DO i need to connect these using a t1 or an fxs / fxo?
------------------------------------------------------------------------------------------------------
Not to step on Carl's toes, but there are several questions that your question raises. First what SX200 are you referring to. Analog, Digital, Light, ML/EL, ICP?
Why do you think inserting an Asterisk will help? (Voip provides CHEAP communications right now, but the GOVERNMENT WILL find a way to TAX it, eventually)
You will need a high level of QOS in order to have decent communications. And at some point, you will have to get back on the legacy phone network to communicate with the end point.
As Carl asked, 'is this a homework project?'. This is NOT a 'do it yourself' project. I've been involved in the turn-up of a company using Asterisk to extend the lifetime of older Mitel systems and provide some of the bells and whistles that weren't around when they were current supported systems, and I'm here to tell you, it hasn't been fun! I'm certified on a wide range of Mitel from SX10 through Lite19 and partners are Asterisk pros. The only reason I agreed to get involved is that I'm retired and needed a challenge. We are now in discussions with a 'COLO' regarding a merger that will greatly enhance our ability to do what we are doing.
To quote an assortment of TV shows, 'Don't try this at home!'.
And please, from now on, start a new topic unless you are adding to a topic on the same subject. No extra charge (still free
) and you'll get better results. By the same token, don't drag up an old topic that is on your subject. Rule of thumb, if no one has posted on a topic in 2 weeks, it's probably time to start a fresh one, if you can't find the answer doing a search of the subject here.