If Interface - Symmetricom TimeSource 3000 Manual

S S S S S S S
NTP TimeServer
1
Network Time Protocol Password Activation
BesTime Ensemble Timing Generator
18
S S S S S S S S S
The TimeServer is a Simple Network Time Protocol (SNTP) device. The SNTP TimeServer
function is provided via the TimeSource Ethernet interface and associated IP address. User
software requests UTC time of day via NTP protocol. The TimeSource SNTP server
responds with current UTC time. The TimeServer is compatible with the SNTP RFC-1769
format.
To enable the SNTP feature, a password must be entered using the ED-EQPT TL1
command. If a user makes a fourth attempt of an incorrect password entry, the TimeServer
will lock out the user for 1 hour.
Use of the Simple Network Time Protocol (SNTP) feature requires activation with a
password. Activation is accomplished through receipt of a Network Time Protocol
Activation Certificate from Symmetricom. This certificate contains the unit purchase order
number, unit model number, unit activation date, unit serial number, and unit activation key.
The unit activation key is the password that enables the SNTP feature. To activate the SNTP
feature, enter the TL l command printed on the activation certificate. Once activated, this
feature will be permanently enabled. To order the SNTP feature, contact the local
Symmetricom sales representative.
Clock signals from the IF Interface, the local oscillator, the two T1 span lines, and the two
remote oscillators are used as sources by the BesTime algorithms in the BesTime Ensemble
Timing Generator. The signals are analyzed for MTIE, TDEV, and other phase and
frequency characteristics.
The BesTime Ensemble Timing Generator uses mathematical models to analyze each clock.
The ensemble algorithms use the comparisons and analyses to generate a highly stable
timing signal, which uses the best qualities of all inputs.
T1 Outputs
The BesTime Ensemble Timing Generator provides the timing for the T1 timing signal
available at the T1 OUT A and B connectors in a framed, all-ones format, which can be set
to ESF or D4 framing.
Eight Additional T1 Outputs (990-72010-02 Systems Only)
This option provides eight additional T1 outputs at the OPTIONS I/O wire-wrap pins. These
outputs function the same as the standard T1 outputs.
S S S S S S S S S S S S S S S S S S
TimeSource 3000
097-72000-02 Issue 6: October 2003
S S S S S
Description