Mitel will gain a US customer base, get $200 million in cash, get the dealer network. It had been having losses so far and now with the merger it might have profit now.

What is Inter-tel getting from this deal? Their employees will be laid off, some of the products will be shelved (specially the new 7000 since MiTeL is already in large system even though they don't have pure SIP system), shareholders are given $25.60 per share whereas the stock could have gone up higher in time with some new products coming out and with the new 7000 becoming more accepted in the market.

So, isn't the real reason for this sale that Steve Mihaylo had proposed a seven point plan which would have axed some members of the board, made Inter-tel lose the cash reserve due to stock buy back. So, the board just rushed into this deal to cash out and get rid of Steve Mihaylo.

How come Mitel didn't even do the due diligence before the purchase by going through the products, meeting the technical team etc?

This whole deal looks very mysterious right now. It might be good for MiTeL but doesn't appear good for Inter-tel by any measures.