> Combine that with dropping an FXO interface into a pstn environment > where the transmission levels to the CO are basically unknown, SOHO > impedence mismatches abound, bridged analog phone sets are commonplace, > and assumptions that plug-n-play applies across the board including the > x100p, its fairly obvious why so many people bad-mouth the "hardware".
I am badmouthing the hardware because I can drop an Adit600 FXO port on to the exact same line and have an order of magnitude better chance of getting adequate voice quality out of it. I am waiting for my FXO module to arrive so I can see if I have similar experiences with it. The X100P is a cheap hybrid interface. I am not arguing that point. I also believe, however, that using the X100P and reselling that particular brand of WinModem is giving a *lot* of asterisk newcomers a very bad taste in their mouths. It is my sincere hope that the TDM400P's FXO module is a significantly better hybrid and that the Dev Kit is simply a TDM400P with FXS and FXO modules. There's always a tradeoff between cost and performance. It is my opinion that the X100P was a bad choice. > Its also interesting that in about eight months on this list no one has > asked what the milliwatt generator is for, how to find the telephone > number of the pstn generator, how to measure the levels or what the > objectives should be, etc. I am pretty sure that most people wouldn't have the means to measure and apply that knowlege. I know what a milliwatt generator is used for and I have the means to measure and adjust the hybrid to get the desired result, but I didn't have the knowledge that yourself and Mr. Adamson have just brought to the list. In other words, I didn't know _where_ I needed to adjust the values to. It's especially interesting how the hybrid should NOT be adjusted to get 0dBm on the 4-wire side to eliminate echo. I would not have guessed that. I was also lucky enough not to need to live with the X100P for very long. > Maybe a couple of us should write a whitepaper for beginners on the topic. I think that would be an incredible nugget of knowledge for the Asterisk community. I know that I've got yours and Mr. Ferrell's messages stored away in my knowledgebase. :-) Regards, Andrew _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users