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3 posts

Wannabe Geek

# 33068 29-Apr-2009 08:13
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Like this poster in February "I have just connected to Orcon using their Siemens SX763 "Home Hub" modem/router.
The only issue I have is that I cannot get Apple iChat to work, which I think is a function of port forwarding on the router.
Has anyone successfully set up iChat using this router?" (Darryn) 
I can iChat other users in New Zealand, except if they are also on Orcon. Anyone else with this problem? Anyone know how to fix it?

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I fix stuff!
1783 posts

Uber Geek


  # 216187 20-May-2009 09:40
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Sorry for the late reply.

Make sure UPnP is enabled on SX763. It should be by default.

This setting is under Advanced Settings -> Internet Connections.

If it is, and its still not working, then you will need to setup port forwarding.

iChat requires you to forward the 5060,5190,5220,5222,5297,5298,5353,5678,16384-16403 ports.

Hope that helps.

I fix stuff!
1783 posts

Uber Geek


  # 216189 20-May-2009 09:46
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I have a mac and a SX763 on my desk, happy to do some testing with you if required.


3 posts

Wannabe Geek

  # 216327 20-May-2009 14:07
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UPnP is under Basic Settings>Internet Connection on mine, but yes, it was on.
I already forwarded the ports, it did nothing, but I will try again. (So did the recipient I was trying to communicate with).

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Ultimate Geek

Lifetime subscriber

  # 217528 24-May-2009 21:20
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try turning firewall and other security features off on the modem.
iChat uses non-standard packets over SIP protocol. If the modem's firewall is enabled it will drop those packets, because they don't comply with SIP spec.
This may help:


3 posts

Wannabe Geek

  # 217582 25-May-2009 08:39
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Yes, there were already off, on the modem and on my Mac

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Master Geek

  # 218235 27-May-2009 09:43
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Hi Emweb!

Since my last post on this matter, I have had little success with the SX763 and iChat. Likewise, I was using "Back To My Mac" with my previous ISP quite happily using a Linksys router. Since moving and Orcon, I have not been able to get iChat or BTMM working. I have sought assistance from the Orcon help desk with no joy, apart from a link to a port forwarding website that offered some settings to try and get things going. One email from Orcon mentioned that uPNP was known to have issues and perhaps a future firmware update from Siemens may solve the problem.

In the meantime, I am going to try a different router (I gave my old Linksys away, silly me) and will see how that goes. Apart from the SX763 having a few question marks, I must say I am happy with Orcon - will just have to send them back the home hub.

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