SDH Fundamentals L14.ppt

92 gscc support ne id setting by software supports 11

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92 GSCC Support NE ID setting by software Supports 1+1 hot backup Supports 40 DCC Processes Order-wire bytes Controls cabinet indicators and intelligent fans Collects and monitors alarms and performance events Monitors power supply Supports ASON intelligent function Inserted in slot 18 (Active) and/or Slot 17 (Standby
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93 SCC Unit Functions
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94 SCC Databases
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95 Summary
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96 Continue…
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97 Continue…
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98 Equipment and Network Protection
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99 TPS Protection
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100 Working Protection Relationship
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101 Ethernet Board Protection
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102 Equipment Protection Slots
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103 Equipment Protection Summary
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104 Thank You!
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105 PRC SEC 1 20 SSU 1 SSU 10 21 60 Cascading of timing references through a network should be minimized and governed by the ITU recommendation. Timing performance degrades as timing is passed from clock to clock. Synchronization chains should be kept short Synchronization Network Chain
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106 Normal Operating mode Holdover mode Free-run mode Normal a b b c d Holdover Free-run NE clock working mode NE clock working mode Synchronous Timing Unit
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  • Fall '19
  • Computer network, PRC, Clock distribution network, Network topology

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