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Is there a Free SIP Proxy for 3300

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sarond

Technical User
Mar 30, 2010
1,148
AU
I'll start by referring to an old post.

slapin mentions a SIP proxy that I believe he/she has written. The link has expired as it is so old.

My scenario is that we have a more and more customers now wanting to go down the SIP Trunk path but the 3300 doesn't play well with most small business SIP providers here in Australia without MBG. The 3300 is behind NAT. I can get a 5000 to work no worries but I believe this is because the 5000 will proxy for the IP Phones rather than using direct media. This goes against the design of the 3300 and is what MBG is used for.

Is there anything that works similar to MBG just for SIP Trunks, I don't need teleworking pr any apps.
 
what sip providers are you having trouble with?
we use internode with internode ADSL or SHDSL and we don't have any problems.

We have used Telstra with Telstra MAN device and its ok.
only ones that require proxy we have found are AMCOM and Optus as they only deliver to known IP and want all signalling and media to be streamed via that IP ( hence proxy required)

If I never did anything I'd never done before , I'd never do anything.....
 
Telstra with SIP Connect is fine.

It's more the budget providers like Engin, ISPhone, MyNetfone.

I believe it's the re-invites that the provider can't normally handle.
I still need to do more testing with these providers. The issue is that 3300's have been sold where a keysystem / small pabx would suffice.
 
We don't touch the low end sip , the hassle isn't worth our time , is it physical MCD ?
perhaps ata may be the answer to convert to TDM

If I never did anything I'd never done before , I'd never do anything.....
 
I hear you.

It is physical MCD normally a CX/i.

The problem is that the system was sold as small business bundle and now they want to take advantage of cheaper VoIP/SIP calls.
These customers are normally looking at the lower end SIP Providers. While it works ok for Samsung/Panasonic/M5000 etc... the 3300 was not designed this way and I accept that.

Just trying to keep costs low as these customers are normally tight asses.
 
The Mitel 5000 (now MiVoice office 250 I think) offers much better value for customers anyway and works as you want. Why offer the 3300 in the first place? :)

 
The 5000 has only been introduced in to Australia in the past 2yrs(since 5.1SP3). The 3300 has been here a lot longer.
We had issues on LS Trunks in Australia as soon as it was introduced which have only been fixed in release 6. We didn't even get caller id.
This had put our sales team off selling it. Mitel have marketed the 5000 not to compete with the 3300 here. We don't get DEI's so our configs will only ever be the main chassis. We don't have SX200's either.

Normally our small system is the Samsung OfficeServ but I'm trying to encourage the 5000 where I can. It can be difficult trying to change a customer from a key system to a PABX.
 
what about PRI loopback? That would force the media stream via the MCD. Might come into some caller ID issues but nothing that shouldn't be fixable.
 
The problem with PRI loopback would be cost.
An additional digital link license and a T1/E1 card would be too expensive.
The types of customers that I am referring probably shouldn't have gotten a 3300 in the first place.

I have heard of people using asterisk as a proxy, I just haven't had time to test and play around with it.
I'm hoping to try and get asterisk or another free SIP Server to sit between the 3300 and the ITSP.
I guess I'm looking for a B2BUA (Back to Back User Agent) so that the 3300 can register to the SIP Server and then the SIP Server can register to the ITSP.
Everything will sit behind a firewall/nat adsl router (cheap)
 
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