1. Carrier-Class Infrastructure A Platform Provider’s Perspective Mike Twomey Excel Switching Corporation mtwomey@ExcelSwitching.com

2. Objectives To provide insight from the platform supplier perspective To share experiences we’ve seen and been a part of regarding this network scenario To help guide developers out of the field and into the lab…There will be no sales if there is no product

3. Excel AnyGen Platforms

4. Word of the Day Flexibility - Flex`i`bil´i`ty 1.the quality of being adaptable or variable; 2. the ability to change or be changed to fit changed circumstances 3.the ease with which a system or component can be modified for use in applications or environments other than those for which it was specifically designed

5. Flexibility…Let me count the ways Application(s) – Fixed & mobile, voice & signaling Size – <100 Channels to thousands Signaling - IP (SIP & H.323) & TDM (SS7/PRI/CAS) Architecture – IMS, SIP, Service Node Carrier-class and non-carrier-class – (I know this goes off topic, but as a developer you should be able to provide alternative architectures for an array of customers while minimizing your costs and their costs.)

6. App Developer Perspective +- SIP App Server  Low CapEx  “Industry Standard” – No media control – No TDM/H.323 Service Node  Flexibility - Multi- protocol  Low OpEx – Single API, single vendor mgmt  Dedicated media – Hardware $ – Hairpin increases OpEx Multi- function Platform  Low CapEx & OpEx + Flexibility  Fast to (new) market(s)  No Hairpin of traffic – Proprietary API

7. Deploying VoIP More services…Fewer boxes……Better solution T1 Tandem ACD PSTN Service Node T1 IP Network G’way Signaling G’way Softswitch SIP App Server SIP Registration Server Softphone Media Server PSTN Tandem SBC Excel T1 IP Network Softphone PSTN Tandem SBC

8. Deploying VoIP-based Prepaid 1.Multiple Vendor…Interoperability 2.Difficult to add new services 3.High CapEx and OpEx 4.Perceived QOS Application Server Media Server Gateway

9. Simplifying Your Network More than just a gateway… 1.Announcements 2.DTMF 3.Conferencing 4.Recording 5.TDM-TDM + IP-IP Speed time to market and reduce costs by leveraging flexible platform

10. Simplify…simplify…simplify Service Provider Benefits 1. Fewer Vendors…Eliminate Interoperability Issues 2. Pay as You Grow – Centralized/Distributed 3. Carrier Grade Reliability 4. Reduced Equipment, Spares & Training Costs Application Provider Benefits 1. Single API +SS7/PRI + SIP/H.323 Support… Easy/Low Cost to Add New Services 2. Reduced ongoing support costs T1 Egress Tandem Open Gateway + Application Soft Phone PSTN ATA + Phone IP Network SBC

11. Flexbility Within an Application 3G 2G Internet IP Network SCP/ AS SIP SMS-C Service Node IP Network VoiceXML MRF PSTN H.248 MGCF MG SGW IMG IP SS7 PM

12. Multi-application Flexibility IP T1/E1 Multi-service Platform SS7/C7 C7 Softswitch / SIP App Server Softswitch / SIP Networks Open new markets and reduce costs by leveraging a single flexible services platform BSC MSC 2G Mobility Networks WAG RNC MSC Server (Softswitch) SIP SIGTRAN 3G Networks RTP SIP Phone WLAN SIP Client Media Gateway VXML IMG 1010 PSTN

13. IP-enabling TDM-based Service Nodes…TDM-enabling IP-based Service Nodes It’s more than the technology…Own YOUR customer…Get footprint and relationship

14. Conclusion For developers, there is no uniform or ideal architecture being adopted across the board by service providers, which therefore requires insight and innovation on your part Multi-function platforms can offer substantial benefits to service providers but ONLY if they truly meet the needs of the carrier As an app developer, your primary concern should be defining and exceeding your customer(s) needs while differentiating yourself and minimizing YOUR costs