NEC UNIVERGE UM8000 User Manual page 322

Networking and Visual Messaging
The corrective actions described in this topic might require the network administrator's assistance.
Visual Messaging and Busy Ports
When Visual Messaging programs are installed, certain performance problems might occur, including message
notification delays and an increase in the percentage of busy signals.
Installing Visual Messaging programs, particularly ViewMail, means subscribers are using Visual Messaging to connect
to phone ports. ViewMail users without sound devices use messaging system ports to record and playback messages.
These users can increase the amount of traffic on messaging system ports. If the messaging system is operating at or
near port capacity, adding ViewMail can occasionally use up all of the ports. The number of subscribers who can
simultaneously use the messaging system is limited by the number of available ports.
Optimizing Performance on a Busy System
To ease performance problems on a busy system, try the following:
• Restrict some ports from using Visual Messaging.
The messaging system includes a special setting that limits the number of ports available for making phone
connections with network-based subscribers. To prevent a port from dialing out to a Visual Messaging workstation,
set the port Option to NL (No LAN connects). This keeps the port available for the system to use for processing
messaging system traffic. See
• Manually disconnect immediately.
Encourage subscribers to immediately disconnect after listening to or recording messages. ViewMail does not
immediately disconnect which enables subscribers to play or record a series of messages without breaking the
connection. If subscribers do not hang up, minimize the ViewMail window or select Disconnect when finished, the
connection remains open for three minutes and ties up a port.
Enabling Firewall Access
Visual Messaging is accessed through a firewall on TCP/UDP port 1024.
Using PC Sound Devices
If subscribers have Windows-compatible sound devices installed on their workstations, let them know they can listen to
and record messages using their workstations instead of the phone. This eliminates the need for a voice port
connection.
Act! 4.0 and 5.0 Field Mapping
When ACT! 4.0 and 5.0 is configured as the personal database in ViewCall Plus do not customize field mappings.
Subscriber is Unable to Change a Caller's Name
ViewMail users cannot replace "Unknown caller" with the caller's name. Changing the caller's name in the message
window is not supported.
Related Topics
Troubleshooting
Troubleshooting
"System > Switch > Switch Extensions."
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