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5.9
P8: NTS – network time-server (optional)
TCG 01 units fitted with the network time-server option
(NTS), feature an RJ45 connector supporting a 10Mbps
Ethernet port (10baseT). A standard (i.e. non-crossover)
drop lead should be used to connect the TCG 01 to a
convenient port on a local network hub or switch.
Protocols supported by the TCG 01 NTS option are: ARP, UDP, TCP, ICMP, Telnet, TFTP,
DHCP, SNMP and BOOTP. A TCG 01 unit equipped with the NTS option provides a
complete Stratum-1 time-server function while still retaining all other output services.
Specific time-sync client protocols supported are NTP and SNTP. SNMP trap support
allows for status monitoring and NTS alarm reporting to 3rd party network management
packages. Status reporting can be integrated with existing network management
software to provide a complete package.
Provision is made for up to 5 different IP addresses to be specified for SNMP trap
destinations, as well as two “Syslog” IP addresses. Accuracy of the NTS time stamps
produced is to within 1milliSec of UTC.
The RJ45 UTP port is
not
HV-isolated from the TCG 01 chassis, but complies with
the standard balanced nature of a UTP connection for an office network
Each TCG 01 unit equipped with the NTS option is supplied complete with a 2M UTP
cable. This cable is designed to connect directly between the TCG 01 unit and a network
hub/switch/router. The cable is not suitable for direct connection to the network port on
a PC. If such a connection is required, a cross-over cable must be obtained.
The NTS is configurable using the supplied configuration tool and a serial cable, or via a
password protected telnet connection.
Appendix D
on page 36 contains detail about
how to install and configure the network time server option.
