[Asterisk-Users] Which Quad Port FXO is Best?

[Mike Clark]

John Kelly wrote:

> I'm looking to handle 3 PSTN lines with my Asterisk server.  I have a 
> Digium TDM22B and Sipura 3000.  The Sipura works great, but the TDM22B 
> seems to have terrible problems with my board---virtually all 
> peripherals need to be disabled in BIOS, and then there is terrible 
> noise, terrible silence and virtually no ability to use DTMF in IVRs.  
> I really wish the TDM22B worked, because I much prefer storing all my 
> configurations on one device, and not needing separate peer accounts 
> for each PSTN line.  However,  I don't have the skills or spare 
> hardware to debug this quickly, and I'm really wanting to get on with 
> the task of developing some AGI apps.
>
> I see several 4 port FXO Analog/SIP gateways on voipsupply.com:
>
> [$350] Clipcom 410:      
> http://www.voipsupply.com/product_info.php?products_id=240
> [$635] Mediatrix 1204:  
> http://www.voipsupply.com/product_info.php?products_id=171
> [$560] Patton 4114:       
> http://www.voipsupply.com/product_info.php?products_id=863
>
> I know it would be cheaper to buy two more Sipuras, but it might be 
> worth the extra $$ to cut down on the power adapters and have a 
> centralized point of administration, especially if it didn't involve 
> dozens of browser mouse clicks to 3 separate HTTP servers.  
> Reliability is the primary criterium, though.
>
> Can anybody give any recommendations?  And are these digium problems 
> unusual?
>
We now have three installs of the Sangoma A200 (with echo can) and love 
them. They sound quality is very good and, so far, they have totally 
eliminated echo.

Mike Clark