3Com 3C15500 - Network Director - PC, User Manual

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Key Considerations 775
The phone cannot be reached
If the phone should be on the network but is unconnected, this means
that none of the network nodes on the network (routers, switches, or
hubs) saw the physical address (the MAC address) of the phone. This in
turn means that the phone is unreachable, possibly due to being
disconnected, or having a broken link. To check this:
1 Make sure that the phones can be reached.
2 Check that the phones are correctly connected and the links are up.
3 Re-discover the network, using the Tool > Network Discovery menu
option.
The phones should now be connected on the 3Com Network Director
map.
The network device the phone is connected to has not been
discovered
If the network device that the phone is connected to has not been
discovered by 3Com Network Director then it will not be possible to
connect the phone to the rest of the topology. If this is the case then you
may resolve this by taking the following steps:
1 Determine the IP address of the network device that the phone is
connected to.
2 Launch the Network Discovery wizard using the Tools > Network
Discovery menu option.
3 In the Discovery Type stage, select Specify subnets and click Next.
4 In the Specify Subnets stage, add the subnets that contains the network
device that the phone is connected to, restricting the ranges to just the IP
address of the network device if desired.
5 Complete the network discovery.
After the network device has been discovered it should be added to the
map and the phone connected to it.
Why are some phones on the map showing the user name, while
others show the extension number?
By default, the label for a phone is the phone user name, in the format
first name and last name . However, in some cases the phone user name is
not set and shows the default values: New for the first name and User for
the last name.