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User Guide V
2
IU 4300T Converged Network Appliance
3 - 20
Timing
Display and set the clock timing source for the T1/E1 interface. The timing can
be either derived from the network (External) or provided to the T1 interface
by the V
2
IU (Internal). With a carrier-provided T1, the timing is usually
derived from the network (External, the default setting).
Payload Loopback
Display and set the loopback setting. During T1 line testing the local interface
can be set to Loopback to allow the network provider to verify connectivity
and line quality. For normal operation the setting should always be No
Loopback (the default setting).
Configure the DHCP Server
The 4300T can act as a DHCP server granting IP addresses to PCs,
workstations, servers or voice devices (IP phones, IADs or softphones)
connected to its LAN interfaces. DHCP is a protocol that enables IP devices to
obtain temporary or permanent IP addresses (out of a pool) from centrally
administered servers.
The user can configure blocks of IP addresses, a default gateway, DNS servers,
NTP server address, Time offset from NTP value, WINS address and
TFTP/FTP server name that can be served to the requesting IP devices.
Warning
Mismatched timing modes can result in WAN connectivity but with intermittent data
loss.