CN217985075U

CN217985075U - Three-level cascade communication system with protection link

Info

Publication number: CN217985075U
Application number: CN202222407421.9U
Authority: CN
Inventors: 陈妃; 陶鹏飞; 郑州; 汤长龙; 王文月; 吴凯律; 毛建国; 徐双燕; 林闯
Original assignee: Shenou Communication Equipment Co ltd
Current assignee: Shenou Communication Equipment Co ltd
Priority date: 2022-09-08
Filing date: 2022-09-13
Publication date: 2022-12-06
Anticipated expiration: 2032-09-13

Abstract

A three-level cascade communication system with a protection link is characterized in that: including I level equipment, I level equipment is connected with a plurality of II level equipment of group, II level equipment includes the main control board, a plurality of first user boards and a plurality of user extend the board, the user extends the board and is connected with III level equipment, if there is not longer distance transmission demand, can the lug connection user telephone through first user board, can realize the second grade and cascade the communication, if need longer distance transmission, then accessible user extends the board, make II level equipment can further connect III level equipment, and cooperate the optical fiber connection of light mouth, make transmission distance unrestricted.

Description

Three-level cascade communication system with protection link

Technical Field

The utility model relates to the field of communication technology, concretely relates to take tertiary cascade communication system of protection link.

Background

In the application of a traditional optical transmission network, a two-stage cascade communication system is usually set, the current two-stage cascade communication system comprises I-stage equipment and II-stage equipment, the I-stage equipment is a convergence end, 1 convergence end can correspond to 16 II-stage equipment, the II-stage equipment is grounded on a 60-path telephone, 1+1 protection is carried out on a coaxial cable between the I-stage equipment and the II-stage equipment through 2, the convergence end of the I-stage equipment can monitor the state of the II-stage equipment, and the self-checking function of the II-stage equipment is controlled. However, the class I device and the class II device are connected by a coaxial cable, and the transmission distance is very limited, which is difficult to meet the transmission requirement of longer distance in some places.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of background art, the utility model provides a take tertiary communication system that cascades of protection link.

The utility model discloses the technical scheme who adopts: a three-level cascade communication system with a protection link comprises I-level equipment, wherein the I-level equipment is connected with a plurality of groups of II-level equipment, and each group of II-level equipment is connected with a plurality of groups of III-level equipment;

the I-level equipment comprises a plurality of groups of data acquisition units, each group of data acquisition units comprises a first data transmission module, a first coding and decoding module and first ports which are sequentially connected, two first ports are arranged, and a first channel selection module is arranged between the first coding and decoding module and the two first ports;

the II-level equipment comprises a main control board, a plurality of first user boards and a plurality of user extension boards, wherein the main control board comprises a second data transmission module, a second coding and decoding module and second ports which are sequentially connected, two second ports are arranged, a second channel selection module is arranged between the second coding and decoding module and the two second ports, the two second ports are respectively in signal connection with the two first ports of one group of data acquisition units, and the second data transmission module is respectively connected with the first user boards and the user extension boards through a BUS (BUS);

the user extension board comprises a third coding and decoding module and two third ports, the third coding and decoding module is connected with the second data transmission module through a BUS, and a third channel selection module is arranged between the third coding and decoding module and the two third ports;

the III-level equipment comprises a fourth data transmission module, a fourth coding and decoding module and a fourth port which are connected in sequence, the number of the fourth ports is two, a fourth channel selection module is arranged between the fourth coding and decoding module and the two fourth ports, the two fourth ports are respectively in signal connection with the two third ports of the user extension plate, and the fourth data transmission module is connected with the second user plate through a BUS BUS.

The first port and the second port are both electric ports and are connected through a coaxial cable.

And the third port and the fourth port are both optical ports and are connected through optical fibers.

The utility model has the advantages that: by adopting the scheme, the first user board and the user extension board are arranged in the II-level equipment, if no longer distance transmission requirement exists, the second-level cascade communication can be realized by directly connecting the user telephone through the first user board, and if longer distance transmission is needed, the user extension board can be used for enabling the II-level equipment to be further connected with the III-level equipment and being matched with the optical fiber for connection, so that the transmission distance is not limited.

Drawings

Fig. 1-2 are schematic structural diagrams of a three-level cascade communication system according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of the principle of the electrical port channel selection module according to the embodiment of the present invention.

Fig. 4 is a light port channel selection module according to an embodiment of the present invention.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1-2, a three-level cascade communication system with a protection link comprises a level I device 1, wherein the level I device 1 is connected with a plurality of groups of level II devices 2, and each group of level II devices 2 is connected with a plurality of groups of level III devices 3.

I level equipment 1 is for converging the end, and it can adopt applicant company's product model to be SOC 5080's optical transceiver, and it is including a plurality of data acquisition units of group, and every data acquisition unit of group all includes first data transmission module 11, first codec module 12 and the first port 13 that connects gradually, first port 13 is equipped with two, and is equipped with first passageway selection module 14 between first codec module 12 and two first ports 13.

II level equipment 2 includes main control board 4, each first user board 5 of N and the individual user of M extends board 6, be equipped with second data transmission module 41, second codec module 42 and the second port 43 that connects gradually on the main control board 4, second port 43 is equipped with two, and is equipped with second passageway selection module 44 between second codec module 42 and two second ports 43, and two second ports 43 respectively rather than two first port 13 signal connection of a set of data acquisition unit among them, first user board 5 and user extend board 6 are connected respectively through the BUS to second data transmission module 41.

The user extension board 6 includes a third codec module 61 and two third ports 62, the third codec module 61 is connected to the second data transmission module 41 through a BUS, and the third codec module 61 and the two third ports 62 are provided with a third channel selection module 63.

The class III device 3 includes a fourth data transmission module 31, a fourth codec module 32 and a fourth port 33 connected in sequence, the fourth port 33 is provided with two, and a fourth channel selection module 34 is provided between the fourth codec module 32 and the two fourth ports 33, the two fourth ports 33 are respectively connected with two third ports 62 of the user extension board 6, and the fourth data transmission module 31 is connected with the second user board 35 through a BUS.

The first data transmission module 11, the second data transmission module 41, and the fourth data transmission module 31 are configured to transmit a code stream and a control signal.

The first codec module 12, the second codec module 42, the third codec module 61, and the fourth codec module 32 are used for encoding and decoding a code stream signal, and encode the code stream in HDB3 format during encoding, and pack the encoded data and the control signal into electric port transmission frame format or optical port transmission frame format, and receive frame data at the electric port or the optical port during decoding, and extract the states of the II-level device and the III-level device and the code stream data in HDB3 format, and perform HDB3 decoding on the code stream data.

The first port 13, the second port 43, the third port 62, and the fourth port 33 are used for signal connection, wherein the first port 13 and the second port 43 are both electrical ports and are connected through a coaxial cable, and the third port 62 and the fourth port 33 are both optical ports and are connected through an optical fiber.

The first channel selection module 14, the second channel selection module 44, the third channel selection module 63 and the fourth channel selection module 34 are used for channel selection, two first ports 13, two second ports 43, two third ports 62 and two fourth ports 33 are arranged and connected through coaxial cables or optical fibers, each channel selection module can select to be connected with one of the ports, 1+1 protective links can be formed by adopting the scheme, and once one link fails, the channel selection modules can be used for selective switching, so that normal work is guaranteed.

The first subscriber board 5 and the second subscriber board 35 use FXS boards, each of which is capable of connecting 8 phones.

The working principle of the three-level cascade communication system with the protection link is as follows:

1. the I-level equipment is a convergence end, the first data transmission module 11 sends a code stream and a control signal to the first coding and decoding module 12, the first coding and decoding module 12 packages data into an E1 transmission format and then sends the data to the first channel selection module 14, the data are simultaneously sent to the first ports 13 of the 2 channels, and the data are transmitted to the main control board of the II-level equipment through the coaxial cable.

2. The data received by the second ports 43 of the class II device 2 are respectively transmitted to the second channel selection module 44 for selection, wherein a group of data is sent to the second codec module 42 for decoding and extraction, and then sent to the second data transmission module 41, and transmitted to the first user board 5 or the user extension board 6 through the BUS.

3. If there is no longer distance transmission requirement, the data can be directly transmitted to the first user board, and the I-class device can have the functions of voice communication and line self-checking.

4. If the data needs to be transmitted for a longer distance, the data is transmitted to the user extension board 6, the third codec module 61 on the user extension board 6 repacks the data into the format of E1, and then transmits the data to the third channel selection module 63, and simultaneously transmits the data to the third ports 62 of the 2 channels, and transmits the data to the class III device through the optical fiber.

5. Data received by the 2 fourth ports 33 of the class III device are transmitted to the fourth channel selection module 34 for selection, wherein a group of data is sent to the fourth codec module 32 for decoding and extraction, then sent to the fourth data transmission module 31, and transmitted to the second user board 35 through the BUS, and the class i device can manage the class III device, and has functions of optical port status, voice communication and line self-inspection.

By adopting the scheme, the first user board and the user extension board are arranged in the II-level equipment, if no longer distance transmission requirement exists, the second-level cascade communication can be realized by directly connecting the user telephone through the first user board, and if longer distance transmission is needed, the user extension board can be used for enabling the II-level equipment to be further connected with the III-level equipment and to be matched with the optical fiber connection, so that the transmission distance is not limited.

By adopting the scheme, the current required functions can be met according to the requirements of users, the equipment configuration is flexible, the transmission distance is not limited, the equipment types and the economic cost are greatly reduced, meanwhile, a 1+1 protection link is formed, the networking scheme has high reliability, and the equipment node faults are integrally reduced.

The skilled person should know that: although the present invention has been described according to the above embodiments, the inventive idea is not limited to this embodiment, and any application of the inventive idea is also included in the scope of the patent right protection.

Claims

1. A three-level cascade communication system with a protection link is characterized in that: the system comprises I-level equipment (1), wherein the I-level equipment (1) is connected with a plurality of groups of II-level equipment (2), and each group of II-level equipment (2) is connected with a plurality of groups of III-level equipment (3);

the I-level equipment (1) comprises a plurality of groups of data acquisition units, each group of data acquisition units comprises a first data transmission module (11), two first coding and decoding modules (12) and two first ports (13) which are sequentially connected, and a first channel selection module (14) is arranged between each first coding and decoding module (12) and each first port (13);

the II-level equipment (2) comprises a main control board (4), a plurality of first user boards (5) and a plurality of user extension boards (6), wherein the main control board (4) comprises a second data transmission module (41), a second coding and decoding module (42) and second ports (43) which are sequentially connected, two second ports (43) are arranged, a second channel selection module (44) is arranged between the second coding and decoding module (42) and the two second ports (43), the two second ports (43) are respectively in signal connection with the two first ports (13) of one group of data acquisition units, and the second data transmission module (41) is respectively connected with the first user boards (5) and the user extension boards (6) through a BUS (BUS);

the user extension board (6) comprises a third coding and decoding module (61) and two third ports (62), the third coding and decoding module (61) is connected with the second data transmission module (41) through a BUS BUS, and a third channel selection module (63) is arranged between the third coding and decoding module (61) and the two third ports (62);

III level equipment (3) are including fourth data transmission module (31), fourth codec module (32) and fourth port (33) that connect gradually, fourth port (33) are equipped with two, and are equipped with fourth passageway selection module (34) between fourth codec module (32) and two fourth ports (33), two fourth ports (33) respectively with two third port (62) signal connection of its user extension board (6), fourth data transmission module (31) are through BUS BUS connection second user board (35).

2. The three-stage cascade communication system with the protection link according to claim 1, wherein: the first port (13) and the second port (43) are both electric ports and are connected through a coaxial cable.

3. The three-stage cascade communication system with the protection link according to claim 1, wherein: the third port (62) and the fourth port (33) are both optical ports and are connected through optical fibers.