3com SuperStack 3 NBX Manual De Usuario

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Using a VTL Password
99
To place a hop-off call to 555-1212 in area code 903 through the Atlanta 
system, a user on a remote system would dial 72919035551212. The 72 
code sets up a VTL connection to Atlanta that incudes the Atlanta 
system’s VTL password, and the remaining digits are used to dial the 
number (9 accesses an outside line to obtain dial tone from the local 
carrier, 1 accesses the long-distance carrier, and the remaining digits 
specify the long-distance number).
If the same user used site code 62 to place a call to the Atlanta office, 
only toll-free, emergency, and internal call would be allowed.
Toll Calls Without a
VTL Password
If a local user has configured his telephone to forward calls to a 
long-distance number, then an incoming VTL call to that telephone does 
not need to supply the local system’s VTL password in order for the call to 
be forwarded.
Music On Hold
If two users are talking on a VTL connection, and the first user places the 
call on hold, the second user hears Music On Hold only if his local system 
is configured to play it.
Troubleshooting VTL
Calls
 contains a list of error situations, the possible causes and the 
action to take in each case.
Table 21   VTL Errors and Corrections
Error Condition
Possible Causes
Actions
Long pause after dialing. Telephone display contains 
“VTL” during the pause. Busy signal is then heard.
Remote server does not 
respond
Test the connection to the 
remote system using the 
Query Remote function.
After you finish dialing a VTL call, you get a busy 
signal and the message “All ports busy” appears in 
the telephone display panel.
1. No VTL license installed.
2. VTL device extensions not 
added to Extension List 
*0006.
3. All local VTL connections 
are currently in use.
4. All VTL connections at the 
remote site are currently in 
use.
1. Verify that the licenses 
appear when you access the 
tab.
2. Verify that the *0006 
extension contains the VTL 
device extensions.
3. On the Virtual Tie Line tab, 
verify that there is at least one 
idle VTL connection.
4. Use the Query Remote 
function to verify that there is 
at least one idle VTL 
connection.