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?



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