Huawei RRU3808, RRU3808 AWS Users Guide

RRU3808 V200

Installation Guide

Issue: 04
Date:2010-03-05

HUAWEI TECHNOLOGIES Co., Ltd.

Contents

Safety Information …………………………………………….….……
Installation Tools ………………………………………….…………..
Space Requirements …………………………………….……..…….
Installation Modes …………………………………………………….
Installation Procedure …………………………………….………….
Components Delivered with the RRU ……………………………..
Installing the RRU on a Metal Pole ………………..……………….
Installing the RRU on a U-Steel ……………….……….…………..
Installing the RRU on an Angle Steel ……………………………..
Installing the RRU on a Wall ………………………………………..
Installing the RRU Cables …………………………………………..

2
3
4
5
7
7

8
12
12
13
15

RRU Hardware Installation Checklist ……………………………..
Powering On the RRU …………………………………...…………..
Appendix ………………………………………………………..……..
Change History …………………………………...…………………..

24
24
25
30

Copyright © Huawei Technologies Co., Ltd. 2010. All rights reserved.

1

Safety Information

Following All Safety Precautions

Before any operation, read the instructions and precautions in this document carefully to minimize the possibility
of accidents.
The Danger, Caution, and Note items in the documents do not cover all the safety precautions that must be
followed. They only provide the generic safety precautions for operations.
When operating Huawei products and equipment, you must comply with safety precautions and special safety
instructions related to corresponding equipment provided by Huawei. The safety precautions in the document
are related to only Huawei products. Huawei is not liable for any consequence that results from the violation of
universal regulations for safety operations and safety codes on design, production, and equipment use.

Complying with the Local Safety Regulations

When operating the device, comply with the local safety regulations. The safety precautions provided in the
documents are supplementary.

Qualified Personnel Only

The personnel in charge of installation and maintenance must be trained and master the correct operating
methods and safety precautions before beginning work.

Symbols

DANGER

WARNING

CAUTION

TIP

NOTE

Indicates a hazard with a high level of risk, which if not avoided, will result in death or
serious injury.

Indicates a hazard with a medium or low level of risk, which if not avoide d, co ul d result
in minor or moderate injury.

Indicates a potentially hazardous situation, which if not avoided, could result in
equipment damage, data loss, performance degradation, or unexpected results.

Indicates a tip that may help you solve a problem or save time.
Provides additional information to emphasize or supplement important points of the

main text.

Safety of Personnel

• The high voltage power supply provides power for running the system. Direct contact with the high voltage
power supply or contact through damp objects may result in fatal danger.

• Non-standard and improper high voltage operations may result in fire and electric shock.

• In a thunderstorm, do not perform operations on high voltage and AC power supply facilities or on a steel
tower and mast.

• Ground the device before powering on the device. Otherwise, the personnel and device are in danger.

• Power off the device before performing operations on the power supply equipment.

• High power radio-frequency signals are harmful to human body. Before installing or maintaining an antenna
on a steel tower or mast with a large number of transmitter antennas, the operator should coordinate with all
parties to ensure that the transmitter antennas are shut down.

• When handling optical fibers, do not stand close to, or look into the optical fiber outlet with unaided eyes.

• Protect yourself when drilling holes. Flying dust may hurt your eyes or you may inhale the dust.

• Power off the batteries before connecting the cables to the batteries. Otherwise, casualties may occur.

• When working at a height, be cautious about falling objects.

Device Safety

• Check the electrical connection of the device before operation and ensure that the device is reliably grounded.

• The static electricity generated by the human body may damage the electrostatic sensitive components on
the circuit board, such as the large-scale integrated circuit (LIC). Wear an electrostatic discharge (ESD) wrist
strap or ESD gloves when performing the operation.

• When working on batteries, take measures to prevent short circuits in the batteries and electrolyte spill/loss.
The electrolyte may erode metal and boards, or even cause rust of the equipment or short circuits in the boards.

• When the equipment is unpacked, it must be powered on in 24 hours. The maximum duration of the power­off state of the equipment is 24 hours during maintenance.

2

Installation Tools

Hammer drill (with bit 14)

Heat gun

Claw hammer

ESD gloves

Phillips screwdriver

(M3~M6)

Knife

Torque socket

Vacuum cleaner

Flat-head screwdriver

(M3~M6)

Wire stripper

Power cable crimping pliers

Torque wrench

Level

Multimeter

Wire cutter

Torque screwdriver

Marking pen

(with the diameter of no more

than 10 mm)

3

Adjustable wrench

(with the diameter of at laest 32 mm)

Combination wrench

(21mm~21mm) for pole installation
(17mm~17mm) for wall installation

Measuring tape

Installation Options

On a metal pole

On a U-steel

On an angle steel

On a wall

The following figure describes the specificati ons for the metal pole, angle steel, a nd U-steel where the RRU is
installed.

60 mm to 114 mm

80mm

～

63mm

Metal pole

63 mm to 75 mm

63 mm to 75 mm

50 mm to 100 mm

Angle steel U-steel

RRU

30 mm to 50 mm

The angle between
the vertical and the

Angle steel
or U-steel

≤10°

angle steel or U­steel or angle steel
where the RRU is
installed must be
less than or equal to
10 degree.

The brackets cannot be
combined when the RRUs
are installed on the wall.

z A maximum of two RRUs can be installed on a metal pole with a diameter of 60 mm to 75 mm, and the
installation mode must be standard mode. Three or more RRUs must be installed on a metal pole with a
diameter of 76 mm to 114 mm in a centralized way.

z It is recommended that only one RRU be installed on a U-steel or an angl e st eel.
z When installed on a tower, one RRU can be installed only in standard mode or reverse mode rather than

side-mounted. Two RRUs cannot be installed in back-to-back mode.

4

Dimensions and Installation Clearance

Dimensions of the RRU

a

b

285 mm

Recommended Clearance for a
Single RRU

≥300 mm

≥3

0

0

m

m

170 mm

485 mm

Minimum Clearance for a Single

c

RRU

200 mm

1

0

0

m

m

m

m

≥

0

0

8

≥500 mm

≥

6

Recommended Clearance for

d

Multiple Centralized RRUs

≥300 mm

m

m

0

0

5

≥

m

m

0

0

0

0

m

m

e

m

m

0

0

5

≥

≥

8

0

0

m

m

6

300 mm

Minimum Clearance for Multiple
Centralized RRUs

200 mm

m

m

0

0

3

4

0

0

m

m

m

m

0

0

3

6

0

0

m

m

≥500 mm

300 mm

5

Dimensions and Installation Clearance

Recommended Horizontal Spacing for

f g

Two RRUs Installed in Parallel

≥300 mm ≥600 mm ≥600 mm 100 mm 400 mm 400 mm

Recommended Vertical Spacing for

h

Two RRUs Installed in Parallel

Minimum Horizontal Spacing for Two
RRUs Installed in Parallel

Minimum Vertical Spacing for Two

i

RRUs Installed in Parallel

≥300 mm

≥500 mm

200 mm

300 mm

≥500 mm

300 mm

6

Installation Procedure

Preparing the Installation

Auxiliary bracket

Dual-nut bolt

Main bracket

Main and auxiliary brackets for the RRU

Cover plate

Front Back

Attachment plate

7

Installing the RRU on a Metal Pole

Installing a Single RRU on a Metal Pole

a

1. Install the main bracket.

When installing the
main bracket,
ensure that the
contact piece on
the bracket is fixed.

1200 mm～1600 mm

Contact piece

You may fit one end of the auxiliary bracket on one dual-nut bolt assembly and then the other end on the
other dual-nut bolt assembly during the installation.

2. Use an adjustable wrench to tighten the nut until the fastening torque is 40 N·m. In
this way, the main and auxiliary brackets are secured on the pole.

Fasten the two dual-nut bolt assemblies

40N•m

alternatively. After the brackets are secure,
use a tape to measure the spacing between
the main bracket and the auxiliary bracket at
the two sides and ensure that the spacing is
the same.

3. Install the RRU on the main bracket. When you hear click sound, you can infer that
the RRU is in position.

z The weight-bearing capacity of the RF
ports at the bottom of th e RRU is low. Do
not place the RRU at its bott om.

z During the operation, place the foam
pad or cardboard under the RRU to
prevent any damage to the housing of
the RRU.

8

Installing the RRU on a Metal Pole

Installing Two RRUs Back-To-Back on a Metal Pole

b

1. Install an RRU. For details, see page 8

Installing a Single RRU on a Metal Pole.

3. Reinstall the attachment plate and cover plate on the second RRU by interchanging
their positions.

2. Install the main fixture for another RRU.

4. Install the second RRU on the main bracket.

Ensure that the cabling
cavities of the two RRUs
face the same direction
when installing the RRUs.

M6X16

4.8N•m

In reverse mode

In standard mode

Cabling cavity

9

Installing the RRU on a Metal Pole

Installing Multiple RRUs in Centralized Mode

c

1. Install the main fixture and the auxiliary fixture. For details, see page 8

Installing a Single RRU in Ordinary Mode.

2. Relocate the attachment plate.

4. Install the second main fixture.3. Fit the tabs on the attachment plate of the

RRU into the anchor slots on the main fixture.

M6X16

4.8N•m

5. Fit the tabs on the attachment plate of
the second RRU into the anchor slots on
the second main fixture.

6. Install the third RRU.

10

Installing the RRU on a Metal Pole

Installing Multiple RRUs in Centralized Mode

c

7. Install the fourth main fixture.

8. Fit the tabs on the attachment plate of
the fourth RRU into the anchor slots on
the fourth main fixture.

9. Four RRUs installed in centralized mode. 10. Six RRUs installed in centralized mode.

11

Installing the RRU on a U-Steel

U-steel

Plan view

z The procedure for installin g the RRU on a U-ste el is the same as that for installing the RRU on a metal pole.
z It is recommended that only one RRU be installed on a U-steel.

Installing the RRU on an Angle Steel

Plan view

Angle steel

zThe procedure for installing the RRU on an angle steel is the same as that for installing the RRU on a metal
pole.

z It is recommended that only one RRU be installed on an angle steel.

12

Installing the RRU on a Wall

1. Place the auxiliary bracket at the installation position. Use a level to check that the
auxiliary bracket is placed horizontally. Then, mark the anchor points by using a
marking pen.

≥600 mm ≥600 mm

128 mm

Level

79 mm 79 mm

1200 mm to 1600 mm

z It is recommended that the auxiliary bracket be 1,200 mm to 1,600 mm above the ground.
z The RRUs cannot installed on a wall in centralized mode. Therefore, expansion bolt assemblies should be

prepared for each RRU.

RRU

2. Drill holes at the anchor points and then install the expansion bolt assemblies.

M10x65 bolt
Spring washer 10
Plastic tube
Flat washer 10
Expansion tube

55 mm to 60mm

Ø14

90°

Do not hammer the bolt entirely into the
wall. Instead, leave 20 mm to 30 mm of
the bolt outside the wall.

20 mmto 30 mm

After the expansion bolt is removed,
dispose of the plastic tube.

When the RRU is installed on a wall, the requirements are as follows:

z For one RRU, the wall has a weight-bearing capacity of 76 kg.
z The fastening torque of the expansion bolt reaches 30 N·m, the expansion bolt works properly, and no

damages such as cracks are on the wall.

13

Installing the RRU on a Wall

3. Fit the auxiliary bracket on the expansion
bolts downward, and then tighten the bolts
by using a combination wrench 17 mm.

M10

30N•m

Arrows are upwards

4. Install the main bracket.

5. Install the RRU.

14

Installing the RRU on a Wall

6. Install multiple RRUs.

Recommended Clearance :

≥760 mm ≥760 mm

Minimum Clearance:

560 mm 560 mm

Installing the RRU Cables

a

RRU Cable Connections

≥70 mm

≥70 mm

Cable List

Connector to…Connector TypeCable

Grounding bolt on the RRUOT terminal（M6)PGND cable

2

（16mm

(North American standard: 3.3 mm
European standard:
4 mm

the RRU and the RCU

)

DIN male connectorRRU RF jumper

DC RRU power cable

2

)

CPRI optical cable The connectors labeled 1A and 1B are connected to the optical

Two OT terminals

2

(M4）

DLC connector

DLC connector

Standard AISG female
connector

Nearest grounding barOT terminal（M8)
Ports labeled ANT_TX/RXA and ANT_TX/RXB on the RRU

(Only the ANT_TX/RXA port supports the OOK signal).
Feeder or antennaDIN male connector
The blue OT terminal is connected to socket labeled NEG(-)0 in

the RRU cabling cavity. And the black OT terminal is connected
to socket labeled RTN(+)0.

External power supplyBare wire

module on the port labeled CPRI_W on the RRU
The connectors labeled 2A and 2B are connected to port labeled

CPRI0, CPRI1 or CPRI2 on the LBBP board of the BBU.
Port labeled RET/MON on the RRUWaterproof DB9 connectorAISG multi-wire cable between
Standard AISG male connector of the AISG extension cable or

RCU

AISG extended cable between

the RRU and the RCU

Standard AISG female connector of the AISG multi-wire cableStandard AISG male

connector

Standard AISG male connector of the RCUStandard AISG female

connector

15

Installing the RRU Cables

a

RRU Cable Connections

Single RRU

z When the length of the AISG multi-wire cable is
not enough, you can choose the optional AISG
extension cable.

z If the coaxial cable is used for the RET antenna
when the STMA or Smart Bias-Tee (SBT) is used,
the OOK signals are required. Therefore, the RET
control signal cable needs to be connected to the
ANT_TX/RXA port.

PGND cable
RRU RF jumper

DC RRU power cable
CPRI optical cable

AISG multi-wire cable between
the RRU and the RCU

AISG extended cable between
the RRU and the RCU

Antenna

RCU

Multiple RRUs

PGND cable
RRU RF jumper
DC RRU power cable

CPRI optical cable

AISG multi-wire cable
between the RRU and
the RCU

AISG extended cable
between the RRU and
the RCU

External power

system

Antenna

Antenna

External power

system

Antenna

For detail information of the cable, see Cable List on Page 15.

16

Installing the RRU Cables

Opening the Cover Plate

b c

of the RRU Cabling Cavity

M4

Cover plate of the

cabling cavity

Cabling cavity

Label for preparing
the power cable

d Cable Connections on the RRU

Cabling Cavity of the RRU

Cable troughs for

power cables

Cable troughs for

optical cables

Cable troughs for

power cables

cable clip

Waterproofing filler

z Use the power cable clip to press t h e
shielding layer tightly and ensure that
the lower part of the shielding layer does
not exceed the position shown in the
preceding figure.

z Ground the shielding layer at the
other end of the power cable.

z Do not remove the dustproof cap from
the idle antenna port, and use the
waterproof tape to wrap the joint.

z For details on how to add OT
terminals to the power cable of the RRU,
see page 23 " Adding OT Terminals by
Using a Wire Stripper."

z When wrapping the waterproof tape,
apply even force to extend the tape until
the width of the tape is 1/2 of the
original width.

z Wrap the joint spirally upward,
downward, and then upward again. In
other words, the joint is wrapped by
three layers of the tape. Ensure that the
two immediate layers overlap with each
other about half the width of the tape.
For details, see page 25 “Waterproofing
Outdoor Cables.”

z Install the optical module before
installing the optical cables. For details,
see page 25 “Installing the Optical
Module.”

CPRI optical cable

Shielding
layer of the
power cable

Power cable

RF jumper

After the cables
are installed on
the RRU, insert
the waterproofing
fillers into the idle
cable troughs.

First wrap the joint
with the waterproof
tape, and then
wrap the joint with
the PVC insulating
tape.

17

Installing the RRU Cables

e

Closing the Cover Plate of the RRU Cabling Cavity

M4

z The screws on the cover plate should be
tightened until the fastening torque is 1.4 N·m.

z Tighten the screws on the cover plate of the
cabling cavity in the sequence shown in the figure.

1.4N•m

RRU+APM30/APM30H (Ver.A)

f

Grounding the shielding layer
of the power cable:

DC RRU power cable

CPRI optical cable

LOAD4

Metal Shielding layer (25 mm) PGND cable

z The DC RRU power cable is connected to one of the LOAD4 to LOAD9 terminals of the PDU.
z Strip the jacket of th e DC RRU power cable for a small part, press the exposed shielding layer on the

strap, and then connect the PGND cable on the strap to the nearest grounding bolt on the side in the
APM30/APM30H(Ver.A).

18

Installing the RRU Cables

g

RRU+APM30(+24V) / APM30H(Ver.B, +24V)

Grounding the shielding layer
of the power cable:

DC RRU power cable

CPRI optical cable

LOAD0

Metal Shielding layer (25 mm) PGND cable

z Strip the jacket of the D C RRU power cable for a small part, press the ex posed shielding layer on the
strap, and then connect the PGND cable on the strap to the nearest grounding bolt on the side in the
APM30.

z The DC RRU power cable is connected to one of the LOAD0 to LOAD5 terminals of the DCDU-03B.

19

Installing the RRU Cables

h

RRU+APM30H (Ver.B)

Grounding the shielding layer
of the power cable:

DC RRU power cable

CPRI optical cable

RRU0

Metal Shielding layer (25 mm) PGND cable

z The DC RRU power cable is connected to one of the RRU0 to RRU5 terminals of the PDU.
z Strip the jacket of th e DC RRU power cable for a small part, press the exposed shielding layer on the

strap, and then connect the PGND cable on the strap to the nearest grounding bolt on the side in the
APM30H(Ver.B).

20

Installing the RRU Cables

i

RRU+TMC

Grounding the shielding layer
of the power cable:

DC RRU power cable

CPRI optical cable

LOAD0

Metal Shielding layer (25 mm) PGND cable

The DC RRU power cable is connected to one of the LOAD0 to LOAD5terminals of the DCDU-03B.

21

Installing the RRU Cables

j

RRU+TMC11H(Ver.A) / TMC11H(Ver.B)

Grounding the shielding layer
of the power cable:

DC RRU power cable

CPRI optical cable

LOAD0

Metal Shielding layer (25 mm) PGND cable

The DC RRU power cable is connected to one of the LOAD0 to LOAD5terminals of the DCDU-03B.

22

Installing the RRU Cables

RRU+BBU Installed Against the Wall

k

DC RRU power cable

CPRI optical cable

DCDU panel facing
the side, and the
BBU panel facing
downward

LOAD0

shielding layer

z When connecting the DC RRU power cable to the DCDU-03B you must add an OT terminal to the shielding
layer. Then, fix the OT terminal to the corresponding GND terminal of the DCDU-03B. For details on how to
add an OT terminal, see page 27 Adding OT Terminals to the Shielding Layer of the DC RRU Power Cable.

z The DC RRU power cable is connected to one of the LOAD0 to LOAD5 terminals of the DCDU-03B.

23

RRU Hardware Installation Checklist

ItemsNo.

The position for each equipment conforms to the engineering design and meets the space requirement. Sufficient

1

space is reserved for equipment maintenance.
The RRU is properly installed.2
The cover plate is fastened to the RRU cabling cavity.3
Waterproof check: The empty cable troughs in the cabling cavity of the RRU are waterproofed. The cover plate is

4

tightly buckled on the cabling cavity of the RRU. The RF ports that are not connected with RF cables are capped and
waterproofed. The waterproof caps are fastened.

No joint lies in the middle of the power cable or the PGND cable.5
The lugs at both ends of the power cable or the PGND cable are securely soldered or crimped.6
The power cable and PGND cable are not short-circuited or reversely connected and are not damaged or broken.7
The power cable, PGND cable and other cables need to be bound separately.8
The working grounding and protection grounding of the base station and the lightning protection grounding of the

9

building share one group of grounding conductors.
The connectors of signal cables are intact and securely linked. And the signal cables are not damaged or broken.10
All labels, tags, and nameplates are correct, legible, and complete. All the labels at both ends of the cables, jumpers

11

and feeders are legible.

Powering On the RRU

Start

a

Check

whether the input

voltage of the RRU is

normal?

Yes

Power on the RRU

b

Check

whether the status of

the LEDs on the RRU

is normal?

No

No

Rectify the fault

Rectify the fault

Power off the RRU

a

Normal input voltage of the
RRU:
If the BBU is supplied with

-48 V DC power, the
external input power
voltage ranges from -57 V

DC to -36 V DC.

b

Normal status of the
LEDs on the RRU:

RUN LED: ON for 1s
and OFF for 1s
ALM LED: OFF

Yes

End

When the RRU is unpacked, it must be powered on within 24
hours. Each time the RRU is maintained after being put into use,
the power-off duration cannot exceed 24 hours.

24

Appendix

a Binding the RRU and Installation Components

1. Bind the RRU by leading the lifting rope along the low er part of the adapti ng piece and
through the handle, bind the main and auxiliary brackets with the lifting rope, and then
bind the steering rope with the handle of the RRU, as shown in the following figures.

Lifting rope

Steering rope

Lower part of the
adapting piece

z When lifting the RRU and installation components to the tower,
prevent the RRU from colliding with the tower.

z Lift the RRU to the tower before it is installed on th e met al p ole ,
angle steel, or U-steel.

2. Lift the RRU and installation components to the tower.

Pulley

A

z Installer A climbs onto the tower. Then, installer
A fixes the pulley to the support of the tower
platform and leads the lifting rope through the
pulley.

Lifting rope

B C

Steering rope

z Installer C uses a lifting rope to bind the RRU
and installation components as shown in the
preceding figure and then ties a knot in the steering
rope at the handle of the RRU.

z Installer B pulls the lifting rope, and at the same
time, installer C pulls the steering rope away from
the tower to prevent the RRU and installation
components from colliding with the tower.

z Installer A holds the RRU and installation
components and untie the ropes.

Do not bind the lifting rope
only on the handle when
lifting the RRU.

25

Appendix

b

Adding OT Terminals by Using a Wire Stripper (Recommended)

Adding the OT terminals to the power cable invo lves adding OT terminals to the DC
RRU power cable and adding OT terminals to the shielding layer of the DC RRU power
cable.

Label for preparing

-48V DC power cable

Shielding layer

-48V DC power wire

OT terminals

GND wire

Determine lengths of power cables for
different operations according to the scales on
the inner side of the cover plate of the cabling
cavity.

the power cable

010203040

14mm

8mm

Based on the determined length, remove the
jacket and shielding layer off the power cable.

Remove the jacket from each wire.

Add an OT terminal to each wire.

Strip a 15 mm jacket off the power cable to
reveal the shielding layer o f t he p o wer ca bl e

15mm

The OT terminals must be added to the power cable before the RRU is installed on a metal pole.

26

Appendix

Adding OT Terminals to the Shielding Layer of the DC RRU Power Cable

c

Wrap the PVC
insulating tape
at the joint
where the three
wires meet.

WARNING

Do not damage the shielding layer of the power cable when cutting around the jacket.

Lead the wires
made of the
shielding layers
through heat­shrinkable tubes.

OT terminal on
the shielding
layer

27

Appendix

Waterproofing Outdoor Cables

d

z The waterproof tape should be wrapped for an extra length of 20
mm away from the connectors at both ends.

z The tapes should be wrapped around the connector from the
lower part to the upper part. When wrapped for another layer, the
tapes may not be cut.

z When wrapping the waterproof tape, apply even force to extend
the tape until the width of the tape is 1/2 of the original width.

z When wrapping the waterproof tape, ensure that the upper layer
of the tape covers at least 50% of the lower layer.

z The insulating tape should be wrapped for an extra length of 20
mm away from the connectors at both ends.

z The last layer of the waterproof tape should be wrapped from the
lower part to the upper part to prevent rainwater from infiltrating into
the tape.

1. Wrap three layers of waterproof tape.

Waterproof tape

Insulating tape

2. Wrap three layers of insulating tape.

Tightly pressing the tape

Installing the Optical Module

e

Tightly pressing the tape

tie

tie

Binding cable ties at both
ends of the tape

28

Appendix

f

Pin Assignment of the RRU AISG Extension cable

Pin of the AISG
male connector

InstructionWire TypeWire ColorPin of the AISG

female connector

+12VTwisted pairWhite/blueX2.1X1.1

Blue

DC Return ATwisted pairWhite/orangeX2.7X1.7

Orange

RS485 BTwisted pairWhite/greenX2.3X1.3

RS485 AGreenX2.5X1.5

+24VTwisted pairWhite/brownX2.6X1.6

Brown

29

Change History

This describes the changes in the RRU3808 Installation Guide.

z04（2010-03-05)
This is the fourth commercial release.
Compared with issue 03 (2009-12-10) of V200, the description on the cross-section area of the
RRU power cable is added.

z03（2009-12-10)
This is the third commercial release.
Compared with issue 02 (2009-09-25) of V200, the installation scenarios of APM30H(Ver.B),
APM30H(Ver.B, +24V), TMC11H(Ver.B) are added.

z02 (2009-09-25)
This is the second commercial release.
Compared with issue 01 (2009-08-04) of V200, the requirements for installation support
structure are modified.

z01 (2009-08-04)
This is the initial commercial release.

30

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Shenzhen 518129

People’s Republic of China

www.huawei.com