l Table 5-12 describes the attributes of the BITS interfaces.
Table 5-12 Attributes of the BITS interfaces
Attribute Description
Connector type RJ45
Operation mode Clock synchronization mode: full duplex
Time synchronization mode: half duplex
Frame format
l 1 pps + Time of Day (TOD)
l DC Level Shifter (DCLS)
l 2 MHz
l 2 Mbit/s: HDB3 code
l 1.544 Mbit/s: B8ZS code
Compliance
standard
l 1 pps + TOD
– NMEA-0183
– TOD standard of China Mobile
l DCLS: standard of DCLS signals
l 2 MHz: G.703 standard
l 2 Mbit/s G.703 standard
l 1.544 Mbit/s G.703 standard
Cable
Time synchronization mode: time synchronization network cable,
which is a common straight-through network cable with the RS422
interface level
Clock synchronization mode: E1/T1 cable, which is a balanced cable
with an impedance of 120 ohms.
For details about cable, refer to 6.7 Clock Cable.
5.2.6 Technical Specifications
Table 5-13 describes the technical specifications of the SRU.
Table 5-13 Technical specifications of the SRU
Item
Specification
SRU dimensions
(depth x width x
height)
426.8 mm x 394.7 mm x 35.1 mm
Space for the FSU or VSU : 243.7 mm x 170.0 mm x 35.1 mm
5 Boards
Quidway S9300 Terabit Routing Switch
Hardware Description
5-18 Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 01 (2010-12-15)