when the viewstation is powered on, the main calling screen is displayed. the main calling screen is essentially the same for each viewstation model with the exception of viewstation type which is displayed in the upper left corner of the main calling screen. the screen for the viewstation h.323 is shown in figure 3-1.

when the viewstation is initially set up or when the system has been manually reset, a series of setup screens appears to establish language, country, and system settings.
viewstation network line indicators
the viewstation checks the configuration of the network lines every time the viewstation is powered on or restarted. this process of checking the network lines normally takes less than one minute.

if the network line has failed or is not properly configured, a red down arrow status indicator displays on the main calling screen (shown in figure 3-2). when a network problem is noted, a red down arrow appears under the viewstation icon. check the network connection or contact the lan manager.
the viewstation with a quad bri or avaya dcp may have up to four bri or dcp lines. as the viewstation confirms each line, status indicators are displayed on the main calling screen. once the first isdn line (line 1) connects, you can make a call.
the viewstation h.323 with v.35 has two v.35 lines. as the viewstation confirms each line, status indicators are displayed on the main calling screen. when both the v.35 status indicators turn green, you can make a call.
the viewstation 512 mp main calling screen is shown in figure 3-3. the viewstation has checked and verified all four isdn lines as indicated by the four green up arrow icons on the screen.
1 a red down arrow icon indicates no network connectivity.
2 a yellow box icon indicates that the viewstation is checking the isdn line.
3 a green up arrow icon indicates network connection.
when the viewstation verifies each line connection, the yellow box icon turns to a green up arrow. after a few seconds, all four green up arrows disappear.

figure 3-3. viewstation main calling screen (512 mp shown)
if the viewstation is checking the status of the network lines and the cons do not disappear, check the connection of the viewstation and the configuration of your network lines.
1. early model viewstations contained hardware that was network specific. a replacement viewstation is required if a v.35 or dcp network interface module does not function correctly or the viewstation fails to detect the network interface module.
2. if the cable from the viewstation to the v.35 interface adapter exceeds 100 feet or 30 meters, the resistance in the cable is not sufficient to obtain a network connection.