Stephen,

In my experience setting up an office PBX, I started with several SPA-3000's and eventually decided to go with an A200d.

There were two reasons for changing to the A200:
1. Hardware echo canceller. Despite all the configuration settings I tried, there was always a faint echo with the SPA-3000 that the users kept mentioning. The A200's echo canceller killed the echo in conversations - saving both the user's and my sanity. The only echo now is when people are using speakerphones with the speaker volume cranked up (SNOM 320's).

2. I had several instances with the SPA-3000s where they dropped calls or bridged two local people into the same PSTN line. This could have partially been the way I was trying to use it - relying on the 3000 to reject a request for an outgoing call before trying the next one. Any erratic behaviour seemed to coincide with it re-registering to the asterisk server. I was able to reproduce dropped calls on 4 different units with different FW versions by setting the register time to 1s, and hammering it with multiple outgoing calls. Since I went with the A200, I didn't follow this up or investigate further.

It seems that YMMV with the SPA-3000 - my opinion is that they work great for home use, but I wouldn't use them for a business application.

Most fax transmissions worked well for both of them when going directly from the FXO to the FXS ports, but not 100%. We eventually plugged the fax directly into it's own dedicated line - taking the fax line out of the phone system.

Configuration of the 3000's looks daunting at first, but isn't too bad after you've done it a couple times. I had some issues getting the echo canceller on the A200 working when it was first installed, but after I got it working (their tech support responded quickly) I re-installed the entire system twice from scratch and couldn't reproduce the issue.

I don't know the power consumption of the A200.

If you are sizing up equipment, I wouldn't rule out the digium cards. I did some limited testing with a Digium TDM 400P - I don't recall any issues. I think you need to go to a TDM2400P to get the HWEC.

Perhaps a SBC with a PCI Slot would suit your purpose if you decide to go with an internal card?


Regards,
Dana Harding

----- Original Message ----- From: "Stephen G" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Wednesday, August 09, 2006 7:20 AM
Subject: [asterisk-users] Sipura SPA-3000 vs Sangoma A200


Hi there,

I'm looking to set up a home-office PBX/Asterisk lab using a VIA EPIA motherboard as an always on, low powered solution.

I am trying to find out the differences between a solution using an external ATA (like the Sipura SPA-3000) or an internal PCI card (like the Sangoma A200 with 2 FXO 2 FXS ports).

Can someone tell me what the major functionality and limitations are when using the two devices with Asterisk? I am looking for things like configuration, power draw, sending faxes, etc.

So far I have these:

Sipura SPA-3000
-------------------------
External - can be located remotely from Asterisk server, can be used with an embedded solution (NSLU2) or a server with no PCI slot (smaller footprint and lower power draw). The problem with this is that there are more power blocks/adaptors needed. Draws about 5W (according to the statistics).
Ports - 1xFXO and 1xFXS
Cost - 80 UK pounds
Features not in Sangoma A200:

Sangoma A200 (A20101)
------------------------------------

Internal PCI - half or full hight.
Ports - 2xFXO and 2xFXO, power consumption ???
cost: 200 UK pounds
Features not in Sipura SPA-3000:

Thanks in advance!
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