1. P909, T2-PIR24-TE-001.ppt, 5th April, 1999, V2.0 Enabling Technologies for IN Evolution and IN-Internet Integration Virtual Private Network Location B PBX Current Situation Location A PBX Location C PBX Direct link PSTN

2. P909, T2-PIR24-TE-001.ppt, 5th April, 1999, V2.0 Enabling Technologies for IN Evolution and IN-Internet Integration Virtual Private Network Location ALocation B Transient situation PSTN Location C PBX Direct link 111 112 113 211 212 213 311 312 313

3. P909, T2-PIR24-TE-001.ppt, 5th April, 1999, V2.0 Enabling Technologies for IN Evolution and IN-Internet Integration Virtual Private Network Location ALocation B Transient situation: Phone to phone PSTN Location C PBX Direct link 111 112 113 211 212 213 311 312 313 Call 213 Call 112

4. P909, T2-PIR24-TE-001.ppt, 5th April, 1999, V2.0 Enabling Technologies for IN Evolution and IN-Internet Integration Virtual Private Network Location ALocation B Transient situation: PC to phone PSTN Location C PBX Direct link 111 112 113 211 212 213 311 312 313 Call 213

5. P909, T2-PIR24-TE-001.ppt, 5th April, 1999, V2.0 Enabling Technologies for IN Evolution and IN-Internet Integration Virtual Private Network Location ALocation B Evolved situation PSTN Location C PBX Direct link

6. P909, T2-PIR24-TE-001.ppt, 5th April, 1999, V2.0 Enabling Technologies for IN Evolution and IN-Internet Integration Virtual Private Network VPN Features. Efficient call routing Virtual Private Network Network topology & status 1. Find origin 2. Find destination 3. Select best available route Call Setup call

7. P909, T2-PIR24-TE-001.ppt, 5th April, 1999, V2.0 Enabling Technologies for IN Evolution and IN-Internet Integration Virtual Private Network VPN Features. Abbreviated dialling Virtual Private Network Call 111 Setup call Orig. 3375111 Dialling rules Called #Translated # 11?337511? 22?336522? 23?425545?

8. P909, T2-PIR24-TE-001.ppt, 5th April, 1999, V2.0 Enabling Technologies for IN Evolution and IN-Internet Integration Virtual Private Network VPN Features. Call filtering (I) Virtual Private Network Call 4441524 Setup call Orig. 3375111 Filtering rules Called # 444???? 3224??? Rest Origin 11? ??? 1?? Allow?

9. P909, T2-PIR24-TE-001.ppt, 5th April, 1999, V2.0 Enabling Technologies for IN Evolution and IN-Internet Integration Virtual Private Network VPN Features. Call filtering (II) Virtual Private Network Call 3224524 Filtering rules Called # 444???? 3224??? Rest Origin 11? ??? 1?? Allow? Denied access to 3224524 Your telephone is not allowed to call that number

10. P909, T2-PIR24-TE-001.ppt, 5th April, 1999, V2.0 Enabling Technologies for IN Evolution and IN-Internet Integration Virtual Private Network VPN Features. Unified billing PSTN 111 - 113 - 07:20 111 - 214 - 02:20 314 - 214 - 10:20 314 - 113 - 15:19