Symmetricom Time Server User Manual page 108

Appendix A: NTP Version 3, NTPQ, and NTPDC
Reference Timestamp
The reference timestamp is a 64 bit timestamp format representing the local time at the
last update. TimeVault's reference timestamp is the last time that a valid synchronization
source signal was present.
Originate Timestamp
The originate timestamp is a 64 bit timestamp format representing the time that the request
left the client host.
Receive Timestamp
The receive timestamp is a 64 bit timestamp format representing the time that the request
arrived at the service host.
Transmit Timestamp
The transmit timestamp is a 64 bit timestamp format representing the time that the reply
left the service host.
Authenticator
This is a 96-bit field containing the authenticator information as described in Appendix C
of RFC-1305. This field is not implemented by TimeVault.
A-94
Table A-2 Local Time Source Input
Local Time Source Input
GPS
ACTS
NTP
TimeVault™ User's Manual
NTP V 3.0 Data Format per RFC-1305
Reference Identifier String
"GPS"
"ACTS"
"NTP"
6000-100AppA.fm Rev. C