We just replaced an aging Comdial DXP Plus PBX with an Elastix based solution. We're an outbound call center, and do about 300,000 - 500,000 minutes of outgoing long distance calls per month.

New Elastix based solution is composed of:

• Elastix 1.6 x64


• Links hidden for unregistered users. Login or register Here


• 2 Intel Xeon X5550 / 2.66 GHz quad core processors


• 4GB DDR3 ChipKill RAM


• 3 140GB 10k RPM SAS drives in a RAID 1 array with a hot spare


• Redundant hot-swappable power supplies


• Links hidden for unregistered users. Login or register Here Octal T1 card with hardware EC


• 8 Links hidden for unregistered users. Login or register Here FXS Media Gateways


• 35 Polycom SoundPoint IP 550 phones


• Links hidden for unregistered users. Login or register Here

The Sangoma card is connected to 3 PRI T1s, and 5 E&M Wink T1s. All of our DIDs are on 1 local T1, and the rest are dedicated to outbound long distance calls.

The system has been in production for about 6 weeks. So far we've peaked at about 90 simultaneous outbound calls, and the server hasn't even started to sweat. We've had to work through a few minor issues, and I've made some changes to try to improve performance under load.

On boot I modify the smp affinity for the IRQ for the Sangoma card to have it send kernel interrupts to CPU4 instead of CPU0.
Modified the asterisk init.d script to modify the smp affinity for the asterisk process and have it run on CPU3 instead of CPU0, and ulimit to increase the number of open files the asterisk process is allowed to have from the default of 1024 to 32768.

I wrote some crude php to provision the Polycom phones before they are connected to the network, and build directory files for them in the tftproot.

We're just starting to use much of the flexibility we have with the new solution.

Thanks for the great distribution! We evaluated PBX in a Flash, Trixbox CE, and Elastix. There were a lot of things that set Elastix apart from the rest.

Thanks for the great distribution!

.:diatonic:.

Congratulation for this setup. Seems that you've done a great job.

Are you using some additional softwares linked to elastix for dialing or doing your campaigns?

Also, what are the FXS gateway for? Are not all your phones IP?

How do you find the fax performance of the audiocodes device?

Thanks!

The FXS gateways are for connecting to analog phones. We already had 170 stations with analog phones and decided to use the FXS gateways, rather than putting IP phones at each of our stations. There are also a few other analog phones scattered around the company which connect to them.

The software which we use on our stations uses Microsoft TAPI for dialing. We're using Links hidden for unregistered users. Login or register Here for dialing at each station.

I've whipped up a quick application in C# .Net, using the Links hidden for unregistered users. Login or register Here library to connect to the manager interface and record some calls based on various criteria.

I haven't evaluated fax performance on the Audiocodes gateways. Right now our main incoming fax number comes in from a DID on our local E&M wink T1, and it is routed to a virtual fax using the Elastix iaxmodem/Hylafax tools. We have 2 fax machines we use for lightweight outbound faxing, which are currently connected to POTS lines. We have about 8 POTS lines that are not connected to the phone system. I do intend to test the Audiocodes gateways fax performance, they support T.38 and could then go out over a PRI.

.:diatonic:.

+ 1 karma to you for getting it!

Hi,
I need little help i testet Elastix with IBM 3550 M2 - raid 5014 - raid 1. When i unplug one of the hdd the server still work, but when i plug again the hdd don't start rebuild can you help me?

Congratulations, great work . Hope to see you around the forums given support

Regards,

Rafael

great news...working with sangoma folks also in large environments there is a trick to unload cpu in bus master tasks to and from the card in 4 and 8 or more digital lines (t1/e1)...after 240 simultaoens calls and above you can lower up to 70% cpu use tweaking dahdi frame chunk size...

see ya

Quote: "On boot I modify the smp affinity for the IRQ for the Sangoma card to have it send kernel interrupts to CPU4 instead of CPU0. Modified the asterisk init.d script to modify the smp affinity for the asterisk process and have it run on CPU3 instead of CPU0, and ulimit to increase the number of open files the asterisk process is allowed to have from the default of 1024 to 32768."

Can you tell me more exactly how you did it please?

Hi, can i ask your working "chan_dahdi.conf" config? i will try to compare to my new installed elastix... thanks in advance.