User's Manual

Components 761
Monitoring the
Phone Network
Monitoring the NBX Call Processor
The NBX Call Processor controls the incoming and outgoing phone calls
on your voice system. As a result, it is important that this device be
monitored.
3Com Network Director considers the NBX Call Processor to be a core
device, so it will be monitored by default.
3Com Network Director provides a number of monitors to check the
status of the NBX Call Processor:
■ IP Ping Service: 3Com Network Director checks the availability of the
NBX Call Processor using the ICMP Ping echo.
■ Other services: 3Com Network Director also checks the response time
for the services running on the NBX Call Processor, such as HTTP, FTP
and SMTP.
As the NBX call processor controls the incoming and outgoing phone calls
on your voice system, when the NBX Call Processor stops responding to
the IP Ping Service and its icon on the map turns red, 3Com Network
Director will also turn the icons for all monitored phones on the map
managed by this processor to red, to indicate that they cannot receive or
make calls.
When the NBX Call Processor becomes unavailable, no calls can be made
or received for the phones on the network managed by this NBX Call
Processor.
Monitoring a Phone
By default, phones will not be monitored on your network, because they
are not considered to be core devices.
To start monitoring a specific phone, select the icon for it on the map,
and use the Monitoring > Start Monitoring menu option.
3Com Network Director provides a number of monitors to check the
phone status:
■ Availability: 3Com Network Director polls the NBX Call Processor to
check that the phone is still online.