CA2294878A1 - Method and matching means for utilizing permanent connections of an atm communication network for communication relationships between components of a time-division-oriented communication network - Google Patents
Method and matching means for utilizing permanent connections of an atm communication network for communication relationships between components of a time-division-oriented communication network Download PDFInfo
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- CA2294878A1 CA2294878A1 CA002294878A CA2294878A CA2294878A1 CA 2294878 A1 CA2294878 A1 CA 2294878A1 CA 002294878 A CA002294878 A CA 002294878A CA 2294878 A CA2294878 A CA 2294878A CA 2294878 A1 CA2294878 A1 CA 2294878A1
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- Prior art keywords
- atm
- communication network
- oriented
- connection
- spvc
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
- H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
- H04Q11/0478—Provisions for broadband connections
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5614—User Network Interface
- H04L2012/5615—Network termination, e.g. NT1, NT2, PBX
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5629—Admission control
- H04L2012/563—Signalling, e.g. protocols, reference model
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5629—Admission control
- H04L2012/5631—Resource management and allocation
- H04L2012/5632—Bandwidth allocation
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
According to the invention, permanent virtual ATM connections (PCV, SPVC) are set up between the components (KE, NT, PABX) of a time multiplex-oriented communications network (KN) for communications relations. The current use or non-use of a connection (PCV, SPVC) which has been set up is indicated by a signal requesting the required transmission rate or a low transmission rate (BR). The resources required in the ATM communications network (KN-ATM) are then made available or released by virtue of said signal. This enables a more efficient use of the resources of said ATM communications network.
Description
I~CV L3Y= I~'_ >e3_clri : 1 x, :;;>:iAVI : 1 :31'? f371~ (>f3.3fi~ ~;~\9.~R'I
~ fpIGC;;112: i~ .3 LLV. r ! a I S114LJ 1V'U1 IIIi.L .\ U IJ41 UV.\ 11_n~ 1 U... U, U ~J11JU 1-UtiV
SP~I~CjFIC Tp ioN
METHOD ANa MATCHING MEANS FOR UTIUiZING PERMANENT
CaNNECTIONS OiF AN ATM COMMUNICATION NETWORK FOR
COMMUNICATION RELATIONSHIPS BETWEEN COMPONENTS OF A
TIME-DIVISION-ORIENT!=D COMMUNICATION NETWORK
An ATM communication network is provided In the future in time-division-multiplex-oriented communication networks far connections between the components thereof. The components of the time-division-multiplex-oriented communication network represent, far example, communication o systems or communication terminal equipment connectible thereto such asl for example, personal computers with telephone function.
For the connection between the components of a time-division-multipPex-oriented communication network, particularly between communication terminal equipment and communication systems, DE 195 04 1s X44.5 has already proposed that the time-division-multiplex-orie~tted information be inserted into ATM cells and be transmitted via a virtue! or, respectively, logical ATM transmission channel, whereby an ATM
transmission is allocated to each time-division multiplex channel. DE 195 34 754 C1 also discloslss a method for establishing virtual permanent and 2 o switched virtual connections in the ATM communication network for the switching of narrow band line bundles, i.e tame-division-multiplex-oriented transmission channels. Independently of the utilization by the connected components of the time-division-multiplex-oriented communication network, the requested transmission and switching-oriented resources in thc~ ATM
2 ~ communication network are thereby constantly offered for the respective virtual permanent or switched permanent virtual connection. This means an inefficient utilization of the resources of the ATM communication network, The object underlying the invention is comprised in utilizing the resources of an ATM communication network more e~ciently for the 3 o connection of components of a time-division-multiplex-oriented communication network. This object is achieved by the features of claim 1.
Kcv ~sY : t:_-v;~-3:3 : ~ i : >>A~~ : msi? f,~c; ofs~~~f> :~;nnRO ~
oac~c~.qK.a v . .. w y w. im a sr m ,.r m :.. u, m.r m.~. ~ a a w . .. m a v . ., ~ ~ ~ m v : ,_ . a a T
Th~ critical aspect of the inventive method is to be seen therein that a current utilization of a permanent virtual connection is signaled to the ATM
communication r~eiwark by a signaling requesting the required transmission rate, whereupon the requested transmission nr, respectively, switching-orientdd resources are offered therein, and a current non-utilixatian of a permanent virtual connection is signaled to the ATM communication network by a signaling requesting at least a law transmission rate, whereupon the communication or, respectively, switching-oriented resources offered therein are rr~leased. A critical advantage of the inventive method is to be seen t o therein that the communication-oriented resources of the ATM
communication network are only requested when they are ir, fact required and, cortsequcntly, a significantly mare efficient utifzation of the resources of the r~TM communication network is possible. Th~a path infom~ation -virtual path and channel information - required far the communication of the is information in the ATM cnmmunicatian network is thereby preserved, i.e.
need not be modified. The comrrrunieation-orientea resources of the ATM
communication network are requested, offered and in turn released only on the basis of signaling different transmission rates.
According to an advantageous de~,reloprnent of the inventive method, a a current utilization of a permanent virtual connection by a current switching of a connection and a current non-utilization of a permanent virtual connection is represented by a current release of a connection (V) given a switching of connections between components of a tune-division-multiplex oriented communication network via permanent virtual connections of an 2 ~ AT'M cort~munication nefiwork - claim 2. This utilization of permanent virtual connections is parkieulariy provided for time-division-multiplex-oriented dialed connections - future ISf~N dialed connections - conducted over the ATM
comrnunication nehnrork.
A current utilization is usually represented by the beginning of a setup of a connection and a current non-utilization is usually represented by the end of a cieardown of a connection, particularly ISpN connections, in the time-division-multiplex-oriented communication network - claim 3. Due to the hC'~ lil : ly._y;3:j;) : I I : i iA~l : 1 C31_~ 87Ei (lf3S)fi~
_W,IR~f k l31 CG:1ls : sl L L V - . . J ~ 11 L Lr I 1 V ~ U V I I ! v .u N ~I : .~ 11 iJ ~l 1 1 L a. ~ a 1J : L IJ , IJ i V a L
1 VV~.
standardised signalings in the time-division-multiplex-oriented communicaltion nehnrorks, the beginning of the setup of a connection and the er~d of the cleardown of a connection can be unambiguously identified, and a signaling with the change of the bit rate can be initiated to the ATM
communication network.
'The permanent virtual connection in the ATM communication network can be established both as a permanent virtua9 or switched permanent virtual cannectior - claim ~. A switched permalnent virtual connection can be advantageously established with ATM signaling cells; in the ATM
1 o communication network. A permanent virtual connection is usually established by administration and maintenance inputs at a central manager means or at an ATM communication system.
According to another advantageous development of the inventive method, an ATM modification cell indicating the required transmission rate is former! and communicated to the ATM communication network at the beginning of a current utilization of a perma~~ent virtual connection and an ATM modification cell indicating an at 1~ast low transmission rate is farmed and commurwicated to the ATM communication network at the end of a current utilization of a permanent virtual connection - claim 5. Such ATM
t o modification cells indicating the modiflcatian of the transmission rate are advantageously formed with the assistance of modified, standardized ATM
signaling cells - claim s, Widespread standards for ATM communication systems are represented, far example, the protocols AAL1..5 - ATM adoption layer 1...5 - standardlzsd by the ATM Forum, whereby a signaling message 'v5 indicating the change of the bit rate is advantageously formed by a quality of servic~ message supplemented by the modification function. This supplement quality of service message is communicated from the ATM
comrrmunication terminal squipment to the ATM cornmunicati4n terminal equipment and is additionally effective In the ATM communication network, 3 c Further advantageous developments of an adaptation means for realizing the inventive method can be derived from the other claims.
f~tv t> r : < <~. ,~,,a:o : i i : r~>rrr~ : ~ :3 ~ 2 :~~c; nf;:or-, ~>r~ah~r ,~;~ a o:wcEnK : n E;
a LnJ r J J y I I L UI ; .I V ~ .: 1 : 1 I L n. IA t 1 !1 W 'J .i ! 1. u. ~ 1 V . r 11 : V ~..r V ' U 1 L U 2' The inventive method is explained in greater detail below with reference to a block circuit diagram.
-f he block circuit diagram shown an application of the inventive method behnreen a switching equipment, particularly a private communication system PABX and communication terminal equipment Kt=l...connected thereto. bet it be assumed for the exemplary embodiment that the communication terminal equipment KE1....are connected to a network termination NT via an ISDN base connection S0, whereby the signaling or, respectively, the communication of information ensues according to the ISDN
~n signaling protocol. The network termination NT realizes an ISDN base connecfic~n SO in view of the physical and procedural properties and also realizes an adaptation to a line interface U, whereby this, dependent on tile application, is realized by a line interface lJ acting according to the echo compensation method or the discrete time slot method. This line interface, further, is realized in an adaptation means ANP that is connected to an ATM
communication netv~or~ via a communication terminal KA, A further adaptation means A.NP' in which an ISDN base connection SO that is connected to an ISDN base connection SO of the private communication system PAI3X is realized is connected to the ATM communication network 2 c KN-ATM via a further communication terminal KA, Hiternatively, a proprietary interface IOM2 - with expanded ISDN-oriented signaling protocol - is provided, this realizing a V1 or, respectively, V4 reference point defined in ITU-T Recommendation x.980 - indicated by the designation ICtM2, V1 in the block circuit diagram. These reference 25 points define physical and procedural ISDN signaling reference points for two or more message channels and a signaling channel. In the ITU-T
Recommendation Gr960, the physical activation and deactivation procedures as welt as ISDN-oriented signaling protocols era defined, these [..] between the SO int~erfaca SO at the communication terminal KE - corresponds to the T-reference point designated in the standard - and the V-reference paints V1 at the cornmunicatian ayatern PA9X, i~(_'~ K1' : i'?-'?:1- S1J : i 1 : ~ ~~1~1 : I a31 ~~ f3 it; ot;.;;~t-~
':l1.aiZ~l' K 13 f c.~G:~iZ : t~ 7 uL.s:~ -.. J. I".'~LL~: IU"v1 I.ILL U 1!n.'1f UJ.1 IL:..~ L \I:r U. J '.'W V 1 ~ V~' In the exemplary embodiment, the payload information r1i - for example, digitalized voles information or facsimile information - to be communicated as well as ISpN signaling information si are exchanged according to the standardized ISDN base cannectlon SO ~ see iTU-T
3 Recommendation 1.430. This means that the ISl7N signaling and payload information si, ni are to be communicat~d transparently over the ATM
communication network KN-ATM. Ta this end, a permanent virtual or a switching [sic] permanent virtual connection PVC, SPVC are signaled or, respectively, established in the A~l-M communication network KN-ATM, 1 a whereuy these virtual, permanent connections PVC, SPVC are signaled or, respectively, established once dependent an the prQVided communication re8ationships- between dhe respective communication terminal equipmr~nt K~,.and the private communication system PABX in the exemplary embodiment - given an installation of the communication arrangement ~,~escribed in the block circuit diagram - indicated in tha exemplary embodiment by a dot-dash line with arrows at both ends. The establishment of seeking [sicj virtual, permanent connections SPVC is effected by setup ATM cells r;not shown) and the establishm~nt of virtual, permanent rannectians RVC is effected by administration and maintenance instructions in the ATM communication network. For ex;~mple, a permanent virtual or, respectively, switched permanent virtual connection PVC, SPVC is signaled or, respectively, established for each transmission direction for each ISpN
transmission channel hewing B4 kbit;s and each ISDN signaling channel having 1S kbitls. The plurality of connections PVC:, SPVC to be established is thereby dependent on the plurality of connections to be conducted over the ATM communication network KN-ATM between the communication terminal equipment KE1".and the communication system PABX.
According to the previously known methods, a transmission rate - a transrnissior; rate of 64 kbitsls and 18 kbitls given ISDN transmission and signaling channels - or, respectively, transmission or, respectively, switching-oriented resaurGea that must be available constantly or, respectively, at any time are requested when establishing permanent virtual and switching [sicj RC'\ t3Y : I'?-~?:)-9:3 : 1 I : ~EWSI : ! :31~.' f3 ir; I)f3:3ft-5.11riR~l_ ~ ti 1 GGAAR : N f3 ~~ L I ~ . L J J I t I L U ~ 1 n.~ ~ U ~ I . I 1. L iA .. 1 .~1. U V .1 1 L L
~ : V . r t, ~ L .r U J Il _ ~ V U V
permanent virtual connections PVC, SPVC, These communication or, respectively, switching-oriental resources are now more efficiently utilized as a result of the inventive method.
The inventive method is explained in greater detail an the basis of the executive sequence shown in the lower part of the black circuit diagram. bet it thereby be assumed that the illustrated communication terminal equipment KE would like to carry out an information exchange with another communication terminal equipment (not shown). Ta this and, a connection setup between the communication terminal equipment and the adaptation means ANP is initiated according to the ISDN signaling protocol for the purpose of setting up a convection - indicated in the exemplary embodiment by a dashed line referenced V having arrows at bath ends. In the course of this connection SETUP, an ATM modification cell MZ is formed in the adaptation means ANP and is communicated via the ATM communication 2 s network KN-ATM to th~ adaptation means ANP' lying there appos'tte, whereby the transmission rate or, respectively, bit transmission rate BR of Z
x 6A kbit and 16 kbit provided far an ISDN connection is indicated in the ATM
modification cell MZ. Subseql~ently, the requested transmission-oriented and switching-oriented resources requested are made available in the ATM
zo communication network Khi-ATM, and the connection SETUP to the private communication system is initiated in the opposite adaptation rrleans ANP'.
The flJrther signaling information or, respectively, messages provided in the connection SETUP of an ISDN connection V are communicated via the switching-oriented and transmission-oriented resources of the permanent 2 ~ virtual or switching [sic] permanent virtual connection PVC, SPVC that are setup.
After the end of the connection setup, ISDN-oriented payload information ni to be communicated from the communication terminal equipment ICE as well as further signaling information si are inserted into 3 o ATIU! cells Z(ni, si) in the adaptation means ANP and are transparently communicated via the ATM communication network KN~ATM to the opposite adaptation means ANP', are taken thereat from the ATM cells Z(ni, si) and KC'1 fir : I ~?_ 'J-:~~~ : I s : -'~7P,11 : 1 :i I'_' B7e nFiS3r;- ShIAK'I XL
r31 GGAK : tt ;) ..; L t. L .' . ! 1 ' I L U ~ . . ,. - I 1 1 ., L W A I . ~ I m.' _ t I L L ' L V 1 v L W I ~. V .l ll 1 L i i 1 are forwarded tc the private communication system PA6X. The Information communication in the opposite direction ensues in an analogous voay.
After the initiation of a connection RELEASE of the connection V" an ATM modification cell MZ is formed in the adaptation means ANP and is communicated via the ATM communication KN-ATM to the opposite adaptation means A1~P', whereby a transmission rate or, respectively, pit transmission rate BR of iJ kbitls is entered. Instead of the 0-bit transmission rate C~Ft, a very low tranr~mission rate HR of, for example, a few bids can be indicated. Subsequently, the switching-oriented and transmission-oriented ~. a resources offered or, respectively, made available in the ATM
~.~ommunication system KN-ATM are in turn released and the connection release RELEASE to the private communication system PABX is initiated in the opposite adaptation unitANF'. The ISDN-conforming connection release or, respectively, the ISpN protocol messages and reaction times required for ~5 this purpose are independently implemented in the two adoption means ANP, ANP'.
Given standardized ATM transmission protocols or, respectively, ATM
adoption layers, the ATM modification cell MZ is realized by a quality of service message, since bath the ATM communication network KN-ATM as well as an ATM communication terminal equipment means, the opposite adoption means ANP' in the exemplary emirodiment can react to such a quality of service message. Making the requested switching-oriented and transmission-oriented resources available or releasing them as well as initiating a connection setup or release tc the private communication system PABX or, respectively, the connection release [sick to be connected that were described above are provided as reactions.
The inventive method is not limitr~d to only ISDN-oriented communication networks but can be utilized in al! time'-diwisian-multipfex-oriented communication networks - for example digital t~alephone networks.
The use of tire inventive method between private communication systems PABX are between public communication systems (not shown) or between IZC'~ iSY : I p._.Jlcj _;):j : 1 1 : ~>7AV1 : f :S I'? Fl i11 ~Ji3,lf:-j SV1AR~1' & B I (.~GAh : N i t) :u L V . L 1 J J ~ II :.. U I a L ~ V r :1 1 _ L iA i ~ 1 '1V U .1 1 L L ~ L V
1 r V ~ U _' V J L! 1 . L t V
communication systems and other lime-division-multiplex-oriented communication equipment is hereby possible.
~ fpIGC;;112: i~ .3 LLV. r ! a I S114LJ 1V'U1 IIIi.L .\ U IJ41 UV.\ 11_n~ 1 U... U, U ~J11JU 1-UtiV
SP~I~CjFIC Tp ioN
METHOD ANa MATCHING MEANS FOR UTIUiZING PERMANENT
CaNNECTIONS OiF AN ATM COMMUNICATION NETWORK FOR
COMMUNICATION RELATIONSHIPS BETWEEN COMPONENTS OF A
TIME-DIVISION-ORIENT!=D COMMUNICATION NETWORK
An ATM communication network is provided In the future in time-division-multiplex-oriented communication networks far connections between the components thereof. The components of the time-division-multiplex-oriented communication network represent, far example, communication o systems or communication terminal equipment connectible thereto such asl for example, personal computers with telephone function.
For the connection between the components of a time-division-multipPex-oriented communication network, particularly between communication terminal equipment and communication systems, DE 195 04 1s X44.5 has already proposed that the time-division-multiplex-orie~tted information be inserted into ATM cells and be transmitted via a virtue! or, respectively, logical ATM transmission channel, whereby an ATM
transmission is allocated to each time-division multiplex channel. DE 195 34 754 C1 also discloslss a method for establishing virtual permanent and 2 o switched virtual connections in the ATM communication network for the switching of narrow band line bundles, i.e tame-division-multiplex-oriented transmission channels. Independently of the utilization by the connected components of the time-division-multiplex-oriented communication network, the requested transmission and switching-oriented resources in thc~ ATM
2 ~ communication network are thereby constantly offered for the respective virtual permanent or switched permanent virtual connection. This means an inefficient utilization of the resources of the ATM communication network, The object underlying the invention is comprised in utilizing the resources of an ATM communication network more e~ciently for the 3 o connection of components of a time-division-multiplex-oriented communication network. This object is achieved by the features of claim 1.
Kcv ~sY : t:_-v;~-3:3 : ~ i : >>A~~ : msi? f,~c; ofs~~~f> :~;nnRO ~
oac~c~.qK.a v . .. w y w. im a sr m ,.r m :.. u, m.r m.~. ~ a a w . .. m a v . ., ~ ~ ~ m v : ,_ . a a T
Th~ critical aspect of the inventive method is to be seen therein that a current utilization of a permanent virtual connection is signaled to the ATM
communication r~eiwark by a signaling requesting the required transmission rate, whereupon the requested transmission nr, respectively, switching-orientdd resources are offered therein, and a current non-utilixatian of a permanent virtual connection is signaled to the ATM communication network by a signaling requesting at least a law transmission rate, whereupon the communication or, respectively, switching-oriented resources offered therein are rr~leased. A critical advantage of the inventive method is to be seen t o therein that the communication-oriented resources of the ATM
communication network are only requested when they are ir, fact required and, cortsequcntly, a significantly mare efficient utifzation of the resources of the r~TM communication network is possible. Th~a path infom~ation -virtual path and channel information - required far the communication of the is information in the ATM cnmmunicatian network is thereby preserved, i.e.
need not be modified. The comrrrunieation-orientea resources of the ATM
communication network are requested, offered and in turn released only on the basis of signaling different transmission rates.
According to an advantageous de~,reloprnent of the inventive method, a a current utilization of a permanent virtual connection by a current switching of a connection and a current non-utilization of a permanent virtual connection is represented by a current release of a connection (V) given a switching of connections between components of a tune-division-multiplex oriented communication network via permanent virtual connections of an 2 ~ AT'M cort~munication nefiwork - claim 2. This utilization of permanent virtual connections is parkieulariy provided for time-division-multiplex-oriented dialed connections - future ISf~N dialed connections - conducted over the ATM
comrnunication nehnrork.
A current utilization is usually represented by the beginning of a setup of a connection and a current non-utilization is usually represented by the end of a cieardown of a connection, particularly ISpN connections, in the time-division-multiplex-oriented communication network - claim 3. Due to the hC'~ lil : ly._y;3:j;) : I I : i iA~l : 1 C31_~ 87Ei (lf3S)fi~
_W,IR~f k l31 CG:1ls : sl L L V - . . J ~ 11 L Lr I 1 V ~ U V I I ! v .u N ~I : .~ 11 iJ ~l 1 1 L a. ~ a 1J : L IJ , IJ i V a L
1 VV~.
standardised signalings in the time-division-multiplex-oriented communicaltion nehnrorks, the beginning of the setup of a connection and the er~d of the cleardown of a connection can be unambiguously identified, and a signaling with the change of the bit rate can be initiated to the ATM
communication network.
'The permanent virtual connection in the ATM communication network can be established both as a permanent virtua9 or switched permanent virtual cannectior - claim ~. A switched permalnent virtual connection can be advantageously established with ATM signaling cells; in the ATM
1 o communication network. A permanent virtual connection is usually established by administration and maintenance inputs at a central manager means or at an ATM communication system.
According to another advantageous development of the inventive method, an ATM modification cell indicating the required transmission rate is former! and communicated to the ATM communication network at the beginning of a current utilization of a perma~~ent virtual connection and an ATM modification cell indicating an at 1~ast low transmission rate is farmed and commurwicated to the ATM communication network at the end of a current utilization of a permanent virtual connection - claim 5. Such ATM
t o modification cells indicating the modiflcatian of the transmission rate are advantageously formed with the assistance of modified, standardized ATM
signaling cells - claim s, Widespread standards for ATM communication systems are represented, far example, the protocols AAL1..5 - ATM adoption layer 1...5 - standardlzsd by the ATM Forum, whereby a signaling message 'v5 indicating the change of the bit rate is advantageously formed by a quality of servic~ message supplemented by the modification function. This supplement quality of service message is communicated from the ATM
comrrmunication terminal squipment to the ATM cornmunicati4n terminal equipment and is additionally effective In the ATM communication network, 3 c Further advantageous developments of an adaptation means for realizing the inventive method can be derived from the other claims.
f~tv t> r : < <~. ,~,,a:o : i i : r~>rrr~ : ~ :3 ~ 2 :~~c; nf;:or-, ~>r~ah~r ,~;~ a o:wcEnK : n E;
a LnJ r J J y I I L UI ; .I V ~ .: 1 : 1 I L n. IA t 1 !1 W 'J .i ! 1. u. ~ 1 V . r 11 : V ~..r V ' U 1 L U 2' The inventive method is explained in greater detail below with reference to a block circuit diagram.
-f he block circuit diagram shown an application of the inventive method behnreen a switching equipment, particularly a private communication system PABX and communication terminal equipment Kt=l...connected thereto. bet it be assumed for the exemplary embodiment that the communication terminal equipment KE1....are connected to a network termination NT via an ISDN base connection S0, whereby the signaling or, respectively, the communication of information ensues according to the ISDN
~n signaling protocol. The network termination NT realizes an ISDN base connecfic~n SO in view of the physical and procedural properties and also realizes an adaptation to a line interface U, whereby this, dependent on tile application, is realized by a line interface lJ acting according to the echo compensation method or the discrete time slot method. This line interface, further, is realized in an adaptation means ANP that is connected to an ATM
communication netv~or~ via a communication terminal KA, A further adaptation means A.NP' in which an ISDN base connection SO that is connected to an ISDN base connection SO of the private communication system PAI3X is realized is connected to the ATM communication network 2 c KN-ATM via a further communication terminal KA, Hiternatively, a proprietary interface IOM2 - with expanded ISDN-oriented signaling protocol - is provided, this realizing a V1 or, respectively, V4 reference point defined in ITU-T Recommendation x.980 - indicated by the designation ICtM2, V1 in the block circuit diagram. These reference 25 points define physical and procedural ISDN signaling reference points for two or more message channels and a signaling channel. In the ITU-T
Recommendation Gr960, the physical activation and deactivation procedures as welt as ISDN-oriented signaling protocols era defined, these [..] between the SO int~erfaca SO at the communication terminal KE - corresponds to the T-reference point designated in the standard - and the V-reference paints V1 at the cornmunicatian ayatern PA9X, i~(_'~ K1' : i'?-'?:1- S1J : i 1 : ~ ~~1~1 : I a31 ~~ f3 it; ot;.;;~t-~
':l1.aiZ~l' K 13 f c.~G:~iZ : t~ 7 uL.s:~ -.. J. I".'~LL~: IU"v1 I.ILL U 1!n.'1f UJ.1 IL:..~ L \I:r U. J '.'W V 1 ~ V~' In the exemplary embodiment, the payload information r1i - for example, digitalized voles information or facsimile information - to be communicated as well as ISpN signaling information si are exchanged according to the standardized ISDN base cannectlon SO ~ see iTU-T
3 Recommendation 1.430. This means that the ISl7N signaling and payload information si, ni are to be communicat~d transparently over the ATM
communication network KN-ATM. Ta this end, a permanent virtual or a switching [sic] permanent virtual connection PVC, SPVC are signaled or, respectively, established in the A~l-M communication network KN-ATM, 1 a whereuy these virtual, permanent connections PVC, SPVC are signaled or, respectively, established once dependent an the prQVided communication re8ationships- between dhe respective communication terminal equipmr~nt K~,.and the private communication system PABX in the exemplary embodiment - given an installation of the communication arrangement ~,~escribed in the block circuit diagram - indicated in tha exemplary embodiment by a dot-dash line with arrows at both ends. The establishment of seeking [sicj virtual, permanent connections SPVC is effected by setup ATM cells r;not shown) and the establishm~nt of virtual, permanent rannectians RVC is effected by administration and maintenance instructions in the ATM communication network. For ex;~mple, a permanent virtual or, respectively, switched permanent virtual connection PVC, SPVC is signaled or, respectively, established for each transmission direction for each ISpN
transmission channel hewing B4 kbit;s and each ISDN signaling channel having 1S kbitls. The plurality of connections PVC:, SPVC to be established is thereby dependent on the plurality of connections to be conducted over the ATM communication network KN-ATM between the communication terminal equipment KE1".and the communication system PABX.
According to the previously known methods, a transmission rate - a transrnissior; rate of 64 kbitsls and 18 kbitls given ISDN transmission and signaling channels - or, respectively, transmission or, respectively, switching-oriented resaurGea that must be available constantly or, respectively, at any time are requested when establishing permanent virtual and switching [sicj RC'\ t3Y : I'?-~?:)-9:3 : 1 I : ~EWSI : ! :31~.' f3 ir; I)f3:3ft-5.11riR~l_ ~ ti 1 GGAAR : N f3 ~~ L I ~ . L J J I t I L U ~ 1 n.~ ~ U ~ I . I 1. L iA .. 1 .~1. U V .1 1 L L
~ : V . r t, ~ L .r U J Il _ ~ V U V
permanent virtual connections PVC, SPVC, These communication or, respectively, switching-oriental resources are now more efficiently utilized as a result of the inventive method.
The inventive method is explained in greater detail an the basis of the executive sequence shown in the lower part of the black circuit diagram. bet it thereby be assumed that the illustrated communication terminal equipment KE would like to carry out an information exchange with another communication terminal equipment (not shown). Ta this and, a connection setup between the communication terminal equipment and the adaptation means ANP is initiated according to the ISDN signaling protocol for the purpose of setting up a convection - indicated in the exemplary embodiment by a dashed line referenced V having arrows at bath ends. In the course of this connection SETUP, an ATM modification cell MZ is formed in the adaptation means ANP and is communicated via the ATM communication 2 s network KN-ATM to th~ adaptation means ANP' lying there appos'tte, whereby the transmission rate or, respectively, bit transmission rate BR of Z
x 6A kbit and 16 kbit provided far an ISDN connection is indicated in the ATM
modification cell MZ. Subseql~ently, the requested transmission-oriented and switching-oriented resources requested are made available in the ATM
zo communication network Khi-ATM, and the connection SETUP to the private communication system is initiated in the opposite adaptation rrleans ANP'.
The flJrther signaling information or, respectively, messages provided in the connection SETUP of an ISDN connection V are communicated via the switching-oriented and transmission-oriented resources of the permanent 2 ~ virtual or switching [sic] permanent virtual connection PVC, SPVC that are setup.
After the end of the connection setup, ISDN-oriented payload information ni to be communicated from the communication terminal equipment ICE as well as further signaling information si are inserted into 3 o ATIU! cells Z(ni, si) in the adaptation means ANP and are transparently communicated via the ATM communication network KN~ATM to the opposite adaptation means ANP', are taken thereat from the ATM cells Z(ni, si) and KC'1 fir : I ~?_ 'J-:~~~ : I s : -'~7P,11 : 1 :i I'_' B7e nFiS3r;- ShIAK'I XL
r31 GGAK : tt ;) ..; L t. L .' . ! 1 ' I L U ~ . . ,. - I 1 1 ., L W A I . ~ I m.' _ t I L L ' L V 1 v L W I ~. V .l ll 1 L i i 1 are forwarded tc the private communication system PA6X. The Information communication in the opposite direction ensues in an analogous voay.
After the initiation of a connection RELEASE of the connection V" an ATM modification cell MZ is formed in the adaptation means ANP and is communicated via the ATM communication KN-ATM to the opposite adaptation means A1~P', whereby a transmission rate or, respectively, pit transmission rate BR of iJ kbitls is entered. Instead of the 0-bit transmission rate C~Ft, a very low tranr~mission rate HR of, for example, a few bids can be indicated. Subsequently, the switching-oriented and transmission-oriented ~. a resources offered or, respectively, made available in the ATM
~.~ommunication system KN-ATM are in turn released and the connection release RELEASE to the private communication system PABX is initiated in the opposite adaptation unitANF'. The ISDN-conforming connection release or, respectively, the ISpN protocol messages and reaction times required for ~5 this purpose are independently implemented in the two adoption means ANP, ANP'.
Given standardized ATM transmission protocols or, respectively, ATM
adoption layers, the ATM modification cell MZ is realized by a quality of service message, since bath the ATM communication network KN-ATM as well as an ATM communication terminal equipment means, the opposite adoption means ANP' in the exemplary emirodiment can react to such a quality of service message. Making the requested switching-oriented and transmission-oriented resources available or releasing them as well as initiating a connection setup or release tc the private communication system PABX or, respectively, the connection release [sick to be connected that were described above are provided as reactions.
The inventive method is not limitr~d to only ISDN-oriented communication networks but can be utilized in al! time'-diwisian-multipfex-oriented communication networks - for example digital t~alephone networks.
The use of tire inventive method between private communication systems PABX are between public communication systems (not shown) or between IZC'~ iSY : I p._.Jlcj _;):j : 1 1 : ~>7AV1 : f :S I'? Fl i11 ~Ji3,lf:-j SV1AR~1' & B I (.~GAh : N i t) :u L V . L 1 J J ~ II :.. U I a L ~ V r :1 1 _ L iA i ~ 1 '1V U .1 1 L L ~ L V
1 r V ~ U _' V J L! 1 . L t V
communication systems and other lime-division-multiplex-oriented communication equipment is hereby possible.
Claims (10)
1, Method for the utilization of permanent virtual connections (PVC, SPVC) of an ATM communication network (KN-ATM) that are provided for communication relationships between components (KE, NT, PABX) of a time-division-multiplex-oriented communication network (KN), - whereby a current switching of a time-division-multiplex-oriented connection (V) via a permanent virtual connection (PVC, SPVC) is signaled to the ATM communication network (KN-ATM) by a signaling requesting a required transmission rate (BR), whereupon the requested transmission-oriented or, respectively, switching-oriented resources are offered therein; and - whereby a current release of a time-division-multiplex-oriented connection (V) via a permanent virtual connection (PVC, SPVC) is signaled to the ATM communication network (KN-ATM) by a signaling requesting at least a low transmission rate (BR), whereupon the offered transmission-oriented or, respectively, switching-oriented resources are released therein.
CLAIMS:
CLAIMS:
2. Method according to claim 1, characterized in that, given a switching of connections (V) between components (KE, NT, PABX) of a time-division-multiplex-oriented communication network (KN) via permanent mutual connections (PVC, SPVC) of a communication network (KN-ATM), - a current utilization of a permanent virtual connection (PVC, SPVC) is represented by a current switching of a connection (V); and - a current non-utilization of a permanent virtual connection (PVC, SPVC) is represented by a current release of a connection (V).
3. Method according to one of the claims 1 or 2, characterized in that a current utilization is represented by the beginning of a setup of a connection (V) and a current non-utilization is represented by the end of a release of a connection (V) in the time-division-multiplex-oriented communication network (KN).
4. Method according to one of the claims 1 through 3, characterized in that the permanent virtual connection (PVC, SPVC) is signaled or established as permanent virtual or switched permanent virtual connection (PVC, SPVC) in the ATM communication network (KN-ATM).
5. Method according to one of the claims 1 through 4, characterized in that, at the beginning of a current utilization of a permanent virtual connection (PVC, SPVC), an ATM modification cell (MZ) indicating the required transmission required rate (BR) is formed and communicated to the ATM communication network (KN-ATM) and, at the end of a current utilization of a permanent virtual connection (PVC, SPVC), an ATM
modification cell (MZ) indicating at least a low transmission rate (BR) is formed and communicated to the ATM communication network (KN-ATM).
modification cell (MZ) indicating at least a low transmission rate (BR) is formed and communicated to the ATM communication network (KN-ATM).
6. Method according to claim 5, characterized in that the ATM
modification cells (MZ) indicating the modification of the transmission rate (BR) are formed by modified, standardized ATM signaling cells.
modification cells (MZ) indicating the modification of the transmission rate (BR) are formed by modified, standardized ATM signaling cells.
7. Adaptation means for utilizing permanent virtual connections (PVC, SPVC) of an ATM communication network (KN-ATM) that are provided for communication relationships between components (KE, NT, PABX) of a time-division-multiplex-oriented communication network (KN), - comprising means far connection to a time-division multiplex-oriented communication network (KN) and to an ATM communication network (KN-ATM):
- comprising means for the conversion of signaling and transmission protocols of the time-division-multiplex-oriented and ATM
communication network (KN, KN-ATM);
- whereby a current utilization of a permanent virtual connection (PVC, SPVC) is signaled to the ATM communication network (KN-ATM) by a signaling requesting the required transmission rate (BR), whereupon the requested transmission-oriented or, respectively switching-oriented resources are offered therein;
whereby a current non-utilization of a permanent virtual connection (PVC, SPVC) is signaled to the ATM
communication network (KN-ATM) by a signaling requesting at least a low transmission rate (BR), whereupon the offered transmission-oriented or, respectively, switching-oriented resources are released therein.
- comprising means for the conversion of signaling and transmission protocols of the time-division-multiplex-oriented and ATM
communication network (KN, KN-ATM);
- whereby a current utilization of a permanent virtual connection (PVC, SPVC) is signaled to the ATM communication network (KN-ATM) by a signaling requesting the required transmission rate (BR), whereupon the requested transmission-oriented or, respectively switching-oriented resources are offered therein;
whereby a current non-utilization of a permanent virtual connection (PVC, SPVC) is signaled to the ATM
communication network (KN-ATM) by a signaling requesting at least a low transmission rate (BR), whereupon the offered transmission-oriented or, respectively, switching-oriented resources are released therein.
8. Adaptation means according to claim 7, characterized in that the connection to the time-division-multiplex-oriented communication network (KN) ensues with an ISDN base connection (SO), ISDN primary connection or with are ISDN line connection (U) and the connection to an ATM
communication network (KN-ATM) ensues via an ATM communication terminal (K).
communication network (KN-ATM) ensues via an ATM communication terminal (K).
9, Adaptation means according to claim 7 or 8, characterized in that the means for converting signaling and transmission protocols of the time-division-multiplex-oriented an ATM communication network (KN, ATM) are realized by program-oriented means in a processor-controlled adaptation means (ANP, ANP').
10. Adaptation means according to one of the preceding claims, characterized in that the communication system-side adaptation means (ANP') is realized as an independent adaptation means (ANP') or as an adaptation means (ANP') integrated into the communication system (PABX).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19727805.1 | 1997-06-30 | ||
| DE1997127805 DE19727805A1 (en) | 1997-06-30 | 1997-06-30 | Method and adaptation device for using permanent connections of an ATM communication network for communication relationships between components of a time-division-oriented communication network |
| PCT/DE1998/001735 WO1999002008A1 (en) | 1997-06-30 | 1998-06-24 | Use of permanent atm connections for communications relations between components of a tdm network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2294878A1 true CA2294878A1 (en) | 1999-01-14 |
Family
ID=7834124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002294878A Abandoned CA2294878A1 (en) | 1997-06-30 | 1998-06-24 | Method and matching means for utilizing permanent connections of an atm communication network for communication relationships between components of a time-division-oriented communication network |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0993757A1 (en) |
| CA (1) | CA2294878A1 (en) |
| DE (1) | DE19727805A1 (en) |
| WO (1) | WO1999002008A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2344488B (en) * | 1998-03-09 | 2000-08-09 | Nec Corp | Permanent virtual circuit communication system |
| JP3152297B2 (en) * | 1998-03-09 | 2001-04-03 | 日本電気株式会社 | PVC communication method |
| EP1059828A1 (en) * | 1999-06-11 | 2000-12-13 | BRITISH TELECOMMUNICATIONS public limited company | Bandwidth allocation as a function of time in a communications network |
| JP3508669B2 (en) * | 2000-01-18 | 2004-03-22 | 日本電気株式会社 | ATM connection bandwidth control method |
| HU231201B1 (en) | 2018-08-17 | 2021-09-28 | László Eredics | Cable drum made of one or more types materials |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5345445A (en) * | 1992-11-06 | 1994-09-06 | At&T Bell Laboratories | Establishing telecommunications calls in a broadband network |
| KR19980702938A (en) * | 1995-03-08 | 1998-09-05 | 피들러 피터 | Broadband switching system |
| DE19534755C1 (en) * | 1995-09-19 | 1997-01-30 | Siemens Ag | Method for switching narrowband trunk groups between communication systems via an ATM communication network |
-
1997
- 1997-06-30 DE DE1997127805 patent/DE19727805A1/en not_active Ceased
-
1998
- 1998-06-24 CA CA002294878A patent/CA2294878A1/en not_active Abandoned
- 1998-06-24 EP EP98941229A patent/EP0993757A1/en not_active Withdrawn
- 1998-06-24 WO PCT/DE1998/001735 patent/WO1999002008A1/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0993757A1 (en) | 2000-04-19 |
| WO1999002008A1 (en) | 1999-01-14 |
| DE19727805A1 (en) | 1999-07-15 |
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| Date | Code | Title | Description |
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| FZDE | Discontinued |