Emblaze-VCON HD3000 Betriebsanweisung PDF herunterladen (Seite 70)

Chapter 4 Videoconferencing Basics

58 Emblaze VCON HD3000 User’s Guide

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.

HD3000 to Gateway to an ISDN Address

³ To call through a Gateway

1. Open the Manual Dial dialog (see “Starting a Videoconference from the

Manual Dialer” on page 42) and dial [service access number][ISDN

number(s)] in accordance with the system administrator’s instructions.

2. Set the required Bandwidth or use the default bandwidth.

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).

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.

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 “H.323 Network Registration

and Properties” on page 66 for details).

H.320

End point

Gateway

IP Network

HD3000

End point

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Emblaze-VCON HD3000 Betriebsanweisung Seite 70