H83DCCME

H83DCCME is a 48-channel VDSL2 and POTS combo service board that provides VDSL2 and POTS integrated access services. It has an embedded splitter. It supports vectoring.

Functions and Specifications

For details, see Differences Between Combo Boards.

 NOTE:

The H83DCCME board uses the DC-C but not DC-I grounding mode.

DC-C and DC-I grounding modes are as follows:

• In DC-C grounding mode, GND, PGND, and BGND are connected.

• In DC-I grounding mode, BGND (grounding of the 48 V DC return current) is separated from PGND (grounding of the device shell) and GND (grounding of the device interior) while PGND and GND are connected.

Power Consumption

For details, see Board Power Consumption.

Working Principles

Figure 1 shows the working principles of the H83DCCME board.

Figure 1 Working principles of the H83DCCME board

The H83DCCME board can be divided into two parts: the broadband part and the narrowband part. The basic working principles of the board are as follows:

• Narrowband service processing:

• The narrowband service control module encodes and decodes voice signals and converts analog signals into digital signals.

• The narrowband interface module provides access to 48-channel narrowband services.

• Broadband service processing:

• The control module enables the control board to manage and configure broadband services.

• The broadband service module implements functions, such as encoding/decoding, A/D conversion, and line driving for VDSL2 services.

• The broadband interface module converts VDSL2 line signals to cell flows.

• The protection module protects and isolates the board from lightning strikes.

• The splitter module couples broadband and narrowband subscriber lines and separates POTS signals from VDSL2 signals.

Front Panel Port

Indicator

Pin Assignments

Table 1 and Table 2 describe pin assignments of the LINE ports on the front panel of the H83DCCME board.

Jumper Settings

The H83DCCME board provides two jumpers, J13 and J24, as shown in Figure 2.

Figure 2 Layout of the jumpers on the H83DCCME board

Table 3 describes settings of J13 and J24.