Zte ZXA10 S300, Техническое руководство

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Chapter 2 Technical Indexes
Confidential and Proprietary Information of ZTE CORPORATION 47
Output of Timing Reference
The system is equipped with two 2,048 kHz or 2,048 kbit/s clock
output interfaces. The 2,048kbit/s clock output interface is
preferred, and the 2,048kbit/s synchronization signal complies
with ITU-T Recommendation G.704.
Some Electrical and Physical
Features of Timing Interfaces
Some electrical and physical features of the timing interface
comply with ITU-T Recommendation G.703.
Wander and Jitter Indexes of Timing
Reference Interface
The wander and jitter performance indexes of the timing
reference interface comply with YD/T900-1997.
Timing Interface Extension Function
The ZXA10 S300 system provides the extended application of
the S1 byte to select the optimal clock path, that is, at the
highest stratum and with the smallest number of strata. When
configured with this function, it can seamlessly interconnect with
traditional equipment to implement the standard function clock
source selection.
Number of Clock Concatenations
As the embodiment of the jitter and drift functions of the SEC
clock and a reference for the capability of the phase-lock loop to
resist the input jitter, the system clock supports the cascading of
at least 20 NE strata without affecting the service.
Q Interface
Ethernet interface, the interface with the NMS.