CN203377941U - A PCM device for telephone internal line tests and external line tests - Google Patents

Abstract

A PCM device for telephone internal line tests and external line tests comprises a local-end PCM device and a far-end PCM device. The local-end PCM device is of a centralized structure and comprises a sub-frame, power boards and a plurality of branch boards, and each branch board comprises a system control circuit, a wire grabbing circuit, a transmission link interface, a plurality of telephone modules, an Ethernet module and an internal line test module. The far-end PCM device is of a 19-inch 1U case structure and is internally provided with a system mainboard. A system control circuit, a wire grabbing circuit, functional module slots, a power interface, a power switch, a transmission link interface and a business wiring port are installed on the system mainboard. A plurality of telephone modules, a plurality of Ethernet modules, an internal line test module, an external line test module and a remote monitoring module can be installed in the functional slots. Each of the two ends of the case structure is provided with a grounding terminal. The PCM device can be used for telephone extension, telephone internal line tests and subscriber external line tests and has the advantages of wide test range and high accuracy.

Description

A kind of inside connections test and Loop test PCM equipment

Technical field

The utility model belongs to communication equipment field, particularly a kind of inside connections test and Loop test PCM equipment.

Background technology

In the maintenance of existing telephone network, because subscriber's line distributes extensively, environment is severe, and maintenance is very difficult.Sound circuit fault, short circuit, broken string, ground vapour, defective insulations etc. all can cause the user not converse or speech quality descends, therefore, carry out fast the test of voice pathway and subscribers feeder outside line parameter and fault location significant for improving electric wire service quality and reducing working strength; And present PCM communication equipment, the general interior and exterior lines automatic on-line test function that voice channel is not provided, can only rely on independent instrument or special testing equipment, and such PCM functions of the equipments are single, can not meet user's requirement; Traditional test telephone interior lines and the method for user outline are the artificial professional instrument of using, be if equipment or circuit have broken down, just can only be by manually equipment and line sectionalizing test being investigated, until find out fault point, this method of testing efficiency is extremely low, workload is very large, and the malfunction elimination time is also very long, during test, also must cause interrupting service.

The utility model content

For for the deficiencies in the prior art, the utility model provides a kind of volume little, handsome in appearance, the PCM equipment of fitting operation supporting telephone interior lines and the test of outside line automatic route selection easily.

The utility model solves the technical scheme that its technical problem adopts:

A kind of inside connections test and Loop test PCM equipment, be comprised of local side PCM equipment and far-end PCM equipment; It is characterized in that: described local side PCM equipment is centralized configuration, sub-frame, power panel and tributary card, consists of; Described sub-frame is equipped with power interface, and 2 power supply board slot positions, 14 business board slot positions can be provided; Described power panel is equipped with mains switch, power module; Described tributary card by system, control circuit, grab line circuit, LI(link interface), functional module slot and Wiring port and form; Functional module slot can pack into some phone modules, ethernet module, Tester of Inner Line; Described far-end PCM equipment is case structure, cabinet and circuit board, consists of; Respectively there is an earth terminal at described cabinet two ends; Described circuit board by system board and on control circuit, grab line circuit, function slot, power interface, mains switch and Wiring port and form; Described function slot can be installed some phone modules, ethernet module, Tester of Inner Line, Tester of Outer Line and remote monitoring module.

As further improvement of the utility model: the described sub-frame of local side PCM equipment is 19 inches casings that 6U is high.

As further improvement of the utility model: the described cabinet of far-end PCM equipment can be 19 inches casings that 1U is high.

As further improvement of the utility model: on the system board of the tributary card of described local side PCM equipment and far-end PCM equipment, system, control circuit is installed, grabs line circuit, some function slots; Described slot can pack into some phone modules, ethernet module, Tester of Inner Line, Tester of Outer Line and remote monitoring module.

As further improvement of the utility model: local side user interface, local side transmission link interface are installed on the Wiring port plate of described local side PCM equipment.

As further improvement of the utility model: respectively there is an earth terminal at the Wiring port plate two ends of described far-end PCM equipment, and remote subscriber interface, power interface, mains switch and far-end transmission link interface also are installed on its system board.

Described transmission link interface can be monochromatic light mouth, Shuan Guangkou, single electricity port, two electricity mouth or light one electrical interface.

As further improvement of the utility model: the connector of described user interface can adopt the RJ45 socket, described RJ45 socket can directly connect RJ11 or RJ45 connector, or realizes patching of DB9, DB25, DB62 and M34 style connector by conversion cable.

Compared with prior art, the beneficial effects of the utility model are:

A) provide 30 tunnel user optional interface, wide in variety, be convenient to the access of multiple business;

B) support the automatic on-line test of speech channel interior and exterior lines;

C) speech interface is supported caller identification;

D) can provide anti-polar signal;

E) support remote testing and network management monitoring;

F) perfect status display function, be convenient to maintenance management;

G) volume is little, handsome in appearance, and fitting operation is convenient.

The accompanying drawing explanation

Fig. 1 to Fig. 6 is partial structurtes schematic diagram of the present utility model;

Fig. 7 is structural representation of the present utility model.

Embodiment

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Referring to Fig. 1 to Fig. 7, a kind of inside connections test and Loop test PCM equipment, be comprised of local side PCM equipment 1 and far-end PCM equipment 2; Wherein: described local side PCM equipment 1 is centralized configuration, sub-frame 11, power panel 12 and tributary card 13, consists of; Described sub-frame 11 is that 19 inches 6U are high, and power interface 111 is housed, and 2 power supply board slot positions, 14 bypass channel positions can be provided; Described power panel 12 is equipped with mains switch 121, power module 122; Described tributary card 13 has system board 131 and Wiring port plate 132; Described far-end PCM equipment 2 is case structure, cabinet 21 and system board 22, consists of; Described cabinet 21 is that 19 inches 1U are high, and described system board 22 has test module 221 and Wiring port plate 222.

Referring to Fig. 4 and Fig. 5, some slots, phone module 6, ethernet module 3, Tester of Inner Line 5, Tester of Outer Line 4 and remote monitoring module are installed on local side PCM equipment 1 and far-end PCM equipment 2 described testing hosts and form.

Referring to Fig. 4, on the described Wiring port plate of local side PCM equipment 1, user interface 133, transmission link interface 134 are installed.

Referring to Fig. 6, respectively there is an earth terminal 7 at the Wiring port plate two ends of described far-end PCM equipment, and remote subscriber interface 8, power interface 9, mains switch 31 and far-end transmission link interface 32 also are installed on its system board.

Described transmission link interface can be monochromatic light mouth, Shuan Guangkou, single electricity port, two electricity mouth or light one electrical interface.

The connector of described user interface can adopt the RJ45 socket, and described RJ45 socket can directly connect RJ11 or RJ45 connector, or realizes patching of DB9, DB25, DB62 and M34 style connector by conversion cable.

Embodiment mono-:

Described local side PCM equipment 1 is ZMUX-6600, and far-end PCM equipment 2 is ZMUX-6636E, and adopting the 2M cable is transmission line;

1 overall dimension

1.1 local side PCM equipment 1 adopts 19 inches standard PC cases 21, size: 300mm (deeply) * 480mm (wide) * 260mm (height) architectural feature; Far-end PCM equipment 2 adopts 19 inches standard PC cases 21, size: 260mm (deeply) * 482mm (wide) * 44mm (height) architectural feature;

1.2 the case structure that local side PCM equipment 1 is the 6U height, be comprised of sub-frame 11, power panel 12 and business board, can be installed on 19 inches full open frames.The case structure that far-end PCM equipment 2 is 1U height, be comprised of cabinet 21 and turntable, can be installed on 19 inches full open frames, also can be used as that desktop device is positioned over steadily, dry, safe place use.

1.3 a M6630E business board is arranged in the sub-frame 11 of local side PCM equipment 1, provide 1-29 phone module slot, 1 RS485 remote monitoring module slot, 1 Tester of Inner Line slot, 1 Tester of Outer Line, 1 N*64k ethernet module slot.A mainboard is arranged in the cabinet 21 of far-end PCM equipment 2, the above is equipped with 30 slots, the 1-29 slot is the phone module slot, the RJ45 socket that corresponding device back lettering is 1～29, the M34-M37 slot is for packing the N*64K ethernet module into, the RJ45 socket that corresponding device back lettering is LAN1-LAN4.

1.4 respectively there is an earth terminal far-end PCM equipment 2 left and right, back, for equipment is connected with the system chassis grounding system.

1.5 the user interface connector is the RJ45 socket, can directly connect RJ11, RJ45 connector, also can realize DB9, DB25, DB62, M34(F by conversion cable) etc. the patching of connector of type.

2 operational environments

Working temperature: 0 ℃～40 ℃;

Relative humidity :≤90%(25 ℃);

3 working powers

Input voltage :-48V;

Permission voltage fluctuation :-36V～-72V;

4 LI(link interface)s

A) bit rate: 2048Kbps ± 50ppm;

B) pattern: HDB3;

C) interface impedance: 75 Ω are non-equilibrium or select 120 Ω balances;

D) connector: CC4 or select RJ45;

5 user interfaces

5.1 user and loop interface

A) impedance: 200 Ω+680 Ω || 0.1 μ F;

B) insertion loss :-3 ± 0.75dB;

C) frequency characteristic: 300～3400Hz (0.6～+ 3dB);

D) weighted noise :≤-63.7dBmop;

E) crosstalk attenuation: >=65dB;

F) loop resistance: >=1800 Ω;

5.2 10Base_T interface

A) interface type: 10Base-T;

B) interface rate: 10Mbps;

C) transmission rate: Nx64Kb/s(N=1～30);

D) agreement: link layer bridge joint;

Application principle:

Described local side PCM equipment ZMUX-6600 utilizes it to grab line circuit with far-end PCM equipment ZMUX-6636E voice channel to be measured is connected with Tester of Inner Line, Tester of Inner Line, by sending test massage and receiving the test signal that send opposite end, carries out functional test and fault detect to this voice channel.Far-end PCM equipment ZMUX-6636E utilizes it to grab line circuit user outline to be measured to be connected with Tester of Outer Line, by Tester of Outer Line, user outline to be tested and fault location.

Internal Line Test is as follows:

Described local side PCM equipment ZMUX-6600 and far-end PCM equipment ZMUX-6636E detect the busy-idle condition of voice channel to be tested, if in the engaged line state, stop test, if idle, carry out following testing procedure;

Whether the Tester of Inner Line of described far-end PCM equipment ZMUX-6636E sends off hook signal to local side, by the Tester of Inner Line of local side PCM equipment ZMUX-6600, this signal is detected, normal to judge handoff functionality;

Whether the Tester of Inner Line of described local side PCM equipment ZMUX-6600 sends ringing signal to far-end, by the Tester of Inner Line of far point PCM equipment ZMUX-6636E, this signal is detected, normal to judge ringer function;

Whether the Tester of Inner Line of described far-end PCM equipment ZMUX-6636E sends audio signal to local side, by the Tester of Inner Line of local side PCM equipment ZMUX-6600, this signal is detected, normal to judge audio frequency transmission function;

Whether the Tester of Inner Line of described local side PCM equipment ZMUX-6600 sends audio signal to far-end, by the Tester of Inner Line of far point PCM equipment ZMUX-6636E, this signal is detected, normal to judge audio frequency transmission function;

Loop test is as follows:

Described far-end PCM equipment ZMUX-6636E utilizes it to grab line circuit user outline to be measured is connected with Tester of Outer Line, by Tester of Outer Line, user outline is carried out to various line parameter circuit value tests, the parameter current recorded is through comparing with family of power and influence's value of empirical parameter and default, do thus the judgement of being out of order, the content of line parameter circuit value test comprises:

1, alternating voltage between A line alternating voltage, B line alternating voltage, A, B line;

2, direct voltage between A line direct voltage, B line direct voltage, A, B line;

3, impedance between A line earth impedance, B line earth impedance, A, B line;

4, A line direct-to-ground capacitance, B line direct-to-ground capacitance, A, B line capacitance;

By above-mentioned test parameter can be out of order the judgement as follows:

1, Intra-Office Line Cut;

2, Inter-Office Line Cut (breakpoint distance);

3, certainly mixed;

4, it is mixed;

5, high pressure.

Embodiment bis-:

Described local side PCM equipment is ZMUX-6600, and far-end PCM equipment is ZMUX-6636S, and employing optical fiber is transmission line;

1 overall dimension

1.1 local side PCM equipment adopts 19 inches standard PC cases 21, size: 300mm (deeply) * 480mm (wide) * 260mm (height) architectural feature; Far-end PCM equipment adopts 19 inches standard PC cases 21, size: 260mm (deeply) * 482mm (wide) * 44mm (height) architectural feature;

1.2 the case structure that local side PCM equipment is the 6U height, be comprised of sub-frame 11, power panel 12 and business board, can be installed on 19 inches full open frames.The case structure that far-end PCM equipment is 1U height, be comprised of cabinet 21 and turntable, can be installed on 19 inches full open frames, also can be used as that desktop device is positioned over steadily, dry, safe place use.

1.3 a M6630S business board is arranged in the sub-frame 11 of local side PCM equipment, provide 1-29 phone module slot, 1 RS485 remote monitoring module slot, 1 Tester of Inner Line slot, 1 Tester of Outer Line, 1 10M ethernet module slot.A mainboard is arranged in the cabinet 21 of far-end PCM equipment, the above is equipped with 30 slots, and the 1-29 slot is the phone module slot, the RJ45 socket that corresponding device back lettering is 1～29, the M34 slot is for packing the 10M ethernet module into, the RJ45 socket that corresponding device back lettering is LAN1.

1.4 respectively there is an earth terminal left and right, far-end PCM equipment back, for equipment is connected with the system chassis grounding system.

1.4 the user interface connector is the RJ45 socket, can directly connect RJ11, RJ45 connector, also can realize DB9, DB25, DB62, M34(F by conversion cable) etc. the patching of connector of type.

2 operational environments

Working temperature: 0 ℃～40 ℃;

Relative humidity :≤90%(25 ℃);

3 working powers

Input voltage :-48V;

Permission voltage fluctuation :-36V～-72V;

4 technical indicators

4.1 LI(link interface)

A) bit rate: 16.384Mb/s ± 50ppm;

B) pattern: NRZ+ scrambler;

C) transmitting optical power: >-the long distance of 5dB() or-the 12dB(short distance);

D) receiving sensitivity: >-36dB;

E) connector: FC (can match SC connector or single fiber optical interface);

4.2 user interface

4.2.1 user and loop interface

A) impedance: 200 Ω+680 Ω || 0.1 μ F;

B) insertion loss :-3 ± 0.75dB;

C) frequency characteristic: 300～3400Hz (0.6～+ 3dB);

D) weighted noise :≤-63.7dBmop;

E) crosstalk attenuation: >=65dB;

F) loop resistance: >=1800 Ω;

4.2.2 10Base_T interface

A) interface type: 10Base-T;

B) interface rate: 10Mbps;

C) transmission rate: Nx64Kb/s(N=1～30);

D) agreement: link layer bridge joint.

Application principle:

Described local side PCM equipment ZMUX-6600 utilizes it to grab line circuit with far-end PCM equipment ZMUX-6636S voice channel to be measured is connected with Tester of Inner Line, Tester of Inner Line, by sending test massage and receiving the test signal that send opposite end, carries out functional test and fault detect to this voice channel.Far-end PCM equipment ZMUX-6636S utilizes it to grab line circuit user outline to be measured to be connected with Tester of Outer Line, by Tester of Outer Line, user outline to be tested and fault location.

Internal Line Test is as follows:

Described local side PCM equipment ZMUX-6600 and far-end PCM equipment ZMUX-6636S detect the busy-idle condition of voice channel to be tested, if in the engaged line state, stop test, if idle, carry out following testing procedure;

Whether the Tester of Inner Line of described far-end PCM equipment ZMUX-6636S sends off hook signal to local side, by the Tester of Inner Line of local side PCM equipment ZMUX-6600, this signal is detected, normal to judge handoff functionality;

Whether the Tester of Inner Line of described local side PCM equipment ZMUX-6600 sends ringing signal to far-end, by the Tester of Inner Line of far point PCM equipment ZMUX-6636S, this signal is detected, normal to judge ringer function;

Whether the Tester of Inner Line of described far-end PCM equipment ZMUX-6636S sends audio signal to local side, by the Tester of Inner Line of local side PCM equipment ZMUX-6600, this signal is detected, normal to judge audio frequency transmission function;

Whether the Tester of Inner Line of described local side PCM equipment ZMUX-6600 sends audio signal to far-end, by the Tester of Inner Line of far point PCM equipment ZMUX-6636S, this signal is detected, normal to judge audio frequency transmission function;

Loop test is as follows:

Described far-end PCM equipment ZMUX-6636S utilizes it to grab line circuit user outline to be measured is connected with Tester of Outer Line, by Tester of Outer Line, user outline is carried out to various line parameter circuit value tests, the parameter current recorded is through comparing with family of power and influence's value of empirical parameter and default, do thus the judgement of being out of order, the content of line parameter circuit value test comprises:

1, alternating voltage between A line alternating voltage, B line alternating voltage, A, B line;

2, direct voltage between A line direct voltage, B line direct voltage, A, B line;

3, impedance between A line earth impedance, B line earth impedance, A, B line;

4, A line direct-to-ground capacitance, B line direct-to-ground capacitance, A, B line capacitance;

By above-mentioned test parameter can be out of order the judgement as follows:

1, Intra-Office Line Cut;

2, Inter-Office Line Cut (breakpoint distance);

3, certainly mixed;

4, it is mixed;

5, high pressure.

In sum; after those of ordinary skill in the art reads the utility model file; make other various corresponding conversion scheme according to the technical solution of the utility model and technical conceive without creative mental labour, all belong to the scope that the utility model is protected.

Claims (8)

1. an inside connections is tested and Loop test PCM equipment, local side PCM equipment and far-end PCM equipment, consists of; It is characterized in that: described local side PCM equipment is centralized configuration, sub-frame, power panel and tributary card, consists of; Described sub-frame is equipped with power interface, and several power supply board slot positions, several branch road board slot positions can be provided; Described power panel is equipped with mains switch, power module; Described tributary card by system, control circuit, grab line circuit, LI(link interface), functional module slot and Wiring port and form; Functional module slot can pack into some phone modules, ethernet module, Tester of Inner Line; Described far-end PCM equipment is case structure, cabinet and circuit board, consists of; Respectively there is an earth terminal at described cabinet two ends; Described circuit board by system board and on control circuit, grab line circuit, function slot, power interface, mains switch and Wiring port and form; Described function slot can be installed some phone modules, ethernet module, Tester of Inner Line, Tester of Outer Line and remote monitoring module.

2. a kind of inside connections test according to claim 1 and Loop test PCM equipment, it is characterized in that: the described sub-frame of local side PCM equipment is 19 inches casings that 6U is high.

3. a kind of inside connections test according to claim 1 and Loop test PCM equipment, it is characterized in that: the described cabinet of far-end PCM equipment is 19 inches casings that 1U is high.

4. a kind of inside connections test according to claim 1 and Loop test PCM equipment is characterized in that: on the system board of the tributary card of described local side PCM equipment and far-end PCM equipment, system, control circuit is installed, grabs line circuit, some function slots; Described slot can pack into some phone modules, ethernet module, Tester of Inner Line, Tester of Outer Line and remote monitoring module.

5. a kind of inside connections test according to claim 1 and Loop test PCM equipment, is characterized in that: local side user interface, local side transmission link interface are installed on the tributary card of described local side PCM equipment.

6. a kind of inside connections test according to claim 1 and Loop test PCM equipment, it is characterized in that: respectively there is an earth terminal at the cabinet two ends of described far-end PCM equipment, and remote subscriber interface, power interface, mains switch and far-end transmission link interface also are installed on its system board.

?

7. according to the described a kind of inside connections test of claim 5 or 6 and Loop test PCM equipment, it is characterized in that: described transmission link interface can be monochromatic light mouth, Shuan Guangkou, single electricity port, two electricity mouth or light one electrical interface.

8. according to the described a kind of inside connections test of claim 5 or 6 and Loop test PCM equipment, it is characterized in that: the connector of described user interface can adopt the RJ45 socket, described RJ45 socket can directly connect RJ11 or RJ45 connector, or realizes patching of DB9, DB25, DB62 and M34 style connector by conversion cable.

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