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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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up vote 3 down vote accepted

Looks like it supports both SIP endpoints and SIP trunks. (which would be SIP from an ISP, yes)

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