A Case Study of Installing 48 E1 with Elastix
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This document summarizes a case study of installing 48 E1 ports on a single Elastix system. It describes the challenges of supporting high concurrent call density on Asterisk/Elastix and how they were addressed. Hardware included 12 OpenVox D430 cards supporting 1488 channels total. Software configuration increased file limits and loaded the driver. Testing involved Winsip calls across the E1 spans with CPU loads up to 580%. The large installation demonstrated Elastix's ability to handle high density VoIP. The future may require more powerful E1 gateway and Asterisk products to meet growing market demands.
A Case Study of Installing 48 E1 with Elastix
- 1. A Case Study of Installing 48 E1 with Elastix Belief Mo www.openvox.cn
- 2. Agenda l The Background l The Past l The Present l A Successful Case Study l The Challenges l The Solutions l The Results l The Future
- 3. The Background l The Past l A brief history l Asterisk in 2002 l OpenVox in 2002 l trixbox CE in 2006 l FreeIris (Asterisk-based) in 2007 l AsterCC (Asterisk-based) in 2007 l FreeSWITCH in 2008 l Elastix (Chinese Version) in 2010
- 4. l The Present l Asterisk l Asterisk Community l Elastix Community (Largest) l trixbox Community l Other asterisk-based software communities l FreeSWITCH l FreeSWITCH-CN Google/QQ Group
- 5. l The Percentage of Users (by VoIP88.com)
- 6. l Elastix l From Zero to Hero l The Key to No.1 l Chinese GUI l Chinese Tech Docs l Local Manufacturer Support l Marketing Campaigns
- 7. Agenda l The Background l The Past l The Present l A Successful Case Study l The Challenges l The Solutions l The Results l The Future
- 8. A Successful Case Study l Implementing 32 E1 Ports in a Single System
- 9. A Bigger One
- 10. l Installing 48 E1 in a Single Elastix System
- 11. l The Challenges l High Density Concurrent Calls l Asterisk/Elastix is also a Limit
- 12. l The Solutions l OpenVox D430 (4 Port E1, Advanced Version) l Adjustable Interrupt Routing Design l Interrupts Frequency Adjustment l FPGA Design, Upgradeable Firmware Onsite
- 13. l V1.5 Latest Firmware l APU (embedded application specific processor unit) l IRQ Agent l Elastix
- 14. Step 1 l Hardware Configuration l D430E * 12pcs
- 15. l MB: Intel DBS2600CP2 ( 2 CPUs Supported)
- 16. l Ram: 8GB l CPU: Intel Xeon E5-2640 @2.5GHz
- 17. l OpenVox PCIe Slot Expansion Board(4 PCIe per board)
- 18. l The Connection
- 19. l Hardware Configuration l 6 D430 set as NET l 6 D430 set as CPE l Winsip calls NET->E1->CPE->answer and play audio.
- 21. Step 2 l Software Configuration l lspci (recognize D430, must be V1.5 to support 12 cards to work together.)
- 23. l ulimit -n (asterisk supports max 1024 files by default, 12 cards will need 12288 files.)
- 24. l load driver, 1488 channels (31*4*12=1488) l cat/proc/interrupts {only one(#26) IRQ # is registered by one wct4xxp; it’ll be 12 before IRQ agent}
- 26. l asterisk -r l pri show spans (48 spans are up)
- 28. The Elastix GUI l The System Info
- 32. l Winsip call test (about 3 hours)
- 34. l top (CPU load: 452.4%)
- 35. l The Results l 70%-580% CPU loads l The System is very stable. l Great Voice Quality l The Largest Density Installation that We’ve done with Elastix
- 36. Agenda l The Background l The Past l The Present l A Successful Case Study l The Challenges l The Solutions l The Results l The Future
- 37. The Future l The Challenge - Are we ready for this fast- growing market? l OpenVox l 8/16 port E1 products l Hot-plug VoIP gateway l Elastix
- 38. l Questions?
- 39. l Thank you!