GB1598677A - Transportable signal conversion interface equipment - Google Patents

Transportable signal conversion interface equipment Download PDF

Info

Publication number
GB1598677A
GB1598677A GB2780377A GB2780377A GB1598677A GB 1598677 A GB1598677 A GB 1598677A GB 2780377 A GB2780377 A GB 2780377A GB 2780377 A GB2780377 A GB 2780377A GB 1598677 A GB1598677 A GB 1598677A
Authority
GB
United Kingdom
Prior art keywords
conversion
signalling
equipment
register
signal conversion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2780377A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Plessey Co Ltd
Original Assignee
Plessey Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB2780377A priority Critical patent/GB1598677A/en
Publication of GB1598677A publication Critical patent/GB1598677A/en
Priority to KE327483A priority patent/KE3274A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges

Description

(54) TRANSPORTABLE SIGNAL CONVERSION INTERFACE EQUIPMENT (71) We, THE PLESSEY COMPANY LIM ITEM, of Vicarage Lane, Ilford, Esses IGI 4AQ, a British Company, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: The present invention relates to transportable signal-conversion interface-equipmentfor use in a telecommunication switching network.
In particular the invention enables the expansion of existing telephone networks by the inclusion of exchanges which are normally incompatible in respect of the signalling types employed. Such network expansion employing this invention requires no modification to the existing exchanges in the network nor any provision at the new exchanges of special interworking equipment.
An aim of this invention is to provide a transportable signal-conversion interfaceequipment which provides flexibility as regards its signalling conversion and interfacing functions.
According to the present invention there is provided a transportable signal-conversion interface-equipment for use in a telecommunication switching network including exchanges employing differing line signalling and register signalling systems, the interfaceequipment including a plurality of junctor units each of which caters for conversion between two differing line signalling systems, a plurality of registers each of which caters for conversion between two differing interregister signalling systems and means whereby said junctors are separately connected in junctions or trunks interconnecting exchanges having differing line-signalling systems, wherein when any one of the junctions or trunks is in use, the associated junctor, appropriate for effecting line signalling conversion between the exchanges linked by the said one junction or trunk, takes into use one of said registers appropriate to the inter-register signalling system employed between the exchanges interconnected by the said one junction or trunk, the said associated junctor and the said one register enabling signalling to be effected between exchanges having differing linesignalling and register signalling systems respectively.
The units of hardware i.e. the junctors, registers, register access switches etc., of the signal conversion interface equipment, are detachably mounted (plug-in units) on racks and frames which are wired and interconnected in a standardised pattern which enables a range of different junctors -and registers to be interchanged as required. This offers flexibility for any interworking situation i.e. the appropriate junctors and registers are employed in accordance with the particular interworking signalling requirements.
In carrying out the invention registers provide conversion for inter-register signalling from loop-disconnect system to R2 system (C.C.I.T.T. M.F. register compelled); from R2 system to loop disconnect system; from R1. system (C.C.I.T.T. M.F. en-block pulsed) to R2 system and from R2 system to R1 system.
As regards line-signalling, the junctors cater for loop-disconnect system, and E and M system, using both continuous or pulsed signalling codes. Conversion from any one system of signalling to another being catered for as required. Two-wire and four-wire working is also catered for.
In practice the signal-conversion interfaceequipment is housed in a container which can be transported by means of its own wheel system, or if not fitted with wheels, can be transported by loading on a vehicle, for example, a flat tail-board lorry.
A container which is suitable and conveniently available is that of the type used for PENTEX (Registered Trade Mark) mobile container exchanges. This provides an eminently suitable standardised pattern of interconnections between the plug-in positions on the shelves of the racks to enable this invention to be put into effect.
Accordingly, the term transportable, used in relation to the signal-conversion interface equipment, should be interpreted in such manner that the signal-conversion interface equipment is regarded as a totally selfcontained and completed unit which is movable, as required, to an exchange site in the telephone network requiring interworking facilities. Further, it should be understood that the unit is connectable, by means of a cable, to the relevant exchange in the network whereupon the interworking facilities provided by the self-contained unit can be utilised.
By way of example one embodiment of the present invention will now be described with reference to the drawings accompanying the provisional specification in which, Fig. 1 Illustrates a transportable mobile container of the type employed for housing the signal conversion equipment of the present invention.
Fig. 2 Illustrates a floor plan of the interior of the container as illustrated in Fig. 1.
Fig. 3 Shows a schematic diagram indicating how the signal conversion equipment links an old or existing switching network with the equipment of a network expansion section.
Fig. 4 Shows in block schematic form the basic equipment requirements of the signal conversion equipment.
Fig. 5 Shows a further block schematic diagram which illustrates the signal conversion equipment, housed in a full container, and shows the equipment required for 300 + 300junctions or trunks with conversion in two directions i.e. from existing network to network expansion section and from network expansion section to existing network.
Referring to the drawings, Fig. 1 shows the wheeled mobile container which houses the signal conversion equipment. In the container are mounting racks which are standard wired and cabled for all facilities envisaged, and the racks accommodate plugin units which are provided on a siterequirement basis.
In Fig. 2 it can be seen how at one end of the container there is provided a main distribution frame (M.D.F.) and it is to this frame that all the junction or trunk connections are made. At the other end of the container a mains supply MS is provided together with a rectifier and a battery.
In the main body of the container is located the racks which contain the plug-in units in the form ofjunctors and registers. In this particular container there are 600 junctors and 64 registers catering for conversion of 300 junctions or trunks extending say from an exchange, in an existing switching network, employing loop disconnect (LD) system inter-register signalling and including several different systems of line signalling, to an exchange in a network expansion section employing R2 system signalling and including several different systems of line signalling, and then for conversion for 300 junctions or trunks extending from the R2 system exchange, to the LD system exchange.
Referring now to Fig. 3, in the existing network EN, there are three exchanges, El, E2 and E3 which are linked by junctions or trunks J 1 and J2. In this network the interregister signalling system are loop-disconnect (LD) and Rl. Exchange El is exclusively LD system, whereas, exchange E3 is exclusively RI system. Exchange E2 linking exchanges El and E3 accordingly caters for LD and RI systems.
In the network expansion section NES there are also three exchanges E4, E5 and E6 which are linked by junctions or trunks J9, J 10 and J II. In this network there is only only inter-register signalling system and that is R2. The inter-register signalling systems used over the junctions between exchanges are indicated in brackets.
Both the existing network EN and network expansion section NES also employ mixed line-signalling systems and to enable the two networks to inter-work, the signal conversion equipment SCE must be utilised as an interface between the two networks. In this simple example, the signal conversion equip ment is shown located between junction J3 and junctions J5 with J6, then between junction J4 and junctions J7 with J8. Thus, in the former case conversien, in respect of inter-register signalling, from systems LD to R2 and from systems R2 to LD can be achieved, whereas in the latter case conversion from systems Ri to R2 and from systems R2 to Rl can be achieved.
Usually the container containing the signal conversion equipment is transported to the site which is most convenient for connecting the conversion equipment into the junctions.
Referring now to Fig. 4, the basic signalling conversion equipment SCE comprises junctors JUNC which cater for differing linesignalling systems on the incoming IC and outgoing OG sides ofthejunction concerned.
This unit provides the appropriate conversion between the two systems of line signalling, and is provided as the junction linesignalling requirements demand.
Both sides of the junctors are connected to the M.D.F. in the container and it is at this point the junctions to be inter-worked are connected by means of a suitable cable.
Typically, the end of the junction incoming to the signalling conversion equipment SCE, from either the existing network EN or the network expansion section NES, is connected to the IC side of the MDF, while the end of the junction going to either the network expansion section NES or the existing network EN respectively is connected to the OG side of the MDF.
The junctors (as many as there are junctions to be inter-worked) have access to a common group of signalling conversion reg isters SCREG, by way of a register access switch RAS. Dialled or multi-frequency (MF) register signals are passed to these registers, where conversion is effected to the required signalling system, for re-transmission. Usually, the registers are arranged in groups of 16, each group serving 150 junctors.
150 junctors with 16 registers form a signal conversion group for one system of register signal conversion, however, different linesignalling system can be used within this group.
The type or signal conversion register in a group can be one of the following types: LD to R2 or RI to R2 or R2 to LD or R2 to Rl.
Referring now to Fig. 5 which shows the signal conversion equipment necessary for conversion of 600 junctions.
In particular two conversion groups are provided for conversion from systems LD to R2 in respect of the direction from the existing network EN to the network expansion section NES. This gives an availability of up to 300 junctors in this direction of conversion.
A further two conversion groups are provided for conversion from systems R2 to LD in respect of the direction from the network expansion section NES to the existing network EN. This gives an availability of up to a further 300 junctors in this direction of conversion. The equipment quantities are indicated in brackets.
The container contains maintenance and traffic monitoring facilities together with common services.
Although this invention has been described for conversion between particular line-signalling and inter-register signalling systems it need not be limited to these signalling systems. The signal-conversion interface-equipment can be used in any situation where conversion is required between other known signalling systems not mentioned, the particular conversion units being provided on a plug-in basis as site requirements demand.
WHAT WE CLAIM IS: 1. A transportable signal-conversion interface-equipment for use in a telecommunication switching network including exchanges employing differing line signalling and register signalling systems, the interfaceequipment including a plurality of junctor units each of which caters for conversion between two differing line signalling systems, a plurality of registers each of which caters for conversion between two differing interregister signalling systems and means whereby said junctors are separately connected in junctions or trunks interconnecting exchanges having differing line-signalling systems, wherein when any one of the junctions or trunks is in use, the associated junctor, appropriate for effecting line signalling conversion between the exchanges linked by the said one junction or trunk, takes into use one of said registers appropriate to the inter-register signalling system employed between the exchanges interconnected by the said one junction or trunk, the said associated junctor and the said one register enabling signalling to be effected between exchanges having differeing linesignalling and register signalling systems respectively.
2. A transportable signal conversion interface-equipment as claimed in claim 1 in which ajunctor is connected in eachjunction or trunk where conversion between one signalling system and another is required by means in the form of a cable connecting the junction or trunk to a main distribution frame (M.D.F.) forming part of the interface equipment.
3. A transportable signal conversion interface-equipment as claimed in claims 1 or 2 in which the units of hardware of the interface-equipment are detachably mounted on racks and frames which have their plug-in positions wired and interconnected in a standardised pattern.
4. A transportable signal conversion interface-equipment as claimed in claim 3 in which a first set of registers provide conversion for inter-register signalling from loop disconnect (LD) system to C.C.I.T.T. M.F.
register compelled (R2) system.
5. A transportable signal conversion interface-equipment as claimed in claim 4 in which a second set of registers provide conversion for inter-register signalling from C.C.I.T.T. M.F. register compelled (R2) system to loop disconnect (LD) system.
6. A transportable signal conversion interface-equipment as claimed in claim 3 in which a first set of registers provide conversion for inter-register signalling from C.C.l.T.T. M.F. en-block pulsed (Rl) system to C.C.I.T.T. M.F. register compelled (R2) system.
7. A transportable signal conversion interface-equipment as claimed in claim 6 in which a second set of registers provide conversion for inter-register signalling from C.C.I.T.T. M.F. register compelled (R2) system to C.C.I.T.T. M.F. en-bloc pulsed (Rl) system.
8. A transportable signal conversion interface-equipment as claimed in any preceding claim in which a junctor provides for conversion from line signalling of the loop disconnect (LD) system to E and M system (using continuous or pulsed signalling codes).
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (14)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    isters SCREG, by way of a register access switch RAS. Dialled or multi-frequency (MF) register signals are passed to these registers, where conversion is effected to the required signalling system, for re-transmission. Usually, the registers are arranged in groups of 16, each group serving 150 junctors.
    150 junctors with 16 registers form a signal conversion group for one system of register signal conversion, however, different linesignalling system can be used within this group.
    The type or signal conversion register in a group can be one of the following types: LD to R2 or RI to R2 or R2 to LD or R2 to Rl.
    Referring now to Fig. 5 which shows the signal conversion equipment necessary for conversion of 600 junctions.
    In particular two conversion groups are provided for conversion from systems LD to R2 in respect of the direction from the existing network EN to the network expansion section NES. This gives an availability of up to 300 junctors in this direction of conversion.
    A further two conversion groups are provided for conversion from systems R2 to LD in respect of the direction from the network expansion section NES to the existing network EN. This gives an availability of up to a further 300 junctors in this direction of conversion. The equipment quantities are indicated in brackets.
    The container contains maintenance and traffic monitoring facilities together with common services.
    Although this invention has been described for conversion between particular line-signalling and inter-register signalling systems it need not be limited to these signalling systems. The signal-conversion interface-equipment can be used in any situation where conversion is required between other known signalling systems not mentioned, the particular conversion units being provided on a plug-in basis as site requirements demand.
    WHAT WE CLAIM IS: 1. A transportable signal-conversion interface-equipment for use in a telecommunication switching network including exchanges employing differing line signalling and register signalling systems, the interfaceequipment including a plurality of junctor units each of which caters for conversion between two differing line signalling systems, a plurality of registers each of which caters for conversion between two differing interregister signalling systems and means whereby said junctors are separately connected in junctions or trunks interconnecting exchanges having differing line-signalling systems, wherein when any one of the junctions or trunks is in use, the associated junctor, appropriate for effecting line signalling conversion between the exchanges linked by the said one junction or trunk, takes into use one of said registers appropriate to the inter-register signalling system employed between the exchanges interconnected by the said one junction or trunk, the said associated junctor and the said one register enabling signalling to be effected between exchanges having differeing linesignalling and register signalling systems respectively.
  2. 2. A transportable signal conversion interface-equipment as claimed in claim 1 in which ajunctor is connected in eachjunction or trunk where conversion between one signalling system and another is required by means in the form of a cable connecting the junction or trunk to a main distribution frame (M.D.F.) forming part of the interface equipment.
  3. 3. A transportable signal conversion interface-equipment as claimed in claims 1 or 2 in which the units of hardware of the interface-equipment are detachably mounted on racks and frames which have their plug-in positions wired and interconnected in a standardised pattern.
  4. 4. A transportable signal conversion interface-equipment as claimed in claim 3 in which a first set of registers provide conversion for inter-register signalling from loop disconnect (LD) system to C.C.I.T.T. M.F.
    register compelled (R2) system.
  5. 5. A transportable signal conversion interface-equipment as claimed in claim 4 in which a second set of registers provide conversion for inter-register signalling from C.C.I.T.T. M.F. register compelled (R2) system to loop disconnect (LD) system.
  6. 6. A transportable signal conversion interface-equipment as claimed in claim 3 in which a first set of registers provide conversion for inter-register signalling from C.C.l.T.T. M.F. en-block pulsed (Rl) system to C.C.I.T.T. M.F. register compelled (R2) system.
  7. 7. A transportable signal conversion interface-equipment as claimed in claim 6 in which a second set of registers provide conversion for inter-register signalling from C.C.I.T.T. M.F. register compelled (R2) system to C.C.I.T.T. M.F. en-bloc pulsed (Rl) system.
  8. 8. A transportable signal conversion interface-equipment as claimed in any preceding claim in which a junctor provides for conversion from line signalling of the loop disconnect (LD) system to E and M system (using continuous or pulsed signalling codes).
  9. 9. A transportable signal conversion in
    terface-equipment as claimed in claim 8 in which a ju nctor provides for conversion from line signalling of the E and M system (using continuous or pulsed signalling codes) to the loop disconnect (LD) system.
  10. 10. A transportable signal conversion interface-equipment as claimed in claim 9 in which there are a plurality ofjunctors and a plurality of registers, and at least half of the junctors and at least half of the registers are provided for conversion of junctions or trunks extending from an exchange in an existing switching network employing one system of inter-register signalling and several different systems of line-signalling to an exchange in a network expansion section employing another system of inter-register signalling and several different systems of line-signalling and the remaining junctors and registers are provided for conversion of junctions or trunks extending from an exchange in the network expansion section to an exchange in the existing switching network.
  11. I 1. A transportable signal conversion interface-equipment as claimed in any preceding claim in wich the signal conversion interface-equipment is housed in a mobile container.
  12. 12. A transportable signal conversion interface-equipment as claimed in claim 11 in which the mobile container includes its own wheel system to enable it to be transportable.
  13. 13. A transportable signal conversion interface-equipment as claimed in claim 11 in which the mobile container is transportable by loading on a vehicle.
  14. 14. A transportable signal conversion interface-equipment substantially as described herein, with reference to, and as shown in the drawings accompanying the provisional specification.
GB2780377A 1978-04-26 1978-04-26 Transportable signal conversion interface equipment Expired GB1598677A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2780377A GB1598677A (en) 1978-04-26 1978-04-26 Transportable signal conversion interface equipment
KE327483A KE3274A (en) 1978-04-26 1983-03-08 Transportable signal conversion interface equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2780377A GB1598677A (en) 1978-04-26 1978-04-26 Transportable signal conversion interface equipment

Publications (1)

Publication Number Publication Date
GB1598677A true GB1598677A (en) 1981-09-23

Family

ID=10265561

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2780377A Expired GB1598677A (en) 1978-04-26 1978-04-26 Transportable signal conversion interface equipment

Country Status (2)

Country Link
GB (1) GB1598677A (en)
KE (1) KE3274A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1099201C (en) * 1997-02-28 2003-01-15 三星电子株式会社 Register signaling control method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1099201C (en) * 1997-02-28 2003-01-15 三星电子株式会社 Register signaling control method

Also Published As

Publication number Publication date
KE3274A (en) 1983-04-22

Similar Documents

Publication Publication Date Title
EP0161031B1 (en) Telecommunication system, in particular telephone system
CA2054443A1 (en) Switching system of optical transmission lines for protecting from trouble
EP0621716A3 (en) Hybrid telecommunication network management system.
CA2281368A1 (en) Service contract for managing service systems
CA2046259A1 (en) Communication link identifier
DE3787166D1 (en) ANTENNA SYSTEM FOR A HYBRID COMMUNICATION SATELLITE.
AU1760699A (en) Procedure and system for setting up a telecommunication connection
GB1598677A (en) Transportable signal conversion interface equipment
US3364313A (en) Link connector and control equipment for routine and priority connections to operator positions
KR880001020B1 (en) Interface unit for a modular telecommunication system
US4009351A (en) Switching arrangement for telecommunication switching systems
GB1269116A (en) Improvements in or relating to a time division communication system
ATE261643T1 (en) COMMUNICATION SYSTEM OF AT LEAST TWO PBXS WITH TEAM FUNCTION
US3414681A (en) Speech contact network in a telephone system
ATE171795T1 (en) COMPOSITE SOFTWARE SYSTEM AND METHOD OF PRODUCTION THEREOF
ATE4018T1 (en) COUPLING MATRIX WITH CONNECTING PATH REVERSAL, PARTICULARLY FOR TELEPHONE SWITCHING SYSTEMS.
Brini et al. European roaming related technical problems.
US3005875A (en) Motor-operated rotary connector for extending calls to different classes of subscriber stations
RU95115268A (en) LAND TRANSPORT DISPATCH SYSTEM
JPS57183169A (en) Traffic control system
US3281540A (en) Automatic telephone systems
Das Telecommunication in Backward Areas
GB1119403A (en) Improvements in or relating to automatic switching systems
Brillard et al. MDL 38: 38 GHz radio transmission system for urban links
CA2158439A1 (en) Switching equipment arrangement

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee