CN1996772A - A device and method for the E1/T1 interface backup - Google Patents
A device and method for the E1/T1 interface backup Download PDFInfo
- Publication number
- CN1996772A CN1996772A CNA2006101033703A CN200610103370A CN1996772A CN 1996772 A CN1996772 A CN 1996772A CN A2006101033703 A CNA2006101033703 A CN A2006101033703A CN 200610103370 A CN200610103370 A CN 200610103370A CN 1996772 A CN1996772 A CN 1996772A
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- interface
- relay
- single plate
- veneer
- circuit
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
Abstract
This invention provides one device and method to realize E1 and T1 interface backup, which can realize same function of the interface signal board and backup board, wherein, the main interface board and backup one front insert board adopts Y type of cable for wire connection with outer E1 or T1 composed of relay; when the main interface board or backup is false or damaged, it selects proper main interface signal board or backup interface single board through relay to realize circuit connection.
Description
Technical field
The present invention relates to the communications field, especially relate to a kind of Apparatus and method for that backs up by the E1/T1 Interface that adopts relay and Y type cable connection mode to realize.
Background technology
E1 (PCM30, nominal rate 2048kbit/s)/T1 (PCM24, nominal rate 1544kbit/s) interface is the common interface type of the network equipment as international standard.
Existing a kind of comparatively ancient outlet method, its basic design philosophy is: the subrack design of inserting before being applicable to, the numeral of E1/T1 Interface and simulation part all are integrated on the veneer, veneer itself does not possess interface, interface is positioned on the backboard, adopt the backboard outlet method of Sub-miniature B mode, general new product no longer adopts.
Its shortcoming is:
1, can't intensive outlet;
2, analog-and digital-part is not separated;
3, do not support the interface backup of E1/T1.
The another kind of outlet method that comparatively generally adopts, its basic design philosophy is: the numeral of E1/T1 Interface and simulation part all are integrated on the veneer, panel of the board possesses interface, outlet method is a lot, can adopt the panel outlet method of Sub-miniature B mode, also can adopt the panel outlet method of interface modes such as DB100, DB50, DB25, insert before being applicable to or design that machine frame is inserted in front and back.
Its shortcoming is:
1, analog-and digital-part is not separated;
2, need realize backup by software mode, system architecture is very complicated, the waste transfer resource, and the speed of switching is slow;
3, hardware is not supported the E1/T1 Interface backup;
4, each veneer is all wanted outlet, increases the quantity of cable.
Information according to Market Feedback, E1/T1 Interface damages and belongs to one of ratio soprano in the single board default, because E1/T1 Interface damages, not only need to spend a large amount of maintenance costs, even bring great accident may for office side, if veneer damages, general processing method is to change plate, must influence the E1/T1 cable of having tied up but change plate, all be worthless from the angle of engineering and reliability.
Because the technology particularity of E1/T1 Interface, backup is a difficult problem always.Network ground bit significance based on interface board, simultaneously in order to satisfy the requirement of low-cost and reliability, the E1/T1 Interface veneer need adopt the mode that backups each other between plate, in case the E1/T1 Interface of certain piece interface single plate damages or single board default, need not change under the prerequisite of distribution in assurance, system can veneer is all the E1/T1 Interface auto switching to adjacent spare interface veneer, strengthen the reliability of E1/T1 Interface, the stability of elevator system.
Application for a patent for invention (application number: 200410007592.6) disclose a kind of E1/T1 Interface that adopts relay to realize backup, when the master damages with front card, by the automatic switchover of relay, standby front card can be devoted oneself to work automatically, has strengthened the reliability of E1/T1 Interface.
But the cable splice mode of primary, spare front card and outside E1/T1 Interface circuit is not provided in the above-mentioned patent application, and the stand-by circuit part can not provide the loopback passage in obsolete process simultaneously, can't carry out the test of stand-by circuit.
Summary of the invention
The problem to be solved in the present invention provides a kind of Apparatus and method for of realizing the E1/T1 Interface backup, by adopting relay and Y type cable connection mode to realize the hardware backup of E1/T1 Interface, to overcome the cable splice mode that primary, spare front card and outside E1/T1 Interface circuit are not provided in the prior art, the stand-by circuit part can not provide the defective of loopback passage in obsolete process simultaneously, thereby has improved the stability of system.
For realizing purpose of the present invention, the invention provides a kind of equipment of realizing the E1/T1 Interface backup, comprising: main with interface single plate and spare interface veneer;
Described main preceding slotting panel with interface single plate and spare interface veneer adopts Y type cable enforcement distribution to be connected, and this Y type cable is connected with outside E1/T1 Interface circuit;
Described master comprises relay with interface single plate and spare interface veneer, optionally the master of current operate as normal is connected with the inside E1/T1 circuit and the described outside E1/T1 Interface circuit of interface single plate or spare interface veneer by relay.
Described relay comprises solid-state relay or time pulse relay.
Equipment of the present invention also comprises: driver, it transmits control signal to described relay and realizes optionally the master of current operate as normal being connected with the inside E1/T1 circuit and the described outside E1/T1 Interface circuit of interface single plate or spare interface veneer by relay.
Described driver comprises: triode, metal-oxide-semiconductor or Darlington transistor.
Current idle master is provided with the inside E1/T1 circuit of interface single plate or the spare interface veneer distribution by described relay and constitutes the loopback passage.
The present invention also provides a kind of method that realizes the E1/T1 Interface backup, comprises the steps:
(A) setting can realize identical function, active and standby master with relation uses interface single plate and spare interface veneer each other, described main preceding slotting panel with interface single plate, spare interface veneer adopts Y type cable to implement the distribution connection, this Y type cable is connected with outside E1/T1 Interface circuit, and described master comprises relay with interface single plate, spare interface veneer;
(B) when the master breaks down with interface single plate or spare interface veneer or damages, optionally the master of current operate as normal is connected with the inside E1/T1 circuit and the described outside E1/T1 Interface circuit of interface single plate or spare interface veneer by relay.
Describedly optionally the master of current operate as normal is connected by driver to the relay realization that transmits control signal with the inside E1/T1 circuit of interface single plate or spare interface veneer and described outside E1/T1 Interface circuit by relay.
Method of the present invention also comprises: the distribution setting by described relay makes current idle master constitute the loopback passage with the inside E1/T1 circuit of interface single plate or spare interface veneer.
Implement the present invention, the beneficial effect that brings is:
1. the sending and receiving end all is provided with relay in the primary, spare interface single plate, transformers connected in parallel and influence the receiving ability of E1/T1 signal in the E1/T1 Interface module when avoiding receiving the E1/T1 signal, E1/T1 port with primary, spare interface single plate in the time of simultaneously can avoiding being struck by lightning breaks simultaneously, anti-thunderbolt performance improves greatly, avoid major accidents such as paralysed machine, reduced maintenance cost;
2. the invention provides spare interface veneer loop fuction, improved the veneer testability;
3. adopt Y type cable outlet, save transfer resource, cut operating costs;
4. hardware is switched, and speed is fast, guarantees the service disconnection minimum.
Description of drawings
Fig. 1 is a schematic diagram of the present invention;
Fig. 2 is the flow chart that the present invention realizes the method for E1/T1 Interface backup;
Fig. 3 is the principle assumption diagram of the solid-state relay that uses of the present invention;
Fig. 4 is the circuit connection diagram that the present invention adopts solid-state relay;
Fig. 5 is the principle assumption diagram of the time pulse relay that uses of the present invention;
Fig. 6 is the circuit connection diagram that the present invention adopts time pulse relay.
Embodiment
The present invention is divided into two parts according to the theory that modulus separates with E1/T1 Interface, wherein, inserts on the panel before numeral, active part are integrated in, and simulation, passive part then are integrated on the back card/back board, and preceding slotting panel and back card/back board constitute interface single plate jointly.
Fig. 1 is a schematic diagram of the present invention, as shown in Figure 1, be provided with a main interface single plate 1 and the spare interface veneer 2 used among the present invention, the circuit and the structure of primary, spare interface single plate are identical, can finish identical functions, in use can be active and standby each other with relation by corresponding setting, that is to say, arbitrary of two interface single plates can be as main usefulness, and another piece forms 1: 1 completely backup relation then as standby.Under the normal condition, main spare interface veneer 2 is not worked with interface single plate 1 work, when the master breaks down with interface single plate 1 or damages, by the switching of relay, replaces its work by spare interface veneer 2.
As shown in Figure 1, main, the preceding slotting panel of spare interface veneer adopts Y type cable to implement the distribution connection, the signal that is to say outside E1/T1 Interface circuit is imported the master simultaneously by preceding slotting panel, the relay J 1 of spare interface veneer, J3, main, have separately independently in the spare interface veneer, mutual impregnable transmission circuit, signal after interface single plate E1/T1 Interface resume module is by relay J 2, J4 exports outside E1/T1 Interface circuit, wherein TPSCTL is the control signal of relay, by driver output, the contact switch of control relay or selection contacting.Realization thought of the present invention is: have only the inside E1/T1 circuit of an interface single plate and outside E1/T1 Interface circuit to connect at synchronization, the spare interface veneer inside of access failure is provided with by the distribution between the relay and constitutes the loopback passage conveniently it is tested.
Circuit connects as shown in Figure 1, state when the state of the relay that shows among the figure is current interface single plate operate as normal, as can be seen, at this moment, mainly be in closure state with interface single plate 1 by control relay J1, J2 and make main inside E1/T1 circuit and the connection of outside E1/T1 Interface circuit with interface single plate 1; And spare interface veneer 2, the state that is in disconnection and inner connection by control relay disconnects the E1/T1 circuit of spare interface veneer 2 and outside E1/T1 Interface circuit, the loopback passage that makes its inner formation can be used for testing simultaneously; At this moment, have only the master can receive and send the E1/T1 signal with interface single plate 1.
In sum, as shown in Figure 2, the method for realization E1/T1 Interface backup of the present invention is:
Step (201), setting can realize identical function, active and standby master with relation uses interface single plate and spare interface veneer each other;
Wherein, the master adopts Y type cable to implement the distribution connection with the preceding slotting panel of interface single plate, spare interface veneer, and this Y type cable is connected with outside E1/T1 Interface circuit, and the master comprises relay with interface single plate, spare interface veneer.
Step (202), break down or when damaging with interface single plate or spare interface veneer when main, by relay optionally with the master of current operate as normal inside E1/T1 circuit and the connection of outside E1/T1 Interface circuit with interface single plate or spare interface veneer.
Among the present invention, use relay the on/off of inner E1/T1 circuit of primary, spare interface single plate and outside E1/T1 Interface circuit to be selected, be elaborated below in conjunction with specific embodiment concrete enforcement of the present invention when selecting different relay as selector switch:
Select solid-state relay to realize backup:
The theory structure of the solid-state relay that uses among the present invention during work, adds certain control signal at A end as shown in Figure 3, and promptly may command B and C termination are logical or B is logical with the D termination, and during operate as normal, the control signal that the A end is imported is led to B and C termination.
Consult Fig. 4, be the circuit connection diagram that adopts above-mentioned solid-state relay, primary, spare interface single plate needs 4 relays altogether.
During operate as normal, as shown in Figure 4, B1 among relay J 1, the J2 and C1 end, B2 and C2 end are connected respectively, and D1 and D2 termination are logical; B3 among relay J 3, the J4 and D3 end, B4 and D4 end are connected respectively, and D3 and D4 termination are logical; At this moment, main be in connected state with interface single plate 1, spare interface veneer 2 is in off-state, and the inside E1/T1 circuit of spare interface veneer 2 formed the loopback passage, can carry out the test of circuit.
When the master breaks down with interface single plate 1 or damages, by control signal control relay switching state, switch to B1 and D1 end, B2 and D2 end among relay J 1, the J2 and connect respectively, D1 and D2 termination are logical; Switch to B3 and C3 end, B4 and C4 end among relay J 3, the J4 and connect respectively, D3 and D4 termination are logical; At this moment, spare interface veneer 2 is in on-state, main is in off-state with interface single plate 1, and main inside E1/T1 circuit with interface single plate 1 constituted the loopback passage, can lead the test and maintenance of usefulness interface single plate 1.
Wherein, the driver that is used for the control signal of control relay switching can be selected triode, also can select MOS (Metal-Oxide-Semiconductor, Metal-oxide-semicondutor) pipe, Darlington transistor etc., driving method and circuit design all have description in the prior art, no longer repeat at this.
In addition, the present invention also can use time pulse relay to realize the identical effect of above-mentioned solid-state relay realization backup, the theory structure of the time pulse relay that uses among the present invention as shown in Figure 5, when when A, B end adds the control signal of a direct impulse, can make C11 and D1 end, C12 and D2 termination logical; When A, B end adds the control signal of a reverse impulse, can make C21 and D1 end, C22 and D2 termination logical.
Consult Fig. 6, be the circuit connection diagram that adopts above-mentioned time pulse relay, primary, spare interface single plate needs 2 relays altogether.
During operate as normal, as shown in Figure 6, D11 in the relay J 1 and C111 end, D21 and C121 end are connected respectively, and C211 and C221 termination are logical; D12 and C212 end, D22 and C222 end are connected respectively in the relay J 2, and C212 and C222 termination are logical; At this moment, main be in connected state with interface single plate 1, spare interface veneer 2 is in off-state, and the inside E1/T1 circuit of spare interface veneer 2 constituted the loopback passage, can carry out the test of circuit.
When the master broke down with interface single plate 1 or damages, by control signal control relay switching state, D11 in the relay J 1 and C211 end, D21 and C221 end were connected respectively, and C211 and C221 termination are logical; D12 and C112 end, D22 and C122 end are connected respectively in the relay J 2, and C212 and C222 termination are logical; At this moment, spare interface veneer 2 is in on-state, main is in off-state with interface single plate 1, and main inside E1/T1 circuit with interface single plate 1 constituted the loopback passage, can lead the test and maintenance of usefulness interface single plate 1.
Wherein, the driver that is used for the control signal of control relay switching can be selected triode, also can select metal-oxide-semiconductor, Darlington transistor etc., and driving method and circuit design all have description in the prior art, no longer repeat at this.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (8)
1. an equipment of realizing the E1/T1 Interface backup is characterized in that, comprising: main with interface single plate and spare interface veneer;
Described main preceding slotting panel with interface single plate and spare interface veneer adopts Y type cable enforcement distribution to be connected, and this Y type cable is connected with outside E1/T1 Interface circuit;
Described master comprises relay with interface single plate and spare interface veneer, optionally the master of current operate as normal is connected with the inside E1/T1 circuit and the described outside E1/T1 Interface circuit of interface single plate or spare interface veneer by relay.
2. the equipment of realization E1/T1 Interface backup as claimed in claim 1, it is characterized in that: described relay comprises solid-state relay or time pulse relay.
3. the equipment of realization E1/T1 Interface backup as claimed in claim 1, it is characterized in that, also comprise: driver, it transmits control signal to described relay and realizes optionally the master of current operate as normal being connected with the inside E1/T1 circuit and the described outside E1/T1 Interface circuit of interface single plate or spare interface veneer by relay.
4. the equipment of realization E1/T1 Interface backup as claimed in claim 3 is characterized in that described driver comprises: triode, metal-oxide-semiconductor or Darlington transistor.
5. the equipment of realization E1/T1 Interface as claimed in claim 1 backup is characterized in that: current idle master is provided with the inside E1/T1 circuit of interface single plate or the spare interface veneer distribution by described relay and constitutes the loopback passage.
6. a method that realizes the E1/T1 Interface backup is characterized in that, comprises the steps:
(A) setting can realize identical function, active and standby master with relation uses interface single plate and spare interface veneer each other, described main preceding slotting panel with interface single plate, spare interface veneer adopts Y type cable to implement the distribution connection, this Y type cable is connected with outside E1/T1 Interface circuit, and described master comprises relay with interface single plate, spare interface veneer;
(B) when the master breaks down with interface single plate or spare interface veneer or damages, optionally the master of current operate as normal is connected with the inside E1/T1 circuit and the described outside E1/T1 Interface circuit of interface single plate or spare interface veneer by relay.
7. the method for realization E1/T1 Interface as claimed in claim 6 backup is characterized in that: described by relay optionally with the master of current operate as normal with the inside E1/T1 circuit of interface single plate or spare interface veneer and described outside E1/T1 Interface circuit connection by driver to the relay realization that transmits control signal.
8. the method for realization E1/T1 Interface backup as claimed in claim 6 is characterized in that, also comprises: the distribution setting by described relay makes current idle master constitute the loopback passage with the inside E1/T1 circuit of interface single plate or spare interface veneer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101033703A CN100479341C (en) | 2006-07-21 | 2006-07-21 | A device and method for the E1/T1 interface backup |
| PCT/CN2007/070338 WO2008011835A1 (en) | 2006-07-21 | 2007-07-20 | A device and method of implementing backup for e1/t1 interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101033703A CN100479341C (en) | 2006-07-21 | 2006-07-21 | A device and method for the E1/T1 interface backup |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1996772A true CN1996772A (en) | 2007-07-11 |
| CN100479341C CN100479341C (en) | 2009-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101033703A Active CN100479341C (en) | 2006-07-21 | 2006-07-21 | A device and method for the E1/T1 interface backup |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100479341C (en) |
| WO (1) | WO2008011835A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008011835A1 (en) * | 2006-07-21 | 2008-01-31 | Huawei Technologies Co., Ltd. | A device and method of implementing backup for e1/t1 interface |
| CN101146144B (en) * | 2007-10-11 | 2010-06-23 | 中兴通讯股份有限公司 | E1/T1 interface circuit and E1/T1 interface circuit device with master/slave structure |
| WO2011020331A1 (en) * | 2009-08-21 | 2011-02-24 | 中兴通讯股份有限公司 | Branch cable and device which uses the same |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6639894B1 (en) * | 2000-05-03 | 2003-10-28 | Metro-Optix, Inc. | Communications interconnect with make-before-break signal routing |
| CN100372251C (en) * | 2004-02-25 | 2008-02-27 | 华为技术有限公司 | E1/T1 interface for implementing backup through using relay |
| CN100356707C (en) * | 2004-11-16 | 2007-12-19 | 华为技术有限公司 | Single-chip protection switching device |
| CN100382452C (en) * | 2005-11-15 | 2008-04-16 | 中兴通讯股份有限公司 | Device and method for realizing ASC |
| CN100479341C (en) * | 2006-07-21 | 2009-04-15 | 华为技术有限公司 | A device and method for the E1/T1 interface backup |
-
2006
- 2006-07-21 CN CNB2006101033703A patent/CN100479341C/en active Active
-
2007
- 2007-07-20 WO PCT/CN2007/070338 patent/WO2008011835A1/en active Application Filing
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008011835A1 (en) * | 2006-07-21 | 2008-01-31 | Huawei Technologies Co., Ltd. | A device and method of implementing backup for e1/t1 interface |
| CN101146144B (en) * | 2007-10-11 | 2010-06-23 | 中兴通讯股份有限公司 | E1/T1 interface circuit and E1/T1 interface circuit device with master/slave structure |
| WO2011020331A1 (en) * | 2009-08-21 | 2011-02-24 | 中兴通讯股份有限公司 | Branch cable and device which uses the same |
| CN101997184A (en) * | 2009-08-21 | 2011-03-30 | 中兴通讯股份有限公司 | Branch cable and equipment employing same |
| CN101997184B (en) * | 2009-08-21 | 2013-06-05 | 中兴通讯股份有限公司 | Branch cable and equipment employing same |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008011835A1 (en) | 2008-01-31 |
| CN100479341C (en) | 2009-04-15 |
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