WO2002073940A2

WO2002073940A2 - Method for call distribution in a telecommunication network and components used in such a method

Info

Publication number: WO2002073940A2
Application number: PCT/DE2002/000811
Authority: WO
Inventors: Jürgen LANTERMANN
Original assignee: Siemens Aktiengesellschaft
Priority date: 2001-03-14
Filing date: 2002-03-08
Publication date: 2002-09-19
Also published as: DE10112309A1; WO2002073940A3; DE10291000D2

Abstract

The invention relates to a method according to which a call distribution function is carried out in response to a characteristic (EN) selected by a calling subscriber. The call distribution function selects one characteristic (PN1) of at least two defined characteristics (PN1 to PN3) according to a defined selection method. The call of the calling subscriber (TlnA) is routed using said selected characteristic.

Description

description

Call distribution method in a telecommunications network and associated components

The invention relates to a method in which a call is carried out on the basis of a number chosen by a calling subscriber.

The identifier is usually a phone number. However, there are also countries in which letters are included in the license plates. Call issuing procedures in which terminal devices of a terminal device group are included in the call distribution are known, for example, from the standard ECMA-269 (European Computer Manufacturers Association), 3rd edition - December 1998, section 6.1.3.4 "Device Categories". Section 6.1.3.4.3 explains a function called the ACD device category. ACD stands for "Automatic Call Distributer", i.e. for an automatic call issuing function. According to section 6.1.3.5.1 "Group Device Attributes", there are several options for selecting a device from a device group, for example so-called hunting, in which the devices are selected, for example, cyclically or depending on which device has not been in the longest Call distribution has been included.

Call distribution functions are also known at the level of traffic control in circuit-switched telecommunications networks, see for example "Technology of the Networks", Gerd Sigmund, 4th edition, Hüting Verlag Heidelberg, page 182. Accordingly, there are basically two methods for traffic control, namely the traffic control in sections and the wide-ranging traffic control. The route is used for the traffic control in sections. to the subscriber from exchange to exchange, section by section, newly sought. Traffic is routed on the basis of the dialing digits received and on the basis of stored traffic routing numbers. bark that are updated at regular intervals. In the case of long-range traffic routing, on the other hand, the route to the subscriber at the beginning of the connection is determined for the entire route from the calling subscriber to the called subscriber. A route is determined using bundle names.

A bundle contains several transmission links that lead to the same destination. The transmission links are, for example, transmission channels that are arranged in a defined time frame. PCM systems (Pulse Code Modulation) are often used.

It is an object of the invention to provide a simple method for call distribution in a telecommunications network, which in particular allows new. Performance features for the

To provide participants and also for the operators of switching technology facilities. In addition, an associated program, an associated switching center and an associated data processing system are to be specified.

The object related to the method is achieved by the method steps specified in claim 1. Further developments are specified in the subclaims.

In the method according to the invention, the call distribution function selects an identifier from at least two identifiers according to a predetermined selection method, among which switching equipment, for example telecommunications systems or gateway units, from the same operator in the telecommunications network can be selected. Using the selected license plate, the call of the calling subscriber is forwarded to the telecommunications system that can be reached under the selected license plate. Due to their switching function, the switching technology facilities are not classic end devices, although you can connect them to the telecommunications cation network are connected, on which is signaled according to a subscriber signaling protocol.

The telecommunications network is a circuit-switched data transmission network, in which transmission channels are connected during a connection establishment phase. However, parts of the transmission in the telecommunications network can also be carried out with the inclusion of data transmission networks, for example with the inclusion of the Internet, as is the case with Internet telephony (Voice over Internet Protocol).

A telecommunication system is a switching technology device that is usually used for free switching within the private premises of the operator of the telecommunication system. However, the operators of the telecommunication networks also offer so-called virtual telecommunication systems in which the functions of the telecommunication system are provided by switching centers. However, telecommunications systems can also be used for other purposes. There are service providers who offer the inexpensive switching of connections under a so-called golden number. These service providers forward incoming calls to the telecommunications system as outgoing calls to other subscribers.

It is achieved by the method according to the invention that a number of switching equipment from the same operator can be included in the call distribution in a simple manner. Until now, this was only possible to a limited extent. The switching technology devices are selected via a selectable identifier, under which the switching technology device can also be selected, for example, directly by a subscriber or would be selectable. The so-called pilot numbers do not have to be made known to the participants and can therefore remain hidden from the participants. The dialed pilot numbers or pilot identification They differ from the bundle names, which are also hidden from the participants and are only used at the level of traffic control, by their function. While bundle names on the level of traffic routing designate switching centers that cannot be dialed directly by participants, the pilot indicators serve to select switching equipment, as if a subscriber himself would choose the pilot indicator. The selected pilot license plate is used instead of the license plate number selected by the subscriber for call distribution. The indicator chosen by the subscriber for dialing the call distribution function is no longer required after calling the call distribution function. By using indicators that can be selected at subscriber level, existing exchanges can be included in the call distribution without changes.

The use of the method according to the invention opens up new application possibilities. If the operator is a so-called Internet service provider, a large number of telecommunication systems can be easily included in the call distribution. Internet access can be offered that has a higher availability than previously offered Internet access.

There are other possible applications for the service providers who forward incoming calls inexpensively. These service providers do not have to accept the limitation of their service by using multiple telecommunication systems. The use of the method according to the invention allows the telecommunications systems to be operated side by side on an equal footing.

In a development of the method according to the invention, the selection process works independently of an identifier of a called subscriber chosen by the calling subscriber. So far, the selection process at ⁾ co t μ>μ> σι o LΠ o cn o LΠ p PJ tD <A rr cd O f-> ü P <CQ P tö PJ <CQ s; CQ rt P. Ό Pϋ PJ rt μ. tö P. P? P. CQ Pϋ μ- 0 Φ Φ O μ- Φ PPP = PJ μ- Φ P Φ P φ Φ Φ Φ Φ μ- φ HP Φ Φ Φ Φ θ = Φ Φ P fV tQ rr μ Ω O μ- CQ P Ω tQ φ H PJ μ- CQ H μ- P H. O μ o Hi CQ Ω P μ- HP μ; Hi Hi

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1 1 1 y

Network level of the telecommunications network as the network level to which the local exchanges belong. The higher network level is, for example, a regional network or a long-distance network. This option is used in particular if the operator's telecommunications systems are distributed over the so-called catchment area of this transit exchange. No subscriber connections or lines are directly connected to the transit exchange itself, on which signals are signaled in accordance with a subscriber signaling protocol.

In a further development of the method according to the invention, the switching equipment is part of a gateway to a data transmission network in which the data is transmitted, for example, in a packet-switched manner. The data transmission network is, for example, the Internet. In this training, the operator is a provider of services in a data transmission network. Such providers are referred to as Internet service providers if the data transmission network is the Internet.

In another development of the method according to the invention, the information provided at the switching equipment, e.g. the telecommunications systems, incoming calls depending on one dialed by the calling subscriber

Identifier of a called subscriber, outgoing calls set up. In this case, the operator of the switching equipment included in the call distribution function is a service provider who offers low-cost call forwarding, for example to a specific country or city.

In a next development of the method according to the invention, if a switching facility of the operator cannot be reached, the operator will be independent of the operator

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P P P Hi Φ rt ff 0 ff μ μ- P co P. Φ P P μ- Φ P H-> rt PJ Hi Φ Φ P Ω μ- P Φ CQ

P P rt 0 = P Φ φ P. μ P. P φ Hl 0 Hi P. P. P P P - rt PJ P ff φ CQ μ- s;

P CQ Φ Hl r P rt Φ P Φ ff CD PP μ- CQ φ Φ to ff <CQ CQ P Φ Q co P ff <Hi H. P 3 φ P CQ ^ μ- φ μ- P. Φ rt t μ 3 Φ φ PJ Pϋ <Hl μ- ff P. J Φ μ- CQ μ- ^f ϋ Pf μ- CQ NN co μ- μ- t? Φ Φ Hi CD P Φ PJ CQ φ Φ rt μ- μ Hi Φ φ rt H {rt P- H {rt tö P ≤ rt φ P Φ 2 P μ- 3 rt CO Hi H {Ω φ

Hi μ- Φ Φ rt PJ Hi μ- P. μ- _^ o μ- Φ 3 Φ Hi μ- • φ CD t rt μ- J <! St. ff

CQ Ω Φ Hi r PPP CQ ODP ⁾ ff tsi CQ PJ ≥! μ- Φ rt rt - φ PJ Φ

PJ = • d ff α P ff φ Hj P. Hj P Φ Φ ϋ Ω <P> -3 PJ to P r. rt rt to μ ff PJ

P μ- PJ • Φ P. Ω O μ- PJ Φ to μ- μ- P ff O Φ PN Φ Φ rt Hi m rr φ μ- rt μ- μ- Q ff Hj φ 3 PJ H {H o Ω Hi φ P φ Ω <3 PP rt Hj Φ Φ Hi CQ

Φ ¹ CQ Φ l rt φ Φ 0 3 P Hl t? W ff £, P μ- φ ff Ω φ P μ- μ- P rt φ

Hj φ Ω PP = P μ- Φ CQ Pf CD rt μ- 2 μ- P φ P. P Pf Hi Φ CQ Φ φ P rr ff <Hi PMP μ- Hi Φ 0 P IS φ P μ- P. μ- Φ 0 Φ 3 μ- CD co co P <! P

• p. φ Φ CQ Hj Φ P PJ μ- 0 3 i ≥! P rt Φ Φ Hi 3 μ- μ- μ- rt CQ • »1 P Φ P CD φ P Hj P. CQ Hi HJ φ 3 P P. PJ P to CQ CQ φ P CQ 3 PP rt Φ rt π CQ Hi P- μ-

O H {J J PJ μ- P 3 φ rt P s: H Φ PJ P CQ rt P Φ Φ 0 co ff Ω

PJ S3 Hj CQ P P 23 V HJ μ- CQ Φ T. μ] Hi P P φ Φ μ- 3 Hi μ- 21 ff

HM μ- ff p. Φ ^for 3 r. co CD Ω μ- tö Φ Φ p. μ- μ- ra PP • d PP Φ μ- Hi H. Φ TJ PJ P μ- H {μ- 0 J Ω CQ CQ X μ- μ- ¹ ^ Φ Pf P φ P tö φ Φ H- ¹ P P . μ- ff

P Hl Pf μ- Hj CQ P rt 0 rt CQ P ff φ <! φ 1 rt φ Φ Hi PJ Φ rt CQ Φ P Φ Pf Φ m Φ μ- P rt O φ CQ φ N Hj CD 3 φ O P Pf φ rt 3 N o μ- PJ rt rt P Φ Hj

N P P 0 CQ Hi φ φ PJ CD J PJ = Hi μ- <! P o Φ P μ- rt co CQ P Pϋ μ- μ- φ

Φ Q ¹ CQ P Hj φ ff CQ μ- 3 Ω PC ⁾ Hi P Φ tQ 3 f O tö. rt • d CQ POO 3 μ- μ- P Φ CQ PJ P. μ- μ- CD P 3 ff CD φ P = Hi 3 OOP Φ Φ μ- φ Hi P_ PO μ- rt QPP CQ 3 μ- PH ¹ 0 Φ CQ P CQ <Hl CQ P 3 Hi Q CD M φ co ff rt CQ φ CQ PJ 3 Φ Φ P. H {Hj Φ μ- φ ff φ Φ P 3 rt PJ Φ μ- Ω CSI Φ P

P Φ P P P φ Hl <J Hi O P μ- P CQ P rr P Φ to ff s: ff μ- Φ P. <!

• • J ff l_l. <! P P. tö rt ta P = Φ H 3 P Pf P <t i P μ- Φ P Φ O

P Φ PJ Hh φ Φ CQ PJ φ ff ff H • μ- rt PJ μ- Φ J rt PJ φ 0 m 1 CQ P. 3 μ,

P CQ P = 1 μ Φ CD 1 PJ = μ- Hj Hi rt N rt Pf Hi CQ Hl P <! μ- CQ Ω Φ J ff

1 Φ Hi 1 P Ω rr J rt rt μ- PJ 1 Φ PJ P. O CQ CO ff Q φ J rt ff ff 1 1 1 φ 3 φ Φ Φ ¹ C ra ii P

1 ¹ 1 P 1 1

ω L co co μ> H cn O cn 0 cn O in

P d P = α CQ rt P = ü> -3 Φ Hi Φ φ Φ CQ N 3 ö Ω CD Pi rt f P.> τ | ^> ^χ l

P φ ff μ- φ P ff μ- 3 μ- P PJ Hi μ- HS Φ Φ Φ μ- J Φ Ω Φ Φ 0 PJ μ- μ- μ-

P. HJ Φ φ 3 P Φ φ P CD μ-> P rt μ- P rt CQ CQ ff P 3 CQ CQ CQ CQ

Hi PJ = CQ ι-s CQ φ Hi PJ. φ Φ Φ Ω rt • d PJ rt rt 3 0 0 P

: ^> U <: CΛ Φ co 0 = CQ PD μ- ff μ> H ι-i Φ P μ] HS HS HS μ- P Φ Φ P Φ Φ to ff r Pϋ PP co P Φ PJ = rt r μ- P Φ

H Hl μ- ü • τf μ- μ H PJ μ <3 Φ 0 IP. φ φ _^ P μ- ¹ Ω Φ • * P μ- H co

P. ff P 3 π P. P 3 o P 0 Φ HS Hi μ- rt CQ Φ ff rt Pf φ

PJ μ- 3 Φ μ- P. P rt <; CQ H CQ Pf CQ P. to PJ Pf N μ- P tA rt 1 CQ tA rt p. φ CQ 3 Φ μ- φ s ^> ιl CQ 0 £. PJ • d rt 0 Φ

3 φ rt> φ et Φ Hi m μ- 3 μ rt μ, Φ et 3 μ- Φ CQ Hj μ- 3 μ- Φ H ¹ Φ

P. μ- o tr ¹ μ- HS Φ ff rt μ- rt J 3 Hi P φ 3 P HS CD PJ 0 3 CQ 0 μ- P μ-

"τ | φ rt P 1 Φ rt PP Φ rt Hi Φ H- ¹ μ- P. P μ- ¹ P P. Ω P 0 rt PPPP

0 HS P P • Ö μ- P P * τl μ- p. μ- φ rt φ P. P φ Φ μ- ff CD P CQ

P CQ H rt P CQ μ- H ra P ra rt P Φ μ- μ- P P f P μ- φ tö CQ> -3

CQ <CQ CQ 0 P CQ CO 3 * d P 0 M P Pf P J Φ Pf μ- φ φ CQ Φ

Φ Φ CD CQ rt P CQ co 3 μ- CQ ö P 1 1 0

PJ φ φ P rt PJ PH μ- rt

P Hi ff rt 0 CQ ff rt PJ m φ co μ- CQ PJ = P ü rr HS α μ- PJ = N rt φ CQ φ φ

P. 3 P = Φ f CQ 0 = Φ CD Φ o ff CQ μ- P- μ- P μ- H Pf> d Pf

Φ μ- PO ff P ^■ φ rt Hi CQ φ PJ OO <φ φ φ μ> O φ O μ- O

P rr p. μ-> P = P. I ¹ μ- ^ Φ <0 IC ^Q CQ Hj PP φ HS P 0 P 3 φ Φ 3 rt Φ Φ P Φ Φ π P φ φ P ^> rt <CQ CD HS <CQ φ | 3

PJ P. <CQ Hi HS f CQ Φ φ Φ P. P ff φ P =, P Pf Φ P

P P μ>, - φ μ> H Φ P. φ 3 et rt HS CQ Φ φ μ- Hi Φ ff Φ Φ 0 P Hi P P

P co co t) o td CD Φ P μ- μ- Φ 3 rt P rr P CD HS Φ HS rt 3 μ- 0 = rt μ-

K CQ o P co 00 ΪA Φ P rt o 3_ Φ μ- Φ Φ N P. Ω ff H {P. t i 3 Pf μ ff Pf

PJ CQ P μ- rt <rt P r P P ff μ- rt φ 0 PJ PJ PJ

P CD 3 P CQ H <CD N ι_l. 0 h- ¹ <rt HP PJ P HS P P. P r P. rt

P. rt μ- Pi Φ 00 Φ rt Ω r Φ 3 P φ i O »rt μ- O CQ" P. PJ Φ μ- μ- μ- rt μ- φ rt ~ P. P HS Φ 3 PP CQ rt P CQ to μ. F O φ Φ OV

P. H ¹ Φ P. n £. ff 3 o H CQ s: HS P CQ Φ JPP Φ • d PJ PPP φ r-> μ- μ- 0 φ P μ- N Ω 3 o Φ CQ μ- 1- P ff P CQ P n σ rt ω Pϋ Φ ra

H Φ P φ p. HS P rt. ff co μ- * s CD P μ- rt ff CQ CD PJ Φ μ- PJ 0 P

P PJ Φ P. P- t rt rt μ- CO CQ ff PJ PJ Ω 0 O P Hi tö φ

P <φ Φ p. • PJ M Φ Φ ^ rt P PJ = P:> P α ff rt P <; J rt

Φ H P. φ s P P Φ 0 23 Hj 3 & Φ ü • d μ- Hi P P. ra ra PJ Φ P N

H {co Φ Hi o. HS <: Ω to rt PJ 1 P. rt ff Hj ff HS PJ Ω P CQ H Φ

3 • - Hj 3 P. Pi Φ ff α φ - to μ- μ ¹ PJ p. PJ Ω rt ff φ Φ rt μ- P μ- μ- P μ- <HS P to ö Φ φ Φ CQ P ff Φ Φ rt P Φ PP rt μ><rt Φ 0 Φ 3 <Pi μι p. μ- φ P • d CQ PPN • μ- ff P- rt d Φ r J Hi HS μ- Φ ω H μ- t? d μ> Pf HS PJ ff Ω -> Φ

HS h- ¹ rt ö 3 rt Hi Φ Φ * Φ SI Φ o P φ Φ £. Ω PJ ff Pi H μ> 0 μ- μ-

P P ff P μ- PJ P. μ- rt 3 μ- M - HS μ- μ- ff CQ PJ 0 Φ 0 P rr P

P P P P O rt φ rt \ -> μ- P -Z ≥; Φ N <! Φ Φ HS>. CQ Φ Q P. P CQ P Φ P rt P rt Φ P φ to Pf μ- <μ- p. p. rt Ω Φ P Φ

CQ P. CQ • - * P H P r μ- P <μ- et CD J Φ Φ Φ Φ t i Φ ff Pf ff PJ * • μ-

CQ H φ CQ φ P CQ P rt HS rt P Hi HS 3 φ <! CD 0 Φ PP rt cn P rt P = ff μ- P co 0 φ μ> φ Ω O Ω 3 N μ- Φ Ω 3 μ- Hi P φ φ Φ ff φ P CQ o P 3 CTι HS P ff ff μ - PJ PJ tö rt HS ff CD PH μ- Φ μ- N 0- rt CQ 0 μ- Φ rt ff P Φ Pf 3 PJ • φ P- D HS CQ Φ D Φ CQ PJ CD 0 P CD μ- PJ rt Hi Φ PJ μ- Ω μ- μ- <3 φ rt Φ rt • d rt CQ P μ- P P. Ω CD CQ PP rt rt Φ P Φ

Hi μ- P Φ rt P. P rt ff O CQ P φ P. PJ = rt Φ φ H { ¹ CQ H PJ φ φ i— ¹ φ Φ Φ P- Φ ^ μ- PO ff Φ »Φ <! H CQ 3 co σι CQ P h- ¹ P HS P 0 Q φ <CQ P 0 P Φ Φ 3 S Ω μ-

Φ Φ ra Φ Φ Φ Hj φ ^j to ra ff rt HS Φ ι-i rt φ μ- CQ P Ξ tA P. φ P ff P P. CQ ra H ra <: φ φ <3 H μ- ff μ- Φ co • £ rt

Hi Ω μ- • Φ Φ H Φ P Φ PJ = Φ rt - rt Φ P μ- Φ d 1

1 ff P μ- μ- lJ CD P ff Φ φ ff φ H {P HS Φ rt φ »d P. co 1 1 Φ 0 P μ- Φ Φ 1 1 Φ Φ φ H. 3 1 1 1 1 ra 1

u J co co μ>

(lo cn o cn o cn α Pf • ö α L 21 Hl rr ff P 3 3 N σ ti μ ^j .> υ <; ISl α tA <

Φ μ- φ P HS μ- 00 Φ Φ μ- φ Φ Φ Φ 0 μ- φ

P Φ Φ HS Φ Φ μ- μ- Φ Φ P PJ =

X φ μ- Hi μ- φ μ- μ- O μ- H HS 3 φ PP HS 0 ü CD φ H CQ μ- HPPJ rt N 3 CQ rt P rt ^ 1 1 rt to CQ ff PN rt CD i Ω rt 3 CQ rt

P $> <3 HS rt CD μ- φ φ Φ 0 <ff 0 μ- CD Φ

CQ S P PJ = μ- Φ P Φ 0

PP ⁾ HS Φ P Hi Φ P) PP φ PJ Φ CD P rt CD μ- Hi Φ Pf P r CD H {

Ω CQ CQ P 3 μ- p. Φ ff Φ> N CD CQ co HS P rr P. N CQ HS 0 0 CQ r rt rt ff Ω Ω P H- "3 P φ Ω Ω Ω 3» d Φ Φ P o PO 3 μ ra ra Φ. Ff | J> ff H- ¹ P P. PJ Φ PP = P ff ff ff μ- Hj H! P co Hj P> μ- N CQ ff P H- ¹

PH co rt Φ PP li P. ff rt H H- ¹ r- ¹ rt 0 <J \ - ^> CQ σ. CQ r φ P = P ö

CQ P PJ μ- ff HS P Φ HS P P 0 rt N Φ Φ Φ o CD tsi rt PJ μ- P CQ Φ μ-

CQ CQ 3 • d 3 Ω P. - P. H. PJ CQ CQ CQ φ HS P p. d Hi P 0 P i co P φ

CQ μ- CQ h- ¹ φ ff μ- μ- P rt CQ CQ CQ P CD ff H φ P 3 0 Ω ff Φ CQ 1

3 H- ¹ rt φ HS φ <! Φ μ- O Φ Φ P CD μ- CO tsi HS

Φ s P P ff φ H rt <J μ- μ | N PJ * rJ o P 3 H μ- μ- <J CQ 0 P. $ μ- f to CQ μ- Φ & φ rt μ- P. Pf PJ PPP rt 3 Φ PP 0 ra HS P. μ- <Hj et rt CQ PJ rt μ> CD Hi rt Φ IP CQ P rt μ- ff ff P CQ 0 to φ P. μ- φ CQ co Ω 3 o P HS CQ Ω Pf CQ P. μ- P φ φ rt CO PP Ω HS 0 P rt CQ o Φ ff μ- φ P Ω ff et Ω φ ff ra ff μ- μ- H Φ. CQ Ϊ70 ff 3 f P Φ Φ co 0 P r

Ω CQ H3 ff Φ ff P HS Φ Φ rt rt Φ Φ Φ Φ μ- PH {t ^ P 1 P rt ff Φ PJ H "P h- ¹ φ Φ μ- φ μ- CQ P Hi P rt Hj i P h- ¹ PJ Pi co μ- ¹

N ^ μ- CQ P = CQ PJ PP HS ff rt co P h- ¹ Φ Ω Pi rt ΪSI Φ Φ Ω P & CD P μ- co h- ¹ Φ C ^Q CQ P CQ CQ CD co P ff N Φ Pi HS p. CQ co co φ PQPC ^Q Φ CQ CQ μ- φ rt ω o Φ H PJ -z 3 Φ P PJ Φ μ> ff Φ o Ω μ- CQ ff φ ff Φ μ- Φ Φ P μ- *. μ- co ff o μ- PPP <Hj to Φ co ff P CD fe! μ- ff Φ PP P. μ- et f ra 3 rt ra μ- ¹ CQ Ω φ tj Ω ra ff ra

P 3 N ff Φ P l CQ Φ J rt P φ φ Φ Ω P ⁾ CD ff H <φ Φ ff μ- P φ rt rt P. Φ Φ φ P ff μ- μ- PP HS PP ff CQ & CD 3 φ P μ- P CD μ- Φ tsi φ Hi μ- td μ- rt φ CQ NP CQ 0 = P. P rt φ CQ CD rt PJ μ- HS rt Ω o p. CD rt f rt J Ω μ- rt Φ μ- PP φ Φ ff ff P φ Ω Φ rt 3 ff ff ra Φ Φ

PJ P ff P rt rt HS 3 CQ Φ) PJ = P ff CD rt μ- PJ = P CD PJ μ- P Φ

P Φ CQ P Φ ω • <! Ω HS o H P. rt Φ φ P P

PJ = μ- Ω Φ o co H S Φ ff P rt Φ ra P φ t i P rt rt rt P ff H

P ff rt H rjo HS ¹ Φ P. P μ- CD t. P • P. φ <co

Φ Φ ^ Φ P. Φ CQ 3 O μ- PJ • fl 3 Ω CD H CQ 0 J ^ μ- μ- O

PPP μ- ¹ μ- PJ μ- Ω μ- ra P HS μ- φ ff Φ o ff CD P 0 tr ¹ a μ- α φ rt P Φ

• r Φ Φ P P ff rt ra CD CQ CQ ff & μ- Φ ra CQ CΛ μ- μ- P

N CQ ra ^ P CQ rt φ φ P HS CQ P = P P. tsi rr CD φ P φ <o P. rt td s Φ r 0 rt Φ 3 PP CQ HS φ Ω ff ff μ- Φ Φ Hi HS Φ φ co Φ ff μ- Φ μ- 3 CQ Φ CD 0 & rt HS ff Φ φ Φ μ- 0 Pi e Hi P PJ =

P μ- P P = 3 N Ω μ- CO P ra Φ Φ H {μ- P Ω P Φ 3 P. Φ φ Hi ff ff P P ff CQ α Ω P rt rt ff φ Pf 3 HJ CQ μ- PJ P rt

P ⁾ φ Φ P 3 P Φ CD μ- ff CQ CQ P. φ P er 0 Ω rt Hj

≥! Ω μ- H μ- 0 Φ μ- rt Φ rt μ- & CD PJ P N φ H μ- Φ P ff rt CQ μ-

Φ 3 ff rt 3 CQ ff P Φ P. P CQ Φ co P rt CO 0 μ- Pf H Φ P Φ rt Φ Φ PJ Et CQ 3 φ Ω! ! CD P. Ω μ- P. 3. • P P 0 P CD ff

N P ω μ- rt CQ Φ φ HS ff O CO ff P o m Φ Φ Φ Ω CQ P rt * τl Hj

P = P μ- Ω P H. PP & N μ- ¹ ff J HS to ts ö PP Hi m CQ Φ μ- Φ ff TJ Φ 0 ff Φ <3 μ- tsi Φ 3 P Φ P Ω μ- Φ O φ CD CQ H {

Φ HS <! P H μ- CQ φ μ- P- φ CQ μ- • d <3 ff P ^ 0 tsi 0 μ- CD P Φ

HS μ- φ CQ P tö h- ¹ φ Ω P et μ- μ- CQ rt rt φ JP φ> d P rt rt HQ 3 Hi PJ CQ PJ Pf HS I- ¹ üϊ P. P ^• - - ff Φ < J

PJ PJ. ff o P CQ P 5 ff rt P φ Φ Φ

N φ HJ P ^ μ- P 0 3 rt PJ φ rt • φ H μ- μ * Φ

P HS P Ω H CQ PJ P PJ tQ] φ P • d μ- Φ P P P. HS μ- CQ H Q 3 P ff PJ <! Hj P. ff rt Φ μ- ff P • d rt P W rt Φ J rt φ rt Φ 3 ra P p. CQ O P PJ ^ O ω μ- φ P Φ rt rt Hj Hj P. μ- μ-

Φ Φ P Φ P Ό n 0 HS o P μ- P. 1 <! f PJ • d o P rt μ- rt P CD> Ö CQ <P Φ P Φ rt P 0 0 Pϋ Hj o ö Φ rt

P μ- CQ M5> Φ Φ 0 f μ- Φ Φ ff Φ Φ P ^f d 1 0 0 μ- 1

1 • d 1 σ P 1 P 1 P μ- ff 1 P Φ rt 1 Hh 1 φ

1

1 1 3 tsi

o tsi H to V σ H 3 HPP Pϋ s; "τl μ <Ω V 23 ⁽ -3 Φ φ <Pf ö Pf Q tö ι-3 Φ» J ff

P s; Φ 0 μ-> μ- o μ- O μ-): P μ- 0 μ- P Φ ff P Φ Φ μ- P φ O Φ O HS φ φ Φ »P φ

CD μ- μ- ¹ 3 Φ φ 00 rt Φ »ff 3 hh Hj P CQ P μ. Φ P μ- - ¹ P rt Hj 3 0 3 0 rt CD μ-

PJ CQ φ μ- X rt J μ-> Φ Pi CQ P CQ Hi n f rt Φ ff ff 3 3 et 3 (J HJ Φ ff Ω rt

P Ω Pf rt JH ff μ- rt μ- P CQ HS J φ et Φ Pf Φ P) = μ- 0 CD P Φ Φ Pf μ- ff ff OP φ PJ 0 CQ μ- Ω Hi P. ff μ- φ HS 0 μ- rt P Ω PP μ- 0 φ. ⁾ Φ 3 CD co rt P rt O ff PJ α 0 co Φ Hj P φ 3 rt rr rt μ- ff μ- ff 3 Pi 0 Φ »

CQ P 3 μ- Ω Φ CQ PP μ- P Hj Φ ff PJ 3 Φ H ¹ Pf H Pf IT] φ φ CD

Φ 0 P ff Pf LO CQ 0 = CQ J φ Pf N P φ P td 0 P P. P PJ PJ PJ μ- HS rt CD μ-

Pi P P. 0 o CQ ff J P φ et φ Pϋ CD μ- Q μ- P J P rt P rt H {co Ω Φ ω

Φ> Φ μ- P 3 rt φ P μ- ϋ μ- μ- P rt Φ P μ- N CQ CQ μ- P. μ- 3 P. μ- rt o Hj f J co 3 <υ Φ Hj P. P 0 0 CQ Hi t J ^• > P. ff f 0 CD 0 0 PJ ff P Φ P

PJ 0 CD P n J μ- φ Hi P rt <P Φ φ PJ CD P ≤ P - • tsi P P ff 0 =

CD <rr Ω P 3 Φ CQ φ <φ Hj μ- P μ- rt P. Φ rt CD ff CD P. φ ff μ- φ μ- ff μ> μ- 1 Φ μ- Φ Ω Φ H Φ Hj P rt rt μ- Φ Φ P φ P ff • ≥i μ- Φ

P HS o H Pf ≥i PPH HS Hj o μ- rt iA Φ φ O 3 Φ φ Hj φ Φ Φ Φ rr HS p. 3 PN o PJ 0 H φ φ 0 rt o P Φ Φ Pi rt PP Pf rt rt μ- φ μ- rt μ- ra £ r et Φ> P • d Φ _^ φ μ- μ- φ • CD ι-3 o Φ N φ tsi co μ- PN co φ rt J μ- 3 μ- tSJ O Φ d μ- h- ¹ rt HS σi P Φ 3 P μ- Φ <τ3 P Φ 0 = o μ-

≤- rr P ra μ- 0 Pf <h_ι Φ> f Φ PP P ^ to co φ h- ¹ 3 cn P μ- φ 3 ff P μ- -> Ω rt P PJ Φ HS O 0 μ- PP Φ P o - rt Φ PP o Φ μ- ¹ φ co Φ PJ Φ φ PJ ff ω P HS μ- 0 3 μ> P φ HS CQ CQ p. N f PP PJ> -3 ü P

P CQ Φ P. PJ pj. ff 3 P 3 o CQ Ω CD CQ PJ tQ Φ Φ O μ- P. Φ 3 CD CD V Φ CQ CQ ff CQ φ P Φ P 0 PJ-- P. P to ra <ff Hi rt • μ- HP 3 Pf P μ- CD - HS J φ φ CD HS * Φ PH {P Hi 0 P Φ σ. 3 PJ PJ rt rt φ φ μ- Φ P CD C BQ

HS ω μ> P. PJ P. 3 H μ- PJ 0 P Φ P 0 φ rt <! 0 rt P ff P μ- <! Pf CQ Ω Ω φ rr σ φ <! CQ _^ - _^ φ 0 σ f 0 P μ- Pf Φ μ- φ P μ- Ω PJ = =: Q PJ O ff ff μ- Φ σι HS φ Φ> υ P μ- ¹ σι PJ co Pf P. P et Hj P φ HS μ- 0 ff O CD φ rt 3 N rt H 0 rt • rt et φ Φ μ- 0 CD 3 f P rt H μ- Φ 3 $, o £

CQ i <! 3 H μ- μ- P. μ- Hi P 0 P V μ- J ra o Ω P. P 0 μ- ra ra

Φ HS Φ μ- o CQ α * d α O Hi 0 PQ HS ff rt rt P Φ CD =: ff φ P ra CD CQ φ Φ HS rt CTl Φ Φ μ- P Φ P <: -J 0 φ rt μ - Φ μ- Φ Hj H μ- Ω Φ

HS H μ- 3 rt Hj φ φ ra μ- Φ Hi CQ 0 CQ μ- t-> O rt μ- ff PJ Φ Pf ff P φ

$, CO tΛ μ- μ- π X PJ μ> Hi Φ Φ P HS co P P tsi P P Φ P <PJ φ μ-

PJ = μ- rr P CQ 0 T) PJ • -3 P μ o 3 μ- CD P. PJ> d P CQ φ Φ CQ Ω td Φ rt P rt ff 0 CQ rt P rt p. Hj P Φ φ o μ- "d 3 μ- CQ P cn ff Hj μ- ff t Pf μ- ö 0

PP CQ Φ μ- D PJ h- ¹ rr φ Φ 3 φ CD φ o 3 o P o O P. μ- P rt P. ≥! P CQ P = 3 Ω φ CQ φ p. rt p. μ- μ- co rt φ Φ P P. 3 P φ φ CQ

~ 0 P co ff 2 PJ = ff Pf Φ Pf μ- PJ Ω P tsi CD rt N Hj μ- Φ μ- 3 D 3

P. rt CQ rt Φ 0 Hi 0 o φ 0 HS ff P z Φ Φ PJ rt P Hj Ω PP ≥! Φ> cn φ tsi ra Φ Hi P. 3 P 3 Φ> 3 PP CQ Φ -ι 3 φ H μ- P CD p. φ • P Φ ≥! φ

o HS Pf CQ 0 0 CD 3 o 3 rt cQ Φ Hj HS μ- o rt CD Φ Pf μ- rt Φ rr J rt φ \ - ^j CQ 0 0 CQ CQ rt O m φ Φ Ω P rt ü Pf N rt NJ

^ P Φ Φ μ- PJ rt P P P N CO rt CQ P Φ 0 HS ff μ- <! μ- PJ N 0 = P

PJ φ PJ = P rt μ- μ> μ- P μ- 0 rt Φ CQ Hj CQ H P. Φ h- ¹ Ω 0 J φ rt U1 ff

PH Φ μ-> do Pf P. Pf 3 Φ {-> μ- P ⁾ Hi Φ CO Φ 0 = ff Hi P μ- o μ> Φ P.

P): φ Φ φ σι P 0 co PJ PJ P 3 P = μ- HS ≥! CD rt 3 • d 0 o HJ μ-

Pf P _^ φ rr PJ rt rt P. 3 ff P CD Φ CD PJ PJ = H {P Φ CQ Φ φ 0 <! μ><n_t X 3 μ- P μ- Φ φ Φ H {φ μ- tsi rt Φ P. ff ff μ- CD μ- P. PJ

3 Φ Oϊ Φ H {• PJ μ- OO Hj N Φ P 0 N. PJ μ- ¹ H- ¹ <JPP Φ P H3

N 3 Hj Hj μ- P rt P H P rt M Pϋ 0 P to P- P = H {. Φ PJ φ φ H {CQ Φ

0 0 Hi P ff 3 CQ CQ Φ co Φ CO P HS • d PJ ff> CQ P rt rt CD co μ-

3 P 0- "PP PJ-- Ω P. PJ PJ μ- Hi Φ Φ i P Φ 0 Φ O φ tsi ü φ \ -> μ- CQ P. P HS ff Φ P Φ P Φ <J μ- μ - 0 i HS tΛ CD PJ P φ ⁾ Φ μ- P = Pf ff i 3 HS ff Φ Hi Φ 0 P 1 HS φ CQ Φ rt CD N CD P 0 P Φ tr PJ PJ P. Φ 0 0 PJ o JP ff μ m φ Ω Hj JH Φ • 3 P- rt ff ff

HS rt HS φ P μ- ¹ CQ <! cQ 3 CQ H {rt Hi CD ff Φ P P. H tö Φ Φ Φ D φ 3

Hj μ- Hj • rt CD Φ Φ 3 Φ <! J Φ 0 = P CQ Φ H- "φ • H ¹ μ- Hj Ω μ- Φ

1 1 μ- H {P P O Ω μ- ff ra 3 er Φ P Φ ff rt Hj

1 1 P ff 1 1 1 Φ Φ μ- 1 φ P Φ 1 rt 1 P HS P

can carry voice data because there is a double primary multiplex connection between the exchange 12 and the telecommunication system, see connecting line 42.

The telecommunication systems 40 and 104 are connected to one another via a cross line 112, and the telecommunication systems 40 and 106 are connected to one another via a cross line 114. Signaling messages are transmitted on the cross lines 112 and 114 in accordance with the QSIG protocol. In addition, voice data can be transmitted on the cross lines 112 and 114 between the telecommunications systems 40, 104 and 106.

In the telecommunications network 10, all routing tables are set up in such a way that when a dial-in number EN is dialed, the call automatically arrives at the call distribution function 100 and is distributed by it, see arrow 116. The call distribution function 100 is activated when a program contained in the switching center 12 is executed provided.

Percentage specifications PI, P2 and P3 have been specified by a network maintenance center, and in this order the proportion of the channels of the primary multiplex connection 108, the connecting line 42 and the primary multiplex connection 110 to the total number of channels leading to the telecommunications systems 40, 104 and 106 of the group 102 Channels. Thus the percentage PI has the value 25%, the percentage P2 the value 50% and the percentage P3 the value 25%.

If the dial-in number EN is dialed, the call distribution function 100 selects a pilot call number PN1 from the telecommunications system 104 and forwards a call by dialing the pilot call number PNl via the line bundle 18, the local exchange 14 and the primary multiplex connection 108 to the telecommunications system 104. The two following calls are made by selecting a pilot number PN2 of the telecommunication system 40 via the connecting line 42 forwarded directly to the telecommunications system 40. The next call is forwarded by the call distribution function 100 by selecting and dialing a pilot number PN3 for the telecommunications system 106 via the trunk group 20, the switching center 16 and the primary multiplex connection 110 to the telecommunications system 106. This type of call distribution is then repeated cyclically for the other incoming calls.

In another embodiment, the call distribution function 100 is in a transit center at a higher network level. No telecommunications systems are directly connected to the transit exchange. Otherwise, the call distribution function 100 remains unchanged. Each call is counted as an event that requires the selection of a pilot number according to the selection scheme just explained.

In another exemplary embodiment, network gateway units are used instead of the telecommunication systems 40, 104 and 106, which have the same function as the network gateway unit 44. Depending on a number dialed by the calling subscriber after the dial-in number EN, then another telecommunications cation network, e.g. of the telecommunications network 50, a connection is established.

In another exemplary embodiment, the call distribution function 100 is changed depending on the time of day. There are percentages PI to P3 for each time of day, which differ from the percentages PI to P3 for other times of day. LIST OF REFERENCE NUMBERS

10 telecommunications network

12, 14, 16 switching center 18, 20 trunk groups

22 Exchange connection unit

24 central processor

26 main switching network

28, 30 subscriber connection unit 32 connecting cable

34 concentrator unit

TlnA participants

36 subscriber line 38 modules 40 telecommunication system

42 connecting cable

44 gateway unit

46 connecting cable

48 telecommunications systems or gateway units

50 telecommunications network

52 more units

ZP central processor

VST exchange LTG connection unit

100 call grant function

102 group

104, 106 telecommunications system

108, 110 primary multiplex connection 112, 114 cross line

EN dial-in number

PI to P3 percentage PNl to PN3 pilot number

Claims

claims

1. Method for call distribution in a telecommunications network (10),

in which a call distribution function (100) is carried out on the basis of an identifier (EN) chosen by a calling subscriber (TlnA),

in which the call distribution function (100) selects an identifier (PNl) from at least two identifiers (PNl to PN3) according to a selection process, among which switching equipment (40, 104) from the same operator can be selected,

and in which, using the selected identifier (PNl), the call of the calling subscriber (TlnA) is forwarded to the switching equipment (104) that can be reached under the selected identifier (PNl).

2. The method according to claim 1, characterized in that the selection process is independent of an identifier of a called subscriber selected by the calling subscriber (TlnA).

3. The method according to claim 1 or 2, characterized in that the number of access channels to the switching equipment (40, 104) is included as a criterion in the selection process,

and that the calls are distributed according to a percentage ratio that is equal to the ratio of the access channels to one another.

4. The method according to claim 3, characterized in that the selection process is carried out regardless of the duration of the distributed calls.

5. The method according to any one of the preceding claims, characterized in that the call distribution function (100) is provided by a local exchange (12).

6. The method according to claim 5, characterized in that connected to the local exchange (12) included in the call distribution function switching equipment (40, 104) with most access channels to the telecommunications network (10).

7. The method according to claim 6, characterized in that at least one further switching equipment included in the call distribution function is connected to the same local exchange (12) or to another local exchange (14, 16).

8. The method according to any one of the preceding claims, characterized in that the call distribution function in a transit exchange on a higher network level of the telecommunications network (10) than the level to which the local exchanges (12 to 16) belong, is provided.

9. The method according to any one of the preceding claims, d a - characterized in that at least one switching equipment (44) are part of a gateway to another telecommunications network (50) or to a data transmission network.

10. The method according to any one of the preceding claims, characterized in that at least one switching equipment to one from the telecommunications cation network (10) incoming call depending on an identifier chosen by the calling subscriber (TlnA) of a called subscriber builds an outgoing call into the telecommunications network (10) or into another telecommunications network (50).

11. The method according to any one of the preceding claims, characterized in that when a switching equipment (40, 104) is unavailable, overflow processes between the switching equipment (40, 104) for call forwarding work independently of the call distribution function (100) be used.

12. The method according to any one of the preceding claims, d a - characterized in that the call distribution function (100) is carried out automatically.

13. The method according to any one of the preceding claims, characterized in that the switching equipment (40, 104) are connected to the telecommunications network (10) via multiplex connections (42, 26), each of which is used to transmit a plurality of transmission channels.

14. The method according to claim 13, characterized in that at least one switching device is a telecommunications system (40, 104, 106) and / or a gateway between telecommunications networks (10, 50) of different operators.

15. Program with an instruction sequence, when executed by a processor (24) a method according to one of the preceding claims is carried out.

16. Exchange (12), characterized by a program according to claim 15.

17. Data processing system, g e k e n n e e i c h n e t d u r c h a program according to claim 15.