KR20010011316A - Apparatus for connecting subscriber line to redundant port in case of port failure - Google Patents

Abstract

PURPOSE: An apparatus for indirectly connecting subscribers is provided to indirectly connect a subscriber line, connected with a port of a port processor that the failures are occurred, with other port, so as to automatically connect the subscriber line to an idle port to quickly supply a service. CONSTITUTION: A hook state detector(104) detects a hook state of a subscriber line. A port state detector(112) detects states of port processors(108-1-108-30). If a failure is detected in a corresponding port of the hooked-off subscriber line, a controller(116) generates a switching control signal for detouring the subscriber line to an idle port which does not have a failure, according to port information received from the port state detector(112). A switching block(106) supplies a detouring path of the subscriber line having the port failure, according to a control signal of the controller(116).

Description

Apparatus for connecting subscriber line to redundant port in case of port failure}

The present invention relates to a channel matching part of a transmission device or a subscriber matching part of a switching device. More particularly, when a channel port for accommodating a subscriber fails, the device can continue to provide services by bypassing another channel port. It is about.

In case of a failure in any of the high speed multiplexing unit or the low speed multiplexing unit in which a plurality of lines are accommodated in the transmission apparatus, the transfer unit is switched to a spare board to prevent the plurality of lines from being interrupted. At this time, it operates 1: 1 switching or 1: N switching according to the importance of the board. Through this switching, the reliability of communication network can be shaped.

However, since the port processing part of the channel part does not normally operate the spare port, if one port fails in each port of the channel part, the subscriber line connected to the terminal of the corresponding port on the MDF should be replaced with the terminal of the other port. There was a problem that it is difficult to detect a port failure unless a failure state is detected or a subscriber does not report a telephone failure.

Accordingly, the present invention has been made in order to solve the above-mentioned conventional problems, the device for bypassing the subscriber in the event of a port failure that can be connected by bypassing the subscriber line connected to the corresponding port when a failure occurs in the port processing unit The purpose is to provide.

In order to achieve the above object, the apparatus of the present invention includes a port processing unit corresponding to a plurality of subscribers, the channel apparatus for digitally processing the analog signal of the subscriber, hook state detection unit for detecting the hook state of the subscriber line ; A port state detector for detecting a state of the port processor; Control unit for generating a switching control signal for bypassing an idle port that does not occur when a failure is detected in the corresponding port of the subscriber line hooked off according to the hook information received from the hook state detection unit and the port information received from the port state detection unit ; And a switching unit for providing a bypass path of a subscriber line having detected a port failure according to a control signal of the controller.

1 is a block diagram showing the configuration of an apparatus according to the present invention;

Figure 2 is an embodiment of the hook state detection unit shown in Figure 1,

3 is an embodiment of the switching unit illustrated in FIG. 1.

* Explanation of symbols for main parts of the drawings

102-1 to 102-30: subscriber telephone 104: hook state detection unit

106: switching unit 108-1 to 108-30: first to thirtieth port processing unit

110: multiplexing and frame processing unit 112: port state detection unit

114: talk sound generating unit 116: control unit

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a configuration of an apparatus according to the present invention, which shows a channel apparatus capable of accommodating 30 subscriber lines. In FIG. 1, the apparatus of the present invention includes the telephones 102-1 to 102-30 connected through a subscriber line, the hook state detector 104, the switching unit 106, and the first to thirtieth port processing units 108-1 to. 108-30), the multiplexing and frame processing unit 110, the port state detection unit 112, the busy sound generating unit 114, and the control unit 116 is formed by the PCM multiplexing of 30 channels subscribers to form an E1 frame The signal is transmitted to the multiplexer or the station, and the received signal is demultiplexed to the subscriber.

Referring to FIG. 1, the first to thirtieth port processing units 108-1 to 108-30 may include a combo chip, a LIU chip, a relay, a surge absorber, and the like. The PCM demodulates the data and reproduces the analog voice signal to the subscriber. The multiplexing and frame processing unit 110 multiplexes the PCM modulated digital signals of the port processing units 108-1 to 108-30 to form a predetermined E1 frame or demultiplexes the E1 frame received from a power station. 1-108-30). The port state detection unit 112 detects whether a failure of each port and a use state of the port is transmitted to the control unit 116.

The hook state detection unit 104 detects the hook on / off of the subscriber phones 102-1 to 102-30 through the subscriber line and provides the hook information to the control unit 116, and the ring tone generator 114 is a port. Busy tone is generated to indicate that all are in use and provided to the switching unit 106. The switching unit 106 provides a detour route for the subscriber line according to the control signal of the controller 116, and transmits a call sound to the subscriber side when there is no detour route. The control unit 116 transmits a switching control signal for bypass and a control signal for transmitting a busy sound according to the hook information input from the hook state detection unit 104 and the port information input from the port state detection unit 112. To provide.

FIG. 2 is an embodiment of the hook state detector shown in FIG. 1 and may easily detect a hook state of a subscriber telephone through an optical relay OR. That is, -48V provided by the network is applied to the subscriber line. When the subscriber telephone is hooked off, a closed loop of 600 ohm impedance is formed. Convert to "0". Therefore, the controller 116 may receive the hook information and determine the hook state of each subscriber.

3 is an embodiment of the switching unit illustrated in FIG. 1, and the switching unit 106 may be easily implemented by a plurality of relays R1, R2, R3. Each relay switches the direction of the contact point according to the control signal of the controller 106 to connect the subscriber line hooked off to any one of the first to thirty port processing units.

Next, the operation of the present invention configured as described above will be described in detail with reference to specific embodiments.

First, it is assumed that the state of the port detected by the port state detection unit 112 is shown in Table 1 below.

Port number condition Port number condition Port number condition One Normal / in use 11 Normal / unused 21 Normal / in use 2 broken 12 Normal / in use 22 Normal / unused 3 broken 13 Normal / in use 23 Normal / unused 4 Normal / in use 14 Normal / unused 24 Normal / in use 5 Normal / in use 15 broken 25 Normal / in use 6 Normal / unused 16 broken 26 Normal / unused 7 Normal / unused 17 Normal / in use 27 Normal / in use 8 Normal / in use 18 Normal / unused 28 broken 9 Normal / unused 19 Normal / in use 29 broken 10 Normal / in use 20 Normal / unused 30 Normal / unused

As shown in Table 1, it is assumed that a failure occurs in the second, third, third, fifteen, sixteen, twenty-eighth, thirty-nine ports in thirty channel ports, and the remaining twenty-four ports are normal. And the normal port use status is 1, 4, 5, 8, 10, 21, 24, 25, 27 port 6, 7, 9, 11, 14, 18, 20, 22 as shown in Table 1. Suppose ports 23, 26 and 30 are not in use.

In addition, it is assumed that the hook state of each subscriber line is shown in Table 2 below.

Subscriber number Hook status Subscriber number Hook status Subscriber number Hook status One off 11 On 21 off 2 On 12 On 22 On 3 On 13 On 23 On 4 off 14 On 24 off 5 off 15 On 25 off 6 On 16 On 26 On 7 On 17 On 27 off 8 off 18 On 28 On 9 On 19 On 29 On 10 off 20 On 30 On

In the hook state of each subscriber line, "on" is a hook-on state without using a channel, and "off" is a hook-off state using a channel.

In Table 1 and Table 2, it can be seen that ports 1, 4, 5, 8, 10, 21, 24, 25, and 27 are normally used, and in this state, the telephone of subscriber 3 is hooked off. If you want to use a port, it works as follows.

The control unit 116 stores the operation states as shown in Tables 1 and 2 above. When the hook-off of the third subscriber is received from the hook state detection unit 104, the port 3 is broken, and thus, the switching unit 106 is used. The bypass route should be indicated. At this time, since the ports which are not in use among the normal ports are ports 6, 7, 9, 11, 14, 18, 20, 22, 23, 26, and 30, a control signal is provided to the switching unit 106 so as to connect to any one of them. . For example, when instructing the switching unit 106 to connect to the sixth port, the switching unit 106 operates a relay to connect the third subscriber line 102-3 to the sixth port processing unit 108-6 to operate the channel. To use. At this time, if there is no idle port, the busy tone input from the busy tone generator 114 is transmitted to the corresponding subscriber line according to the control signal of the controller 116.

As described above, when the device of the present invention is applied, the port processing unit does not need to move the subscriber line connected to the failed port to another port, and also automatically connects to an idle port instead of in service, thereby providing the service quickly. can do.

Claims (2)

In the channel apparatus for digitally processing the analog signal of the subscriber having a port processing unit corresponding to a plurality of subscribers, A hook state detector for detecting a hook state of a subscriber line; A port state detector for detecting a state of the port processor; Control unit for generating a switching control signal for bypassing an idle port that does not occur when a failure is detected in the corresponding port of the subscriber line hooked off according to the hook information received from the hook state detection unit and the port information received from the port state detection unit ; And And a switching unit for providing a bypass path of a subscriber line having detected a port failure according to a control signal of the controller. The method of claim 1, wherein the apparatus further comprises a call sound generating unit for generating a call sound, when the bypass path cannot be provided, the call sound can be transmitted to the subscriber through the switching unit under the control of the controller. Apparatus for bypassing the subscriber in case of port failure.