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Huawei CR-A2HFF User manual

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Quidway® NetEngine 80 Core Router ATM Optical Interface Boards
Copyright ©2007 Huawei Technologies Co., Ltd. All Rights Reserved.
http://www.huawei.com/products/datacomm/ 1
Quidway® NetEngine 80 Core Router
ATM Optical Interface Boards
Overview
In addition to abundant IP network modules, the Quidway®NetEngine 80 core router (abbreviated
to NE80) provides ATM modules to be compatible with traditional ATM networks, satisfying users'
higher bandwidth and QoS requirements for networking. The NE80 supports the OC-3/STM-1 ATM
optical interface board and the OC-12/STM-4 ATM optical interface board.
CR-A8CFF
CR-A2HFF
The ATM interface board implements functions of the physical layer and the data link layer in
network connections. The sequence of bearing/encapsulation from bottom up is as follows: Optical
signals transmit SONET/SDH frames, SONET/SDH frame container bears the 53-byte ATM cells,
and ATM AAL5 encapsulates IP packets or data packets of other types. The interface line board
extracts data packets from this series of bearing and encapsulation and transmits them to the
network after encapsulation and translation processing.
Quidway® NetEngine 80 Core Router ATM Optical Interface Boards
Copyright ©2007 Huawei Technologies Co., Ltd. All Rights Reserved.
http://www.huawei.com/products/datacomm/ 2
The OC-3/STM-1 ATM optical interface board provides 155M transmission channels, and the
OC-12/STM-4 ATM optical interface board provides 622M transmission channels. Both boards use
hot-pluggable SFP optical modules. In actual networking, you must first choose the optical interface
board type based on ATM network rate, and then choose the proper SFP optical module based on
transmission distance.
Specifications
Currently, the NE80 supports two types of OC-3/STM-1 ATM optical interface boards (CR-A4CFF
and CR-A8CFF) and one type of OC-12/STM-4 ATM optical interface board (CR-A2HFF).
Module name Interface type Description
CR-A4CFF LC 4-port 155M ATM optical interface board: Different
SFP optical modules can be chosen for different
transmission distances.
CR-A8CFF LC
8-port 155M ATM optical interface board: Different
SFP optical modules can be chosen for different
transmission distances.
CR-A2HFF LC
2-port 622M ATM optical interface board: Different
SFP optical modules can be chosen for different
transmission distances.
The NE80 supports the following four types of 155MATM SFP optical modules:
Interface rate 155 Mbps
Maximum
transmission distance 2 km 15 km 40 km 80 km
Center wavelength 1310 nm 1310 nm 1310 nm 1550 nm
Min. -19 dBm -15 dBm -5 dBm -5 dBm
Transmitting
optical power Max. -14 dBm -8 dBm 0 dBm 0 dBm
Receiving sensibility -30 dBm -28 dBm -34 dBm -34 dBm
Overload optical
power -14 dBm -7 dBm -9 dBm -10 dBm
Quidway® NetEngine 80 Core Router ATM Optical Interface Boards
Copyright ©2007 Huawei Technologies Co., Ltd. All Rights Reserved.
http://www.huawei.com/products/datacomm/ 3
The NE80 supports the following three types of 622MATM SFP optical modules:
Interface rate 622 Mbps
Maximum transmission
distance 15 km 40 km 80 km
Center wavelength 1310 nm 1310 nm 1550 nm
Min. -15 dBm -3 dBm -3 dBm
Transmitting
optical power Max. -8 dBm 2 dBm 2 dBm
Receiving sensibility -28 dBm -28 dBm -28 dBm
Overload optical power -8 dBm -8 dBm -8 dBm