「パケットネットワーク同期用クロック」公開。(657KB)

Technical Notes
TN151207TD
TDM
1須Synchronous Ethernet
Wander
MTIE,TDEV
2須IEEE1588
Holdover
PRC障Precision Reference Clock須
Macro晶cell Base Station A
B
Small晶cell Base Station A
PRC
SONET/SDH
B
Node
PRC
EEC: Ethernet Equipment Clock
ITU晶T
1須
2
1
Synchronous Ethernet 障SyncE須
2須
IEEE1588
Technical Notes
Ethernet SyncE IEEE1588
Ethernet
SyncE
PHY
IEEE1588
Ethernet SyncE IEEE1588
/
Node―
Ethernet
+/-100ppm
SyncE
EEC
IEEE1588
Stratm3,Stratm3E
MTIE
TDEV
Holdover
MTIE
TDEV
Holdover
PTP
Packet Data
Packet Data
Packet Data
Ethernet PHY
Ethernet PHY
Ethernet PHY
±100ppm clock
±100ppm clock
±100ppm clock
Packet Data
Ethernet
Ethernet
Packet Data + Physical Clock
Packet Data + Physical Clock
Packet Data
Ethernet PHY
Packet Data
Ethernet PHY
Ethernet PHY
Recovered Clock
PRC
Traceable Reference
EEC
EEC
EEC
Synchronous Ethernet 障SyncE須
SyncE
障Ethernet PHY須
EEC 障Ethernet Equipment Clock須
Node
Node
PRC
EEC ITU晶T
G冗8261 Option1,2
SyncE
2
Node
PRC
EEC
Technical Notes
Packet Data + Timing Packet
Ethernet PHY
Packet Data
PRC
Traceable Reference
Packet Data + Timing Packet
Ethernet PHY
Ethernet PHY
Packet Data
PTP IEEE1588
PTP IEEE1588
±100ppm
±100ppm
Recovered Clock
±100ppm
IEEE1588
TCXO/OCXO
IEEE1588
PTP
Precision Timing Protocol
PRC
Node
PRC
Node
Ethernet Clock
Node
障TCXO,OCXO須
ITU晶T
Layer
SONET/SDH
ITU晶T G冗825
L1
ITU晶T G冗813 Option 2
照2
SEC: SONET/SDH Equipment slave Clock
Telcordia GR晶1244CORE Stratum3
SyncE
ITU晶T G冗8261
L1
ITU晶T G冗8262 Option 1,2
照2
EEC: Ethernet Equipment Clock
Telcordia GR晶1244CORE
PEC 障Frequency須
ITU晶T G冗8261
障L2~3須
ITU晶T G冗8263
照3
Packet based Equipment Clock
Telcordia GR晶1244CORE
PEC
ITU晶T G冗8271
障Phase/Time須 照1
Note
照1
照2
照3
IEEE1588
ITU晶T
ITU晶T
障L2~3須
ITU晶T G冗8273
照3
Telecom Boundary Clock
PEC障Phase/Time須
Clock
Clock
Draft
3
Technical Notes
Clock
Telcordia Stratum
― ― ― <Telcordia GR-1244Core Stratum3 / G.812 Option 2 (SONET/SDH Equipment Clock) / G.8262 Option 2 >
-
Frequency Accuracy
+/-4.6ppm (20 years)
-
Frequency Stability
+/-300ppb (1day)
-
Frequency Drift
+/-40ppb (1day constant temp.)
-
MTIE, TDE
,Holdover
<Telcordia GR-1244Core Stratum3E / G.812 Typ3 >
-
Frequency Accuracy
+/-4.6ppm (20 years)
-
Frequency Stability
+/-10ppb (1day)
-
Frequency Drift
+/-1ppb (1day constant temp.)
-
MTIE, TDEV,Holdover
IC
Stratum3
TCXO
TG晶5500
TG5032
Stratum3E
OCXO
OG2525
OG2522
4
OG1409