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

[John Kelly]

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?