Mitel Forums > Mitel MiVoice Business/MCD/3300

SIP to analogue converters

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bright:
We have a version 7 Mitel MXe and would like to get rid of the ASU which runs about 6 fax machines. Can anyone recommend a device which will work on the MXe using SIP trunk licenses which we have purchased.

Something similar to the Cisco ATA


Edited July-15-2012: See the store for more on GrandStream's analog adapter

ralph:
This was from another Mitel partner

bright:
Hi Ralph,

Thx, but do they handle fax machines ???

ralph:
I sent a pvt message also but thought I'd also post publicly.

I've actually never used them myself.   At one point I was investigating SIP to analog and the info I posted was sent to me by a Mitel Sales engineer that another dealer had passed to him.  But in general, Fax over IP doesn't work well unless going using T.38.    That's new on the Mitel 3300 and people have been having mixed results.   If the SIP to analog converter can be placed on the same data switch as the 3300, you would actually have a good chance of having it work ok.  G.711 only.  The problem comes in when there is any packet delay.   So if you're trying to use fax on a WAN it's not going to work for you at all. 

But for the cost, it may be worth a try.   Let me know what happens.
Ralph

chadmaynard:
Even with T38, faxing (even at low baud rates) does not work well (at all). We have a site that purchased mitel's T38 faxing upgrade and tried to implement it. Currently Mitel has 3 engineers dedicated to out customer trying to figure out how to make it actually work. If you want to fax through your 3300 you'll have to make sure you stay on the TDM side of your 3300. You can't reliably use SIP or MiNET in any way. We purchased some Vegastream Vega 50 Europa units. They are a few hundred bucks but they actually work (and deploying them was cheaper for our customer than deploying the Mitel T38 upgrade). We have a single controller with a few PRIs on it that terminates dial tone into the ASU for faxing. From their we configured the Vega units to do 1:1 to the remote IP sites. If you wanted to get your Fax dial tone from a SIP service provider that supports faxing, you could do that as well and not need the ASU, just a good internet connection. The Vegastream units aren't simple to configure, but if you have trouble just call and they will walk you through it. They even offered to set mine up for me using a remote desktop tool.

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