[OZAPRS] RE: Help practical advice wanted please

Phil Sampson psampson at bigpond.net.au
Tue Dec 28 14:37:48 EST 2004

Hi Brian,

Several siggestions:

MSN uses SIP protocol (session initiated protocol) also known as upnp in
microsoft world. If you and your firends have a NAT firewall router that
upnp capable you should turn it on. Similarly, if they are using windows
with SP2 firewall enabled they should make sure upnp is enabled.

This allows an MSN messenger session (instance of the program) to
communicate with teh firewall and open some UDP ports for that program
session only. (it could be different ports for different sessions). This
allows the Messenger to tell the firewall to temporarilly create a couple
open ports, more than that, the firewall then tells messenger what the
numbers are so it can be communicated via messenger protocol to the far
machine so it knows what port numbers to send on.

upnp has possible security flaws, but I have not had any probs for years.
allows you to have a firewall that does not have to set specific ports
permanently for MSN and allows many VOIP protocols to work in the same
not just MSN messenger.

BTW, I use MSN messenger 6.2 (downloadable from microsoft). 4.7 you may
is problematic. If moth ends have 6.2 I have no probs at all. It also has
more features. Also if you mix 4.7 and 6.2 they will not connect properly
and I believe this could be your issue. (ie one end 4.7 and other 6.2).

Could be many other things, but these are most common.



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Today's Topics:

   1. Help practical advice wanted please (Brian Beamish)


Message: 1
Date: Mon, 27 Dec 2004 17:55:15 +1000
From: "Brian Beamish" <bbeamish at bigpond.net.au>
Subject: [OZAPRS] Help practical advice wanted please
To: "OZAPRS" <ozaprs at marconi.ics.mq.edu.au>
Message-ID: <LIEKINBOEDBADNJIEKKECEJECIAA.bbeamish at bigpond.net.au>
Content-Type: text/plain; charset="iso-8859-1"

Hi Folks

After several days in vain trying to get MSN Messenger working with Audio
all in vain as I have come up with the following results.

I can get Video each way no problem and I can hear that other operator but
they cannot hear me.

Below is a typical message that I receive, whilst my system is telling me
that it is still trying to connect the other operators system is telling
them that I am connected, I emphasis that I am talking about a Audio
Connection as both keyboard and video connections are 100%

"The network or computer you are trying to reach is experiencing a
Please try again later".

We have been trying to talk to our grandchildren in ZL any tests have been
conducted with similar results separately with 3 different operators.

Some months ago PRIOR to installing my router I had if I recall no
at all I believe the problem lies within the router and that whilst I have
setup ports in it I obviously have the wrong ones setup.

If anyone can advise what the correct ports are to make a connection and
send Audio and also to make a connection and receive audio please do let
know so that I can try them and get this darn thing working.

Incidentally I have the correct ports for Echo Link setup in the router
it works well, without these in there it does not.

All operators are using Windows XP Home and all using MSN Messenger all
Broadband and three are on ADSL whilst I am on Cable myself.
I am using a Spirit SEP3040 Wireless Router with the computer that I am
trying to use using a cable not wireless connection.

Please no WINDOZ or similar messages but genuine help or advice would be
greatly appreciated

Thanks in advance

Brian VK4BBS
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