A Case Study of Installing 48 E1 with Elastix

Belief Mo www.openvox.cn

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

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

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 �

l  The Percentage of Users (by VoIP88.com)

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

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

A Successful Case Study�

l  Implementing 32 E1 Ports in a Single System �

A Bigger One

l  Installing 48 E1 in a Single Elastix System�

l  The Challenges l  High Density Concurrent Calls l  Asterisk/Elastix is also a Limit

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

l  V1.5 Latest Firmware l  APU (embedded application specific processor unit)�l  IRQ Agent

l  Elastix

Step 1

l  Hardware Configuration�l  D430E * 12pcs

l  MB: Intel DBS2600CP2 ( 2 CPUs Supported)

l  Ram: 8GB l  CPU: Intel Xeon E5-2640 @2.5GHz�

l  OpenVox PCIe Slot Expansion Board(4 PCIe per board)�

l  The Connection

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.�

Step 2 �

l  Software Configuration l  lspci (recognize D430, must be V1.5 to support 12

cards to work together.)

l  ulimit -n (asterisk supports max 1024 files by default, 12 cards will need 12288 files.)

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}

l  asterisk -r l  pri show spans (48 spans are up)

The Elastix GUI

l  The System Info

Hardware Detector

l  Winsip call test (about 3 hours)

l  top (CPU load: 452.4%)

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

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

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�

l  Questions?

l  Thank you!