VoIP Conversation Recording Methods and Applications

2. VoIP Conversation Recording Methods and Applications Andrew Blakely

3. About TelStrat TelStrat develops, manufactures and globally distributes high quality, innovative communication products that support telephony, data networking and video delivery solutions: • Global Solutions to Nortel Under OEM Agreement • CallParrot Conversation Recording • Access Network Equipment for xLECs

4. PSTN Trunk-SideRecording Voice Gateway Trunks Recorded Audio Voice Recording Server LAN/WAN/VPN VoIP Endpoints Voice Recording Search and Play, Admin. ACD, IVR, Other Applications VoIP Call Processing

5. Trunk-SideRecording • CONSIDERATIONS: • Records Calls Occurring Over Trunks Only • Limited Information for Search-N-Play • No DN/Extension, or ACD Agent ID Information • Records “On-Hold” Source • (e.g. Music, announcement) • No Station-to-Station/Peer-to-Peer Recording Trunk-Side Recording Records the “External” Perspective

6. PSTN VoIP Call Processing Trunk-SideRecording - CTI Voice Gateway Trunks Recorded Audio Voice Recording Server LAN/WAN/VPN VoIP Endpoints CTI/TAPI Comm. Voice Recording Search and Play, Admin. ACD, IVR, Other Applications

7. Trunk-SideRecording - CTI • CONSIDERATIONS: • Records Calls Occurring Over Trunks Only • Ability for Additional Information for Search-N-Play • DN/Extension, or ACD Agent ID Information • Records “On-Hold” Source • (e.g. Music, announcement) • No Station-to-Station/Peer-to-Peer Recording Trunk-Side Recording Records the “External” Perspective

8. Network ‘Sniffing’Port-Mirror/SPAN Port Mirror/SPAN: Connecting to one network connection (e.g. Ethernet) and receiving duplicate Inbound and/or Outbound data from another network connection(s).

9. PSTN Line-Side Port Mirror/SPAN Port Mirror/SPAN:Duplicate Data from Same Ethernet Switch Voice Gateway Trunks Source SPAN Ports VoIP Call Processing Destination SPAN Port Source SPAN Ports Voice Recording Server Port Mirror/SPAN - Dependant on Compatible Network Equipment Line-Side Port Mirror/SPAN Records the “Internal” Perspective

10. PSTN Line-SideRemote SPAN Remote SPAN:Duplicate Data from Downstream Ethernet Switch(s) Voice Gateway Trunks VoIP Call Processing Source SPAN Ports Source SPAN Ports Destination SPAN Port Voice Recording Server Remote SPAN - Dependant on Compatible Network Equipment Line-Side Remote SPAN Records the “Internal” Perspective

11. PSTN Line-Side VLAN SPAN VLAN SPAN:Duplicate Data from Voice (Recording) VLAN Recording VLAN Voice Gateway Trunks VoIP Call Processing Source SPAN Ports Destination SPAN Port Source SPAN Ports VLAN SPAN - Dependant on Compatible Network Equipment Voice Recording Server Line-Side VLAN SPAN Records the “Internal” Perspective

12. Port Mirror/SPANCore & Edge Core (Gateway): Receiving duplicate Inbound and/or Outbound data between Gatewayand First Network Connection. Edge (Endpoint): Receiving duplicate Inbound and/or Outbound data between Endpoint and First Network Connection.

13. PSTN Port Mirror/SPANCore (Gateway) Duplicate Data between Gateway and First Network Connection Voice Gateway Trunks VoIP Call Processing Core SPAN Link Destination SPAN Port Voice Recording Server

14. Port Mirror/SPANCore (Gateway) • CONSIDERATIONS: • Network Equipment MUST be Port Mirror/SPAN • Compatible • No Station-to-Station/Peer-to-Peer Recording of • calls between IP Phones Behind Same Gateway • when Using ‘Direct Media Path’ Direct Media Path (VoIP RTP) No VoIP RTP Received for Audio Recording Core SPAN Link Voice Recording Server Signaling (Call Setup)

15. Port Mirror/SPANCore (Gateway) • CONSIDERATIONS: • Remove Voice Recording Traffic IMMEDIATELY • (ASAP) from Data Network Core SPAN Link Voice VLAN Voice Recording Server Separate Physical/Virtual Network

16. PSTN Port Mirror/SPANEdge (Endpoint) Duplicate Data between Endpoint and First Network Connection Voice Gateway Trunks VoIP Call Processing Edge SPAN Link Voice Recording Server

17. Port Mirror/SPANEdge (Endpoint) • CONSIDERATIONS: • Network Equipment MUST be Port Mirror/SPAN • Compatible • May Need To Aggregate Mirror/SPAN Ports Voice Recording Server Edge SPAN Links Edge SPAN Link Edge SPAN Links

18. Port Mirror/SPANEdge (Endpoint) • CONSIDERATIONS: • Port Mirror/SPAN to PORT also duplicates other data devices connected to same PORT Voice (Phone) and Data (PC) Traffic Edge SPAN Link Voice Recording Server Separate Physical/Virtual Network

19. Port Mirror/SPANEdge (Endpoint) • CONSIDERATIONS: • Remove Voice Recording Traffic IMMEDIATELY • (ASAP) from Data Network Edge SPAN Link Voice Recording Server Voice VLAN Separate Physical/Virtual Network

20. PSTN Duplicate Media Stream Duplicate Voice Data (RTP) from Phone to Endpoint (Voice Recording Server) Voice Gateway Trunks VoIP Call Processing Duplicate VoIP Stream Voice Recording Server

21. Duplicate Media Stream • CONSIDERATIONS: • Patented by TelStrat • Requires Compatible Endpoints/Call Processing • Systems • Data Network Equipment does NOT need to be • Port Mirror/SPAN Compatible (e.g. Routers, • Ethernet Switches) • Records Peer-to-Peer VoIP Calls for Phones • behind same Gateway

22. Duplicate Media Stream • CONSIDERATIONS: • Efficient - Only Duplicates Voice Data (RTP) Duplicate VoIP Stream Voice Data (RTP) Only Voice Recording Server Separate Physical/Virtual Network

23. Duplicate Media Stream • CONSIDERATIONS: • Remove Voice Recording Traffic IMMEDIATELY • (ASAP) from Data Network Duplicate VoIP Stream Voice Recording Server Voice VLAN Separate Physical/Virtual Network

24. Thank You!Questions?