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1.29 Networking FeaturesFeature Guide 3091.29.3 Virtual Private Network (VPN)DescriptionVirtual Private Network (VPN) is a service provided by the telephone company. It uses an existing line as ifit were a private line. There is no need to set up a private line or to lease a line from the telephone company.Making and receiving both public and private calls is possible using the same line.Public/Private Discrimination:a) When making a call: The public/private discrimination number is required before sending thedialled number to the telephone company. The public/private discrimination number can be dialledmanually, or automatically by ARS programming (→ 1.9.1 Automatic Route Selection (ARS)) and/or TIE line service programming.b) When receiving a call: The telephone company distinguishes the call type. If it is a private call,the call is received by the TIE line service method. If it is a public call, the call is received by theIncoming Trunk Call Distribution method (DIL/DDI/MSN) which is assigned on the trunk.[Example]Conditions• Each BRI/PRI port can be set to public or VPN through system programming. To use this service, selectVPN.HeadOfficeExtn. 201 Extn. 202 Extn. 301 Extn. 302(DDI No.:01-45-6789)Extn. 401 Extn. 40201-23-4567VPNPublic ISDNDials "401".(TIE)Dials "9-01-23-4567".(ARS)Dials"01-45-6789".BranchOfficePublic CallNote:Private CallDiscrimination>9-0-01-23-4567Public No.Discrimination>113-401Private No.PBX-2BranchOfficePBX Code 111 PBX Code 112 PBX Code 113PBX-3PBX-1
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