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A-94 TimeVault™ User’s Manual 6000-100AppA.fm Rev. C

Appendix A: NTP Version 3, NTPQ, and NTPDC NTP V 3.0 Data Format per RFC-1305

Table A-2 Local Time Source Input

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.

Local Time Source Input

Reference Identifier String

GPS "GPS"

ACTS "ACTS"

NTP "NTP"

1 2 ... 103 104 105 106 107 108 109 110 111 112 113 ... 147 148

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Symmetricom Time Server Manuel d'utilisateur Page 108