Mitel 5760 VC User's Guide download pdf (Page 47)

Chapter 3 Videoconferencing Basics

Mitel Networks 5760 VC User’s Guide 3-13

Starting Videoconferences by Redialing

The 5760 VC provides shortcuts for redialing the last dialed number. Redial

shortcuts are available:

q From the Speed Dial screen, press <0> (zero) or #.

q From the Phone Book, press the yellow REDIAL SoftKey.

q From the Manual Dialer screen, press the red REDIAL SoftKey.

Calling Through Gateways

On certain occasions, you may need to videoconference with parties who are

connected to different networks or telephone exchanges. As noted earlier in this

User’s Guide, you can directly call any ISDN number, if you dial the correct

telephony prefixes (long distance code, country code, area code, etc.).

You can also call a system that is outside of your LAN. When you dial a remote IP

address, the router that you designate as your default gateway (see “LAN

Connection and Registration” on page 4-4) takes the call and routes it to the

destination.

However, at some point, you may be unable to take advantage of one of the

communication modes (IP or ISDN). If this happens, you can still meet with your

contacts by calling through an H.323/H.320 (IP/ISDN) Gateway.

q If your LAN connection is down, you can call the Gateway through your ISDN

lines and reach H.323 systems (IP addresses and other LAN-based addresses).

q If your ISDN lines are down, you can call the Gateway through your LAN

connection and reach H.320 systems (ISDN numbers).

5760 VC to Gateway to ISDN

5760 VC to Gateway to IP

H.320

Endpoint

Gateway

IP Network

H.323

Endpoint

Gateway

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Mitel 5760 VC User's Guide Page 47