Teleworker + Mitel 3300 (v8)

[nickcx]

Hi All,

Having a a bit of trouble getting our teleworked working properly. Getting one way audio despite allowing the correct ports/ips( even doing an allow any any on our Checkpoint firewall!).

It looks as though the 3300 is sending voice to the TW (in the DMZ) but then that doesn't seem to be getting out to the phone.

Have you got your TW working correctly? What ports, particular firewall settings did you use? We're running Version 8 on the 3300.

All and any hints, tips and pointers would be appreciated. Oh and if you need more info, just say (but just keeping it broad to start with)

Thanks!
Nick

 

[paterson]

From what I am understanding about your post, you are experiencing one way audio. If that is the case, then it is caused by an incorrect gateway entry somewhere. I would suspect in your IP phone settings, either static or DHCP.

If I understood wrong, then are your Teleworker IP sets registering to the 3300? What I mean by that, is the set fully up with a display that shows the system time and buttons that work?

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Insert Witty Signature Here.

 

[tilf]

Hi There,

I had the same issues using a watchguard firewall. It turned out to be NAT related. As well as adding a NAT for the external address to the DMZ address you also have to add the same NAT to the trusted network where your 3300 is.

Seems strange but its the only way ive got them to work fully.

 

[nickcx]

Hi Tilf,

Indeed that was exactly resolution we had to employ; move the TW to the DMZ, use normal external NAT for the TW phone, but set an internal NAT rule to send it back to the 3300 for any local.

As you say, it seems strange but that's how we got it to work in the end!

Regards,

Nick

 

[Mitelpassion]

had the same thing and the internal natting was my resolve too. my conclusion was that the voice packets are udp and these open random ports. you need the nat tables to keep track of these random ports to and from the sets.

 

[bearvalley]

Guys,

can you give me an example of the internal NAT setup.

ie: Nat the TW internal to ????


any advise welcome

Cheers