CN2879560Y

CN2879560Y - Telephone connection panel with bidirectional high-frequency close function

Info

Publication number: CN2879560Y
Application number: CN 200620071080
Authority: CN
Inventors: 杨春泽
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-04-10
Filing date: 2006-04-10
Publication date: 2007-03-14
Anticipated expiration: 2016-04-10

Abstract

The utility model discloses a telephone connection panel with bidirectional high-frequency close function which includes PSTN signal socket, ADSL signal socket, and bidirectional high frequency cutoff unit, the total signal mixed by external net high frequency signal and telephone low frequency signal is respectively connected to a terminal of the ADSL signal socket and an input terminal of the bidirectional high frequency cutoff unit, and an output terminal of the bidirectional high frequency cutoff unit is connected to a terminal of the PSTN signal socket, the total signal can be firstly connected to parallel connection terminal and then connected to the ADSL signal socket and the bidirectional high frequency cutoff unit. The utility model can eliminate the interference to the telephone communication caused by the high frequency signal after wide-band modulator demodulator (xDSL modem) having been turned on, can also eliminate the interference to normal going online caused by high frequency signal component generated at the time when the telephone is in using.

Description

Telephone connection panel with two-way high-frequency cut-off function

One, technical field

The present invention relates to a kind of telephone connection panel, thereby relate in particular to a kind of telephone connection panel that can eliminate the high-frequency signal interference by high-frequency signal.

Two, background technology

Use ADSL broadband access network technology in a large number among the domestic numerous fixed telephone subscribers at present, this technology does not need to rearrange line, only needs just can realize broadband access by the existing telephone line.In the domestic consumer, telecommunication department only needs be put into telephone wire cloth the junction box on user doorway, and house telephone circuit all is that the user is pre-buried when decorateing, and stays 3～4 plain old telephone patch panel usually, the telephone connection panel is provided with telephone line interface, is distributed in positions such as study, bedroom, parlor.As shown in Figure 1, in general, most of user is a telephone connection panel access band by the study, all the other interfaces still connect plain old telephone, it is indoor that the twisted-pair feeder of telecommunication department enters the user through user's a door cephalophragma box, and

telephone set

1,2,3 and the separator that is used for broadband access network are connected in parallel on junction box by the interface of telephone connection panel.When broadband modem (xDSL modem) when not opening, only there is telephone signal (low frequency signal) to be distributed on

phone

1,2,3 ports and the separator port by the phone panel interface; When broadband modem (xDSL modem) is opened, the composite resultant signal of high and low frequency signal is distributed on

telephone set

1,2,3 ports and the separator port simultaneously, resultant signal is separated into high frequency component signal and low-frequency signal components by separator, high frequency component signal converts high-frequency signal to digital signal and is sent to computer realization high speed Internet access through broadband modem (xDSLmodem); Low-frequency signal components is sent to telephone set 4, realizes conversation.But can cause following 2 kinds of consequences when any phone conversation that other 3 telephone connection panel interfaces are connected: (1) because the interference of high-frequency signal, and

phone

1,2,3 can't normal talking; (2) because

phone

1,2,3 all can cause the twisted-pair feeder power on signal to be undergone mutation when off-hook, on-hook, shake bell, more than 25khz, can produce a plurality of harmonic waves, these high-frequency harmonic components can influence the ADSL signal, and broadband access network is gone offline.

Three, summary of the invention

1, goal of the invention: the purpose of this utility model provides a kind ofly can be got rid of high-frequency signal dialogue machine conversation and produce and disturb and the telephone connection panel with two-way high-frequency cut-off function that high-frequency harmonic signal that phone produces when using disturbs network signal.

2, technical scheme: in order to reach above-mentioned goal of the invention, telephone connection panel with two-way high-frequency cut-off function of the present utility model comprises PSTN signal plug, ADSL signal plug and two-way high-frequency cut-off unit, the resultant signal that extraneous network high-frequency signal and phone low frequency signal mix is connected to the binding post of ADSL signal plug, import two-way high-frequency cut-off unit simultaneously, the output of two-way high-frequency cut-off unit is connected with the binding post of PSTN signal plug.

Resultant signal is connected to the back binding post of ADSL signal plug and the input of two-way high-frequency cut-off unit respectively after also can inserting binding post in parallel earlier again.

Two-way high-frequency cut-off unit with telephone connection panel of two-way high-frequency cut-off function of the present invention can obtain by buying, also can design voluntarily and its cut-off frequency can be provided with as required.Telephone connection panel panel itself with two-way high-frequency cut-off function of the present invention provides two kinds of sockets, and a kind of socket is that the ADSL signal plug is used to connect ADSL modem, and another kind of socket is that the pstn telephone socket is to be used to connect ordinary telephone set.After outside line resultant signal (comprising high-frequency data signal and low frequency voice signal) inserted panel, signal was divided into two-way, and one road signal does not need to do on the socket that any processing directly is connected to ADSL Mmodem correspondence; Another road signal is through being connected on the pairing socket of telephone set behind the two-way high-frequency cut-off unit filtering.

3, beneficial effect: advantage of the present invention is: both can remove broadband modem (xDSL modem) and open the interference of back high-frequency signal to the telephone set conversation, the high frequency component signal that produces in the time of also can removing the telephone set use is to the interference of normal online.

Four, description of drawings

Fig. 1 is existing broadband access system;

Fig. 2 is the telephone connection panel front figure with two-way high-frequency cut-off function;

Fig. 3 is the structure chart with telephone connection panel of two-way high-frequency cut-off function;

Fig. 4 is the circuit diagram of two-way high-frequency cut-off unit.

Five, embodiment

As Fig. 2, shown in Figure 3, the telephone connection panel 13 with two-way high-frequency cut-off function of present embodiment comprises two RJ11 type sockets, and one of them is an ADSL signal plug 11, and another is a PSTN signal plug 12.The resultant signal that extraneous network high-frequency signal and phone low frequency signal mix inserts entrance hole 2 by telephone box outside line 1 through patch panel, be divided into two paths of signals after linking binding post 4 in parallel by circuit 3 again, first via mixed signal is sent to the binding post 9 of ADSL signal plug 11 by circuit 7, and ADSL modem is connected with ADSL signal socket just can realize online; The second tunnel mixed signal is transferred to two-way high-frequency cut-off unit 6 by circuit 5, high frequency component signal in the mixed signal is blocked by high-frequency cut-off unit 6, remaining low-frequency signal components is transferred to the binding post 10 of PSTN signal plug 12 by via line 8, and telephone set just is connected with PSTN signal plug 12 can realize normal talking; When phone produces the high-frequency harmonic component during at off-hook, on-hook, shake bell,, and then influence the ADSL signal of surfing the Net because the blocking-up of two-way high-frequency cut-off unit 6 makes it can't enter binding post 4 in parallel.

As shown in Figure 4, two-way high-frequency cut-off unit 6 comprises transformer L1, transformer L2, capacitor C 1, capacitor C 2, capacitor C 3 and capacitor C 4, wherein, transformer L1 connects with transformer L2, capacitor C 3 is in parallel with the lateral coil L21 of transformer L2, capacitor C 4 is in parallel with the opposite side coil L22 of transformer L2, and capacitor C 1 is connected between two lateral coil L11, the L12 of transformer L1, and capacitor C 2 is connected between two lateral coil L21, the L22 of transformer L2.

Claims

1, a kind of telephone connection panel with two-way high-frequency cut-off function, comprise PSTN signal plug (12), it is characterized in that, also comprise ADSL signal plug (11) and two-way high-frequency cut-off unit (6), the resultant signal that extraneous network high-frequency signal and phone low frequency signal mix is connected to the binding post (9) of ADSL signal plug (11) and the input of two-way high-frequency cut-off unit (6) respectively, and the output of two-way high-frequency cut-off unit (6) is connected with the binding post (10) of PSTN signal plug (12).

2, the telephone connection panel with two-way high-frequency cut-off function as claimed in claim 1, it is characterized in that described resultant signal is connected to the binding post (9) of ADSL signal plug (11) and the input of two-way high-frequency cut-off unit (6) respectively after inserting binding post in parallel (4) again.