We have a Mitel 3300 PBX and we're looking to replace our PRI and BRI lines with SIP Trunking. I've seen that the 3300 supports SIP, but does it support direct SIP from a prospective ISP?
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http://www.mitel.com/resources/242_9113-Mitel3300ControllersDataSheet.pdf
Looks like it supports both SIP endpoints and SIP trunks. (which would be SIP from an ISP, yes)
Daniel Placek
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