Calling Through Gateways - Emblaze-VCON HD3000 User Manual

Chapter 4 Videoconferencing Basics

Calling Through Gateways

On certain occasions, you may need to call out from your local network (LAN call)
to parties who are connected to different networks, ISDN lines, or telephone
exchanges. In such situations, dialing through a gateway is required.
Before attempting a Gateway call, ask the system administrator to give you
the calling syntax. The syntax includes a service access number and, in some
cases, a variation of punctuation signs.
To call through a Gateway
1. Open the Manual Dial dialog (see
Manual Dialer" on page
number(s)] in accordance with the system administrator's instructions.
2. Set the required Bandwidth or use the default bandwidth.
3. Press <Dial>.
The gateway's gatekeeper receives the call. It recognizes the
syntax that the system administrator instructed you to enter, and it
passes the call onto the Gateway. You must be registered with a
Gatekeeper to reach a Gateway (see
and Properties" on page 66
The Gateway calls the destination, and when it receives an answer, it
begins the videoconference, continuously translating between H.320
(ISDN) and H.323 (IP).
58
HD3000
End point
IP Network
Gateway
HD3000 to Gateway to an ISDN Address
42) and dial [service access number][ISDN
for details).
H.320
End point
"Starting a Videoconference from the
"H.323 Network Registration
Emblaze VCON HD3000 User's Guide