2. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California Billing Primer TMC IT Expo – Oct 2006 Bala Janakiraman Sonus Networks

3. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California What is the problem? How to fit next generation networking equipment into the existing OSS environment? How to bill for next generation services? How to run a profitable next generation network?

4. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California How to approach the problem Marketing Input –Target customers –Offer definitions –Charging structures Define usage data needs –Use cases –Call flows Specify requirements

5. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California Who is the customer? Target customers –Residential, Small Office Home Office (SOHO), Small and Medium Sized Business (SMB), Enterprise

6. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California What will you offer them? Offer definitions –Unlimited calling, bucket of minutes, long distance, international –Charge for enhanced services, such as voicemail, conferencing, voice portal –Converged services – e.g. Mobile calls through Wi-Fi Access point

7. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California How will you charge them? Charging structures –Subscription Dial-up/Broadband access –Time period Wi-fi access –Bucket of minutes Mobile phone service –Metered Traditional telco –Pre-paid Calling cards, content downloads from partners

8. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California How will customers use the service? Use Cases –Residential VoIP sub calls VoIP sub on the same VoIP network VoIP sub on other VoIP network Local TDM number Long distance TDM number International TDM number

9. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California How will customers use the service? More advanced use cases –Call forwarding –Call transfer –Conferencing –Voicemail –Find me / follow me –Presence server –Video conferencing –Mobile to Wi-Fi transfer

10. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California How will calls use the network? Call flow: ASX to ASX via SIP Endpoints Use case: VoIP sub calls on-net sub

11. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California How will calls use the network? Call flow: ASX to GSX to PSTN Use case: VoIP sub calls PSTN user

12. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California How will calls use the network? Use case: PSTN user calls VoIP sub Call flow: GSX to ASX to MGCP Endpoint

13. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California How will calls use the network? Use case: VoIP sub B forwards all calls to C Call flow: A calls B; B forwards to C A C

14. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California TA How will calls use the network? Sonus IMS Core PSTN IMX (CCCF/NeDS) HSX Mobile RAN Subsystem MSC/ VLR NBS, (P-CSCF, THIG) HLR Generic IP Network GSX (MGCF) GSX (BGCF) PSX (gsmSCF) SRX (S-CSCF) √ √ √ √ √ Use case: Mobile switches to Wi-Fi Call flow: Mobile -> TA -> NBS -> GSX (make before break)

15. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California Typical back office data needs Billing/Fraud –Calling/called numbers, ingress/egress trunk groups, call start/stop time, resources used (codec, app servers, media servers) Performance Management –Latency, packet loss, jitter Capacity Management –Minutes, average resource utilization, peak resource utilization Web Portal –Customer data, service/feature data, call history logs

16. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California The Role of Billing Mediation Collect Network Usage (NU) data from network elements Correlate and translate as required by OSS applications Distribute to back office applications To help carriers run profitable and efficient networks

17. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California Billing Mediation Architecture Example

18. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California Specify requirements Traffic level Latency Where to record usage data Filtering rules Data formats (AMA, IPDR, etc) Data interfaces (FTP, AMA DNS, Stream, etc) To correlate or not Storage/archive

19. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California Thank You Bala Janakiraman bjanakiraman@sonusnet.com