1. Voice and Data FOSTEL 2007 Extending Open Source PBX Architecture for Scalable Enterprise Media Gateways FOSTEL 2007

2. Voice and Data FOSTEL 2007 Current Open Source PBX Model ZAPTEL TDM Drivers/Hardware (Sangoma/Digium) Kernel Space Asterisk Open Source PBX chan_zap.sochan_sip.so T1/E1 IP

3. Voice and Data FOSTEL 2007 Asterisk – Zaptel Architecture ZAPTEL Hardware Echo Cancellation & DTMF & DCHAN HDLC TDM Drivers/Hardware (Sangoma/Digium) Kernel Space Asterisk Open Source PBX chan_zap.so sip T1/E1 IP /dev/zap/ 0 1 2 3 4 5 6 7 8 9 10 … 245 246… 500... 600 iax Global hw_isr() 1000 isr / sec for all spans 1ms 8byt

4. Voice and Data FOSTEL 2007 Asterisk/FreeSwitch – Woomera Architecture TDM API Hardware Echo Cancellation & DTMF & DCHAN HDLC TDM Drivers/Hardware (Sangoma/Digium) Kernel Space Asterisk/FreeSwitch chan_woomera.so sip T1/E1 /dev/wptdm/ 0 1 2 3 4 5 6 7 8 9 10 … 245 246…500.. 600 Global hw_isr() 100 isr / sec for all spans 10ms 80byt Woomera Server Sangoma Media Gateway SS7 ISDN RBS SMG TCP UDP (media)

5. Voice and Data FOSTEL 2007 The Distributed TDM Architecture Started as a response to a business need: Providing a carrier-grade SS7 interface to Asterisk and others. A need to support 10+ E1 lines. Woomera Protocol: TCP Control Socket + UDP Media Socket (Woomera offers leverage) Design a Generic Channel Driver using Woomera for Asterisk.

6. Voice and Data FOSTEL 2007 Woomera Control Protocol TEXT based Call Control Messages (carried over TCP) HELLO, CALL, HANGUP, LISTEN, ACCEPT, ANSWER, DTMF, BYE/QUIT Each command is transmitted in ASCII text format EVENT HELLO CALL Version: 0.3 h323:h323.voxgratia.org Supported-Protocols: Raw-Audio: 192.168.1.1:9000 h323,sip,iax Request-Audio: raw ACCEPT EVENT MEDIA Unique-Call-Id: id1 Unique-Call-Id: id1 Raw-Audio: 192.168.1.1:9000 UDP based: Media (ulaw,alaw,PMC-16…)

7. Voice and Data FOSTEL 2007 Distributed Clustering Woomera TDM Architecture T1/E1 SIP/IAX/IP Woomera Server --------------- SMG TDM. Gateway TDM API / ZAPTEL Hardware Woomera Server --------------- SMG TDM Gateway TDM API / ZAPTEL Hardware SS7 TDM API Hardware ISUP/IP Woomera control over TCP Media UDP Woomera Client Asterisk SIP/IAX

8. Voice and Data FOSTEL 2007 Distributed Woomera TDM Architecture Woomera Client Woomera Server --------------- SMG TDM Gateway Woomera over TCP T1/E1 SS7 ISDN RBS TDM API / ZAPTEL Hardware Woomera over TCP Media over UDP Woomera Server OPAL SiP Protocol Woomera Server OPAL H323 Protocol ASTERISK

9. Voice and Data FOSTEL 2007 Fax T38 Solution for Asterisk Woomera Server --------------- SMG TDM Gateway Woomera over TCP T1/E1 SS7 ISDN RBS SIP/H323 over IP TDM API / ZAPTEL Hardware Woomera over TCP Media over UDP Woomera Server SIP/H323/T38 Woomera Client Asterisk

10. Voice and Data FOSTEL 2007 A108 Octal Eight (8) port E1/T1/PRI Eight (8) port E1/T1/PRI 2U Form factor: 120mm x 55 mm for use in restricted chassis 2U Form factor: 120mm x 55 mm for use in restricted chassis Support for the Asterisk™, OPAL™ Yate, FreeSwitch™ PBX/IVR projects, as well as other Open Source and proprietary Support for the Asterisk™, OPAL™ Yate, FreeSwitch™ PBX/IVR projects, as well as other Open Source and proprietary DSP Echo Canceller (A108D) DSP Echo Canceller (A108D) Comes in PCI and PCI Express versions Comes in PCI and PCI Express versions A108X PCI Express A108 PCI

11. Voice and Data FOSTEL 2007 A400 Enhanced 2 – 48 analog FXO/FXS ports 2 – 48 analog FXO/FXS ports Requires only 1 PCI slot to handle 48 ports Requires only 1 PCI slot to handle 48 ports 100% compatible with Asterisk and runs 100% compatible with Asterisk and runs in both Linux and Windows in both Linux and Windows Optional DSP Echo Canceller Optional DSP Echo Canceller Comes in PCI and PCI Express versionsComes in PCI and PCI Express versions

12. Voice and Data FOSTEL 2007 Thank you for coming and contributing to this conference Questions?