The FA16 H301CDI board (referred to as CDI board) is a 16-channel direct dial-in subscriber interface board, which realizes analog subscriber port pass-through.The CDI board utilizes digital-to-analog conversion between CDI ports and ASL ports, transparent transmission, and host signaling processing, and can realize transparent extension of the analog subscriber ports of other externally connected switches within the FA16 system.
Product Description
The H301CDI board (CDI board for short) is a 16-way direct dial-in user interface board.
FA16 H301CDI/A Working Principle
Main Functions and Principles The CDI board mainly accomplishes the function of direct dial-in, which is inserted in the slot of the user board, and each channel can dynamically occupy any one of the two HW time slots. It accomplishes the following functions.
Detect polarity;
Detecting feeder;
Dial-in function (double tone, pulse);
Dynamic occupation of time slots;
Detection of ringing current;
Detection of signaling tones;
Tap-fork transfer, etc.
The principle of CDI single board is shown in Fig. 1 and Fig. 2.
Fig. 1 Schematic diagram of H301CDI single board
Figure 2 H601CDI single board schematic diagram
The basic principle of CDI single board is described as follows:
The control module controls the switching module while monitoring the status of the line module in real time to realize the management of the whole board.
The line module H301CDI provides 16-channel analog user interface externally and H601CDI provides 16-channel FXO interface externally to realize A/D and D/A conversion.
The switching module realizes the time slot switching function.
FA16 CDI Panel Description
CDI panel description is shown in Table 1 and Table 2.
Table 1 H301 CDI Panel and Description
| ||
RUN: Running Status Indicator | ||
Indicator light blinks as follows when non-shielded puller bar: | ||
Red light 0.5s on 0.5 off cycle blinking | Abnormal communication with the host | |
Red light 1s on 1s off cycle blinking | Normal work of the single board | |
Red light 0.125s on 0.125s off blinking 3s | Self-test did not pass | |
Indicator light blinks as follows when shielding the puller bar: | ||
Green light 0.5s on 0.5 off cycle blinking | Abnormal communication with host | |
Green light 1s on 1s off cycle blinking | The single board is working normally | |
Green light 0.125s on 0.125s off blinking 3s | Self-test did not pass | |
CH0～CH15: Channel monitoring light | ||
Green light is always on | Corresponding channel is occupied | |
Green light off | Corresponding channel is idle | |
Table 2 H601CDI Panel and Description
| ||
RUN: Operation status indicator | ||
Indicator light blinks as follows when non-shielded handle bar: | ||
Green light 0.5s light 0.5 off cycle blinking | Abnormal communication with the host | |
Green light 1s on 1s off cycle blinking | Normal work of the single board | |
Green light 0.125s light 0.125s extinguish fast flash 5s | Self-test did not pass | |
Green light time is less than 20s | Single board initialization self-test | |
CH0～CH15: Channel monitoring light | ||
Green light is always on | Corresponding channel is occupied | |
Green light off | Corresponding channel is idle | |
FA16 H301CDI External Interface
The CDI interfaces are distributed on the backplane or the corresponding adapter board, and the interface descriptions are shown in Table 3 and Table 4.
Table 3 H301CDI interface description
Interface | Function | Position | Connection Description |
|---|---|---|---|
16-channel POTS user interface | For accessing POTS signals. | Backplane (Rear Maintenance Frame) | Connects to the Patch Panel using a 32-way subscriber cable (ports 0 to 7, 24 to 31). |
SLTF (Front Maintenance Frame) | Use 32-way user cables (0 to 7, 24 to 31 ports) to connect to the patch panel. |
Table 4 H601CDI Interface Description
Interface | Function | Position | Connection Description |
|---|---|---|---|
16-channel FXO interface | Docking with FXO interface. | Backplane (Rear Maintenance Frame) | Connects to the Patch Panel using a 32-way subscriber cable (ports 0 to 7, 24 to 31). |
SLTF (Front Maintenance Frame) | Use 32-way user cables (0 to 7, 24 to 31 ports) to connect to the patch panel. |
This product technical parameters and product features provided by Shenzhen Guihang Network Technology Co., Ltd (www.opticaltrans.com), reproduced please retain. Huawei SDH Optical Transmission Equipment,SDH Transmission Equipment Sales Tel: 18529092692 Welcome to call us!
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