restrict access to known partners<\/td><\/tr><tr><td><strong>Caller ID Prefix Restriction<\/strong><\/td><td>Block calls from specific area codes<\/td><td>Block high-fraud regions<\/td><\/tr><tr><td><strong>Called Number Restriction<\/strong><\/td><td>Block calls to specific destinations<\/td><td>Prevent calls to premium\/satellite<\/td><\/tr><tr><td><strong>Gateway IP Filtering<\/strong><\/td><td>Accept signaling only from gateway IP<\/td><td>Prevent unauthorized gateway use<\/td><\/tr><tr><td><strong>Account IP Binding<\/strong><\/td><td>Bind account to specific IP<\/td><td>Ensure account used only from office<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udd12-ip-based-access-control-configuration\">\ud83d\udd12 IP-Based Access Control Configuration (VOS3000 Geofencing)<\/h2>\n\n\n\n<p>Reference: VOS3000 2.1.9.07 Manual, Section 4.3.5 (System Parameters)<\/p>\n\n\n\n<p>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.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u2699\ufe0f-ip-access-control-parameters\">\u2699\ufe0f IP Access Control Parameters<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u2699\ufe0f Parameter<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udcca Default<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udcdd Description<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udca1 Recommendation<\/th><\/tr><\/thead><tbody><tr><td><strong>SS_ACCESS_IP_CHECK<\/strong><\/td><td>0 (disabled)<\/td><td>Enable IP access validation for accounts<\/td><td>Set to 1 for production<\/td><\/tr><tr><td><strong>SS_REG_FAIL_BLACKLIST_COUNT<\/strong><\/td><td>5<\/td><td>Failed registrations before blacklist<\/td><td>3-5 recommended<\/td><\/tr><tr><td><strong>SS_REG_FAIL_BLACKLIST_TIME<\/strong><\/td><td>3600 (1 hour)<\/td><td>Duration of IP blacklist<\/td><td>86400 (24 hours) recommended<\/td><\/tr><tr><td><strong>SS_SIP_DYNAMIC_BLACKLIST_EXPIRE<\/strong><\/td><td>3600<\/td><td>Dynamic blacklist expiration<\/td><td>Adjust based on threat level<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\ud83d\udd27-ip-restriction-configuration-steps\">\ud83d\udd27 IP Restriction Configuration Steps (VOS3000 Geofencing)<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\">VOS3000 IP Access Control Configuration:\n==========================================\n\nSTEP 1: Enable IP Access Check\n\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\nNavigation: Operation management \u2192 Softswitch management\n            \u2192 Additional settings \u2192 System parameter\n\nFind: SS_ACCESS_IP_CHECK\nSet Value: 1 (enabled)\nClick: Apply\n\nSTEP 2: Configure Account IP Binding\n\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\nNavigation: Account Management \u2192 Client Account (or Vendor\/Agent)\n\nFor each account:\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502 Field              \u2502 Value                                \u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502 Account ID         \u2502 1001                                 \u2502\n\u2502 Access IP          \u2502 192.168.1.100                        \u2502\n\u2502                    \u2502 (Only this IP can use the account)   \u2502\n\u2502 Access IP Mask     \u2502 255.255.255.255                      \u2502\n\u2502                    \u2502 (\/32 for single host)                \u2502\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\nFor subnet access:\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502 Access IP          \u2502 192.168.1.0                          \u2502\n\u2502 Access IP Mask     \u2502 255.255.255.0                        \u2502\n\u2502                    \u2502 (Allows entire 192.168.1.x subnet)   \u2502\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\nSTEP 3: Configure Gateway IP Restrictions\n\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\nNavigation: Operation management \u2192 Gateway operation\n            \u2192 Routing gateway \/ Mapping gateway\n\nGateway Configuration:\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502 Field              \u2502 Value                                \u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502 Gateway IP         \u2502 203.0.113.50                         \u2502\n\u2502 Signaling IP       \u2502 203.0.113.50 (must match gateway IP) \u2502\n\u2502 Accept Signal From \u2502 Gateway IP only                      \u2502\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udcde-number-prefix-geographic-restrictions\">\ud83d\udcde Number Prefix Geographic Restrictions<\/h2>\n\n\n\n<p>Reference: VOS3000 2.1.9.07 Manual, Section 4.3 (Gateway Configuration)<\/p>\n\n\n\n<p>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.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\ud83d\udcca-caller-number-prefix-restrictions\">\ud83d\udcca Caller Number Prefix Restrictions (VOS3000 Geofencing)<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u2699\ufe0f Configuration<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udccd Location<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udcdd Description<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udca1 Example<\/th><\/tr><\/thead><tbody><tr><td><strong>Caller Prefix Allow<\/strong><\/td><td>Gateway \u2192 Additional settings \u2192 Caller prefix<\/td><td>Only accept calls with these caller prefixes<\/td><td>1,44,81 (US, UK, Japan)<\/td><\/tr><tr><td><strong>Caller Prefix Deny<\/strong><\/td><td>Gateway \u2192 Additional settings \u2192 Caller prefix<\/td><td>Reject calls with these caller prefixes<\/td><td>234,91 (Known fraud sources)<\/td><\/tr><tr><td><strong>Caller Length Restriction<\/strong><\/td><td>System parameter \u2192 SS_CALLERALLOWLENGTH<\/td><td>Maximum caller ID length<\/td><td>15 (typical international)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\ud83d\udcca-called-number-prefix-restrictions\">\ud83d\udcca Called Number Prefix Restrictions<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u2699\ufe0f Configuration<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udccd Location<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udcdd Description<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udca1 Example<\/th><\/tr><\/thead><tbody><tr><td><strong>Called Prefix Allow<\/strong><\/td><td>Gateway \u2192 Additional settings \u2192 Called prefix<\/td><td>Only route calls to these destinations<\/td><td>1,44,81,86<\/td><\/tr><tr><td><strong>Called Prefix Deny<\/strong><\/td><td>Gateway \u2192 Additional settings \u2192 Called prefix<\/td><td>Block calls to these destinations<\/td><td>881,882 (Satellite &#8211; high cost)<\/td><\/tr><tr><td><strong>Account Authorization<\/strong><\/td><td>Account Management \u2192 Account auth<\/td><td>Per-account destination restrictions<\/td><td>Block international, premium<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83c\udf10-country-code-blocking-reference\">\ud83c\udf10 Country Code Blocking Reference<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\ud83d\udcca-high-risk-destination-codes-to-consider-blocking\">\ud83d\udcca High-Risk Destination Codes to Consider Blocking (VOS3000 Geofencing)<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udd22 Code<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83c\udf0d Region<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u26a0\ufe0f Risk Type<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udcb0 Typical Rate<\/th><\/tr><\/thead><tbody><tr><td><strong>881<\/strong><\/td><td>Satellite (Global)<\/td><td>Premium rate, fraud<\/td><td>$2-5\/min<\/td><\/tr><tr><td><strong>882\/883<\/strong><\/td><td>International Networks<\/td><td>Premium services<\/td><td>$1-10\/min<\/td><\/tr><tr><td><strong>900<\/strong><\/td><td>Premium Rate (Various)<\/td><td>Adult services, contests<\/td><td>$1-5\/min<\/td><\/tr><tr><td><strong>242\/246<\/strong><\/td><td>Caribbean (Selected)<\/td><td>Wangiri fraud source<\/td><td>$0.50-2\/min<\/td><\/tr><tr><td><strong>809\/829\/849<\/strong><\/td><td>Dominican Republic<\/td><td>Premium fraud<\/td><td>$0.50-1\/min<\/td><\/tr><tr><td><strong>876<\/strong><\/td><td>Jamaica<\/td><td>Lottery scam source<\/td><td>$0.50-1\/min<\/td><\/tr><tr><td><strong>473<\/strong><\/td><td>Grenada<\/td><td>Callback fraud<\/td><td>$0.40-1\/min<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udd27-account-level-geographic-restrictions\">\ud83d\udd27 Account-Level Geographic Restrictions<\/h2>\n\n\n\n<p>Reference: VOS3000 2.1.9.07 Manual, Account Management Section<\/p>\n\n\n\n<p>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.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u2699\ufe0f-account-authorization-configuration\">\u2699\ufe0f Account Authorization Configuration (VOS3000 Geofencing)<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\">VOS3000 Account Authorization Setup:\n=====================================\n\nNavigation: Account Management \u2192 Client Account \u2192 Account Auth\n\nAUTHORIZATION OPTIONS:\n\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\n\n1. ALLOW SPECIFIC DESTINATIONS:\n   \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n   \u2502 Auth Type    \u2502 Prefix Authorization                         \u2502\n   \u2502 Prefix List  \u2502 1,44,81,86,91 (US, UK, Japan, China, India) \u2502\n   \u2502 Mode         \u2502 Allow ONLY these prefixes                    \u2502\n   \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n   Result: Account can ONLY call destinations starting with these prefixes\n\n2. BLOCK SPECIFIC DESTINATIONS:\n   \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n   \u2502 Auth Type    \u2502 Prefix Block                                 \u2502\n   \u2502 Block List   \u2502 881,882,883,900 (Premium\/Satellite)         \u2502\n   \u2502 Mode         \u2502 Block these prefixes, allow all others       \u2502\n   \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n   Result: Account can call anywhere EXCEPT blocked prefixes\n\n3. INTERNATIONAL CALL CONTROL:\n   \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n   \u2502 Option       \u2502 Block International                          \u2502\n   \u2502 Setting      \u2502 Enable                                       \u2502\n   \u2502 Result       \u2502 Only domestic calls allowed                  \u2502\n   \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\n4. PREMIUM RATE BLOCKING:\n   \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n   \u2502 Option       \u2502 Block Premium Rate                           \u2502\n   \u2502 Setting      \u2502 Enable                                       \u2502\n   \u2502 Result       \u2502 Premium rate numbers blocked                 \u2502\n   \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udcca-ip-address-based-geographic-blocking\">\ud83d\udcca IP Address-Based Geographic Blocking<\/h2>\n\n\n\n<p>Using VOS3000&#8217;s extended firewall and IP blacklisting features, operators can implement geographic blocking based on IP address ranges assigned to specific countries or regions.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\ud83c\udf10-ip-range-to-country-mapping\">\ud83c\udf10 IP Range to Country Mapping (VOS3000 Geofencing)<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\ud83c\udf0d Region<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udd22 Example IP Ranges<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u2699\ufe0f Block Method<\/th><\/tr><\/thead><tbody><tr><td><strong>China<\/strong><\/td><td>1.0.1.0\/24, 1.0.2.0\/23, etc.<\/td><td>Firewall or dynamic blacklist<\/td><\/tr><tr><td><strong>Russia<\/strong><\/td><td>5.1.0.0\/16, 5.16.0.0\/14, etc.<\/td><td>Firewall or dynamic blacklist<\/td><\/tr><tr><td><strong>Known Fraud IPs<\/strong><\/td><td>From threat intelligence feeds<\/td><td>Dynamic blacklist with expiration<\/td><\/tr><tr><td><strong>Tor\/VPN Exit Nodes<\/strong><\/td><td>From public lists<\/td><td>Permanent blacklist<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udea8-geofencing-for-fraud-prevention\">\ud83d\udea8 Geofencing for Fraud Prevention<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\ud83d\udcca-fraud-prevention-strategy\">\ud83d\udcca Fraud Prevention Strategy<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udee1\ufe0f Layer<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u2699\ufe0f Method<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udccb Description<\/th><\/tr><\/thead><tbody><tr><td><strong>Layer 1<\/strong><\/td><td>IP Whitelist<\/td><td>Only accept traffic from known partner IPs<\/td><\/tr><tr><td><strong>Layer 2<\/strong><\/td><td>Dynamic Blacklist<\/td><td>Auto-block IPs after failed auth attempts<\/td><\/tr><tr><td><strong>Layer 3<\/strong><\/td><td>Destination Blocking<\/td><td>Block calls to high-risk destinations<\/td><\/tr><tr><td><strong>Layer 4<\/strong><\/td><td>Rate Limiting<\/td><td>Limit concurrent calls and CPS per account<\/td><\/tr><tr><td><strong>Layer 5<\/strong><\/td><td>Balance Limits<\/td><td>Set maximum daily spend per account<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\ud83d\udd27-recommended-security-parameters\">\ud83d\udd27 Recommended Security Parameters (VOS3000 Geofencing)<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u2699\ufe0f Parameter<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udcca Recommended<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udcdd Purpose<\/th><\/tr><\/thead><tbody><tr><td><strong>SS_ACCESS_IP_CHECK<\/strong><\/td><td>1<\/td><td>Enable IP validation<\/td><\/tr><tr><td><strong>SS_REG_FAIL_BLACKLIST_COUNT<\/strong><\/td><td>3<\/td><td>Block after 3 failed registrations<\/td><\/tr><tr><td><strong>SS_REG_FAIL_BLACKLIST_TIME<\/strong><\/td><td>86400<\/td><td>24-hour blacklist duration<\/td><\/tr><tr><td><strong>SS_CALLAUTH_INVALID_COUNT<\/strong><\/td><td>5<\/td><td>Lock account after 5 invalid calls<\/td><\/tr><tr><td><strong>SS_MAXCONCURRENTCALL<\/strong><\/td><td>Varies by account<\/td><td>Limit concurrent calls<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udcb0-vos-3000-installation-and-security-services\">\ud83d\udcb0 VOS3000 Installation and Security Services<\/h2>\n\n\n\n<p><strong>Need professional help with VOS3000 geofencing and security configuration?<\/strong> Our team provides comprehensive VOS3000 services including security hardening, fraud prevention setup, and ongoing technical support.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udce6 Service<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udcdd Description<\/th><th class=\"has-text-align-left\" data-align=\"left\">\ud83d\udcbc Includes<\/th><\/tr><\/thead><tbody><tr><td><strong>VOS3000 Installation<\/strong><\/td><td>Complete server setup<\/td><td>OS, VOS3000, Database, Security<\/td><\/tr><tr><td><strong>Security Hardening<\/strong><\/td><td>Fraud prevention setup<\/td><td>Firewall, IP restrictions, monitoring<\/td><\/tr><tr><td><strong>Technical Support<\/strong><\/td><td>24\/7 remote assistance<\/td><td>Troubleshooting, optimization<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\ud83d\udcde <strong>Contact us for VOS3000:<\/strong> WhatsApp: <a href=\"https:\/\/wa.me\/8801911119966\" target=\"_blank\" rel=\"noreferrer noopener\">+8801911119966<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udd17-related-resources\">\ud83d\udd17 Related Resources (VOS3000 Geofencing)<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\udcd6 <a href=\"https:\/\/www.vos3000.com\/blog\/vos3000-security\/\" target=\"_blank\" rel=\"noreferrer noopener\">VOS3000 Security Configuration<\/a><\/li>\n\n\n\n<li>\ud83d\udcd6 <a href=\"https:\/\/www.vos3000.com\/blog\/vos3000-routing-guide\/\" target=\"_blank\" rel=\"noreferrer noopener\">VOS3000 Routing Configuration Guide<\/a><\/li>\n\n\n\n<li>\ud83d\udcd6 <a href=\"https:\/\/www.vos3000.com\/blog\/vos3000-account-management\/\" target=\"_blank\" rel=\"noreferrer noopener\">VOS3000 Account Management<\/a><\/li>\n\n\n\n<li>\ud83d\udcd6 <a href=\"https:\/\/www.vos3000.com\/blog\/vos3000-sip-trunk\/\" target=\"_blank\" rel=\"noreferrer noopener\">VOS3000 SIP Trunk Configuration<\/a><\/li>\n\n\n\n<li>\ud83d\udce5 <a href=\"https:\/\/vos3000.com\/downloads.php\" target=\"_blank\" rel=\"noreferrer noopener\">VOS3000 Downloads &#8211; Manual and Software<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u2753-frequently-asked-questions\">\u2753 Frequently Asked Questions<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"can-i-block-entire-countries-from-calling-my-vos-3000\">Can I block entire countries from calling my VOS3000?<\/h3>\n\n\n\n<p>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.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"how-do-i-know-if-an-ip-is-attempting-fraud\">How do I know if an IP is attempting fraud?<\/h3>\n\n\n\n<p>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&#8217;s dynamic blacklist feature automatically blocks IPs with repeated failed authentication.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"what-destinations-should-i-block-by-default\">What destinations should I block by default?<\/h3>\n\n\n\n<p>Consider blocking: satellite codes (881, 882, 883), premium rate numbers (900 series), known high-fraud regions, and destinations you don&#8217;t do business with. Always balance security with business needs &#8211; over-blocking can reject legitimate calls.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"how-do-ip-restrictions-interact-with-nat\">How do IP restrictions interact with NAT?<\/h3>\n\n\n\n<p>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.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"can-i-whitelist-specific-i-ps-while-blocking-all-others\">Can I whitelist specific IPs while blocking all others?<\/h3>\n\n\n\n<p>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.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udcde-get-expert-vos-3000-security-support\">\ud83d\udcde Get Expert VOS3000 Security Support<\/h2>\n\n\n\n<p>Need assistance configuring VOS3000 geofencing or implementing fraud prevention? Our VOS3000 experts provide comprehensive support for security configuration, geographic restrictions, and fraud prevention strategies.<\/p>\n\n\n\n<p><strong>\ud83d\udcf1 WhatsApp: <a href=\"https:\/\/wa.me\/8801911119966\" target=\"_blank\" rel=\"noreferrer noopener\">+8801911119966<\/a><\/strong><\/p>\n\n\n\n<p>Contact us today for professional VOS3000 installation, security hardening, and technical support services!<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udcde-need-call-center-setup-support\">\ud83d\udcde Need Professional VOS3000 Setup Support?<\/h2>\n\n\n\n<p>For professional VOS3000 installations and deployment, VOS3000 Server Rental Solution:<\/p>\n\n\n\n<p>\ud83d\udcf1 <strong>WhatsApp:<\/strong> <a href=\"https:\/\/wa.me\/8801911119966\" target=\"_blank\" rel=\"noopener\">+8801911119966<\/a><br>\ud83c\udf10 <strong>Website:<\/strong> <a href=\"https:\/\/www.vos3000.com\">www.vos3000.com<\/a><br>\ud83c\udf10 <strong>Blog:<\/strong> <a href=\"https:\/\/multahost.com\/blog\" target=\"_blank\" rel=\"noopener\">multahost.com\/blog<\/a><br>\ud83d\udce5 <strong>Downloads:<\/strong> <a href=\"https:\/\/www.vos3000.com\/downloads.php\">VOS3000 Downloads<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><img decoding=\"async\" style=\"\" src=\"https:\/\/www.vos3000.com\/blog\/wp-content\/uploads\/2026\/04\/SIP-403-forbidden-VOS3000-QoS-configuration-VOS3000-debug-trace-VOS3000-SIP-session-timer-VOS3000-dial-plan-VOS3000-routing-optimization-5-1024x683.png\" alt=\"SIP 403 forbidden, VOS3000 QoS configuration, VOS3000 debug trace, VOS3000 SIP session timer, VOS3000 dial plan, VOS3000 routing optimization, Dial Plan Transformaci\u00f3n Conciliaci\u00f3n Bilateral Paquetes Tarifarios QoS Calidad Servicio Media Proxy - Control de RTP, NAT traversal, VOS3000 session timer, VOS3000 call end reasons, VOS3000 Work Calendar, VOS3000 geofencing, VOS3000\u8f6f\u4ea4\u6362\u53c2\u6570\u4f18\u5316, VOS3000\u9519\u8bef\u4ee3\u7801\u5927\u5168, VOS3000\u8d26\u6237\u6743\u9650\u7ba1\u7406\"><\/td><td><img decoding=\"async\" style=\"\" src=\"https:\/\/www.vos3000.com\/blog\/wp-content\/uploads\/2026\/04\/SIP-403-forbidden-VOS3000-QoS-configuration-VOS3000-debug-trace-VOS3000-SIP-session-timer-VOS3000-dial-plan-VOS3000-routing-optimization-5-1024x683.png\" alt=\"SIP 403 forbidden, VOS3000 QoS configuration, VOS3000 debug trace, VOS3000 SIP session timer, VOS3000 dial plan, VOS3000 routing optimization, Dial Plan Transformaci\u00f3n Conciliaci\u00f3n Bilateral Paquetes Tarifarios QoS Calidad Servicio Media Proxy - Control de RTP, NAT traversal, VOS3000 session timer, VOS3000 call end reasons, VOS3000 Work Calendar, VOS3000 geofencing, VOS3000\u8f6f\u4ea4\u6362\u53c2\u6570\u4f18\u5316, VOS3000\u9519\u8bef\u4ee3\u7801\u5927\u5168, VOS3000\u8d26\u6237\u6743\u9650\u7ba1\u7406\"><\/td><td><img decoding=\"async\" style=\"\" src=\"https:\/\/www.vos3000.com\/blog\/wp-content\/uploads\/2026\/04\/SIP-403-forbidden-VOS3000-QoS-configuration-VOS3000-debug-trace-VOS3000-SIP-session-timer-VOS3000-dial-plan-VOS3000-routing-optimization-5-1024x683.png\" alt=\"SIP 403 forbidden, VOS3000 QoS configuration, VOS3000 debug trace, VOS3000 SIP session timer, VOS3000 dial plan, VOS3000 routing optimization, Dial Plan Transformaci\u00f3n Conciliaci\u00f3n Bilateral Paquetes Tarifarios QoS Calidad Servicio Media Proxy - Control de RTP, NAT traversal, VOS3000 session timer, VOS3000 call end reasons, VOS3000 Work Calendar, VOS3000 geofencing, VOS3000\u8f6f\u4ea4\u6362\u53c2\u6570\u4f18\u5316, VOS3000\u9519\u8bef\u4ee3\u7801\u5927\u5168, VOS3000\u8d26\u6237\u6743\u9650\u7ba1\u7406\"><\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>VOS3000 geofencing, VOS3000 geographic restrictions, VOS3000 call restrictions, VOS3000 area code blocking, VOS3000 IP restrictions, geographic call routing, VOS3000 fraud prevention, VOS3000 location-based routing, VOS3000 manual, VOS3000 2.1.9.07, VOS3000 security, IP-based access control, area prefix restrictions, VOS3000 call blocking, geo-blocking VoIP, VOS3000 access control, VOS3000 gateway restrictions, number prefix filtering, VOS3000 routing rules, geographic filtering, VoIP security, VOS3000 configuration, call restriction rules, IP whitelist, IP blacklist, VOS3000 firewall, telecom security, VOS3000 expert, VoIP fraud prevention, location-based services, VOS3000 security 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