RADVision VIU-323, User Manual

Page: 61 / 129

6-1
Setting up a Call
After the room system is connected to the VIU-323, the VIU-323 is connected to the LAN,
and both the room system and the VIU-323 are up and running. Use the room system dialer
to make your call.
Note: The VIU-323 does not support single-channel (1B) calls.
Bandwidth
In all cases, the bandwidth of the calling room system (via the VIU-323) must be the same
as the bandwidth of the receiving endpoint (gateway, VIU-323, H.323 terminal, or H.320
terminal). This means that before you call:
! You must know your VIU-323’s bandwidth and that of the unit you are calling.
! If you are calling through a gateway, you must know the gateway’s service number
and the type of connection (e.g., ISDN BRI) between the gateway and the unit you are
calling.
! If you are calling through an IMUX, you must know the IMUX profile.
In a basic call, the default bandwidths of both the calling and the receiving units are the
same. However, there are cases when you must change the default bandwidths of the calling
VIU-323 or the receiving VIU-323, or both. You can do this by adding a dialing prefix (to
change the outgoing bandwidth) or a dialing suffix (to change the receiving VIU-323’s
incoming bandwidth).
Note: We recommend that you define all VIU-323s on the same LAN segment with the same
bandwidth. For optimal quality, if all the participating terminals support it, use
768 Kbps.