444
A
PPENDIX
A: C
ONNE
X
TIONS
H.323 G
ATEWAY
In addition to the NetMeeting software, participating computers need an
audio card with a headset (or speakers) and a microphone. The audio
card must support full-duplex 64 Kbps transfers.
Note that it is possible for a NetMeeting connection to be unsuccessful
and still have a successful ConneXtions installation. This can occur
because ConneXtions restricts the range of TCP and UDP ports used but
NetMeeting allocates its ports from a wider pool. For more information,
see “Firewall Security” earlier in this appendix. If ConneXtions is installed
with a limited range of allowable ports, and the firewall is configured to
pass only those ports, it is possible that NetMeeting cannot pass a call
through the firewall while the more restricted ConneXtions calls can pass
through.
The following procedure uses NetMeeting to test the connection
between the operating system that runs the NBX ConneXtions H.323
Gateway and a remote IP address. This end-to-end NetMeeting check can
help to recognize firewall problems without the complexity of the NBX
system and ConneXtions H.323 server.
To make a NetMeeting check:
1
From the
Start
menu, select
Settings
, and then
Control Panel
.
2
If you are using Windows NT, double-click
Services.
If you are using
Windows 2000, select
Applications,
and then
Services
.
3
Select
3ComConnextions
from the list, and click
Stop.
4
Access
www.microsoft.com
using a web browser.
a
Click
Downloads
in the navigation bar
.
b
In the
Product Name
field
,
select
NetMeeting.
c
In the
Operating System
field
,
select
Windows 95, Windows 98,
Windows 2000
or
Windows NT
.
d
Click
Find It!
The latest versions of NetMeeting are displayed. Click the
version you require.
5
Download NetMeeting files and respond to the prompts.
a
Click the program name (
NM30.exe
) next to
Download Now.
b
Click
OK
.
c
In the
Save As
dialog box, select a folder for the downloaded files.
d
Click
Save.
Summary of Contents for NBX 100
Page 14: ......
Page 18: ...18 ABOUT THIS GUIDE ...
Page 26: ...26 CHAPTER 1 INTRODUCTION ...
Page 138: ...138 CHAPTER 2 DIAL PLAN ...
Page 322: ...322 CHAPTER 3 DEVICE CONFIGURATION ...
Page 328: ...328 CHAPTER 4 USER CONFIGURATION ...
Page 412: ...412 CHAPTER 10 TROUBLESHOOTING ...
Page 458: ...458 APPENDIX B ISDN COMPLETION CAUSE CODES ...
Page 480: ...480 GLOSSARY ...
Page 492: ...492 INDEX ...