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MA5600T, MA5603T, and MA5608T Hardware Description 25

This manual describes the Huawei MA5600T, MA5603T, and MA5608T hardware specifications, such as dimensions, weight, power consumption, capacity, structure, chassis, slots, boards, power modules, and optical modules.
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H805VDTF Board Description

H805VDTF Board Description

The H805VDTF is a 24-port VDSL2 over ISDN service board. It works with the VDSL transceiver unit-remote end (VTU-R) through the VDSL port to support the VDSL2 service.

Functional Specifications

Please refer to "24-Channel VDSL2 Service Board Comparison".

Technical Specifications

Please refer to "Power Consumption and Maximum Frame Size of Boards".

Working Principle

Figure 3-118  Working principle of the H805VDTF board

The basic working principle of the H805VDTF board is as follows:
  • The control module loads the board software, controls the running of the board, and manages the entire board.
  • The protection module protects and isolates the board from lightning strikes. The DC block isolates the direct current. The protector protects the high voltage.
  • The forwarding module converts between ATM/PTM services and IP services, and also supports flow control and scheduling.
  • The interface module provides the ports for information exchange.
  • The power module supplies power to each functional module of the board.
  • The clock module provides clock signals for each functional module of the board.
The service process is as follows:
  • In the upstream direction, the interface module converts the VDSL2 signals into a cell flow, aggregates the flow to the forwarding module, and then reorganizes the cell flow into ATM/PTM packets. The forwarding module encapsulates the reorganized ATM/PTM packets into IP packets and performs CAR on the IP packets. The IP packets are transmitted to the backplane bus through the backplane port and then to the control board. After being processed by the control board, the IP packets are transmitted upstream to the upper level device through the optical or electrical port.
  • In the downstream direction, the forwarding logical decapsulates the IP packets from the Ethernet, performs CAR on the IP packets, reorganizes the IP packets into ATM/PTM packets, and transmits the ATM/PTM packets to the interface module. The interface module converts the ATM/PTM packets into analog signals and transmits the signals to subscriber lines.

Front Panel Port



  • When cables from the xDSL ports are routed to an outdoor environment or the user side, the MDF must be installed with a protective unit.

Indicator

Indicator

Name

Color

Status

Meaning

RUN ALM

Running status indicator

Red

Blinking

The board enters the APP start phase during the board startup

Green

Blinking slowly (on for 1 s and off for 1 s repeatedly)

The board works in the normal state

Green

Blinking quickly (on for 0.25 s and off for 0.25 s repeatedly)

The board enters the phase of communication with the control board during its startup

Red

On

The board is faulty

BSY

Port status indicator

Green

On

At least one service port is activated

-

Off

No service port is activated

Pin Assignments

Table 3-112 describes the pin assignments of the xDSL port of the H805VDTF board. The H805VDTF board uses only the first 24 channels of signals.

Table 3-112  Pin assignments of the xDSL port

Pin

Signal

 

Pin

Signal

Port

Pin

Signal

 

Pin

Signal

64

15

 

48

7

32

16

 

16

-

63

47

31

15

62

14

46

6

30

17

14

-

61

45

29

13

60

13

44

5

28

18

12

-

59

43

27

11

58

12

42

4

26

19

10

-

57

41

25

9

56

11

40

3

24

20

8

-

55

39

23

7

54

10

38

2

22

21

6

-

53

37

21

5

52

9

36

1

20

22

4

-

51

35

19

3

50

8

34

0

18

23

2

-

49

33

17

1

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Updated: 2019-03-18

Document ID: EDOC1000060621

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