My association is most likely going to move from DC to Virginia. My Mitel rep suggested converting to SIP if we wish to keep our phone numbers as is - which would be very cool. We have a staff of about 65 employees. He said this is much less expensive than setting up any kind of forwarding plan. Otherwise, he said, we'd probably need to get all new phone numbers.
We have a 5000 and it's not too far out of date. It's due for some upgrades which are free under our maintenance plan direct with Mitel.
I'm vaguely aware of SIP Trunking, but not an expert in it. My feeling is that you can degrade the quality of your voice unless you design and install it correctly - and provide enough bandwidth to it. However, keeping our numbers would be nice.
I know that the nice thing about the 5000 is that it supports this technology.
Does anyone have any experience with this kind of installation? Cautionary tales? Go for it?
Thanks.
Adam in DC