EP1514448A2

EP1514448A2 - Method, communication system and communication device for transmitting information

Info

Publication number: EP1514448A2
Application number: EP03759830A
Authority: EP
Inventors: Norbert Boll; Thomas Gemmer; Georg Hein; Reiner Kolsch
Original assignee: Siemens AG; Nokia Siemens Networks GmbH and Co KG
Current assignee: Nokia Solutions and Networks GmbH and Co KG
Priority date: 2002-06-14
Filing date: 2003-06-04
Publication date: 2005-03-16
Also published as: WO2003107598A2; DE10226637A1; CN1663318A; WO2003107598A3; US20050254487A1; US20060023736A1

Abstract

Information (cell) that is to be transmitted at least partially via a packet-oriented communication network, e.g. Ethernet (IEEE 802.3) (EN) or via a cell-oriented communication network is inserted as useful information (data) into a useful data field (nf) of at least one data packet (dp) of the communication network (EN), which contains target and useful data respectively (DA, data), or into a time slot of the time-slot oriented communication network. According to the invention, additional routing information (ri) for the transmission is assigned to the information prior to insertion into the data packet (dp) or time slot, whereby the information (cell) that has been sent with the data packet (dp) or time slot to a destination in the packet- or cell-oriented communication network is transmitted in accordance with the respective assigned routing information. The invention permits information cell(vc1), cell(vc2) that is to be transmitted via different connections to be transmitted cost-effectively and transparently via a packet-oriented communication network (EN).

Description

description

Method, communication arrangement and communication device for transmitting information

As part of the optimization of current communication networks, in particular broadband subscriber access networks - also known as access networks - large numbers of subscribers should have inexpensive access to broadband services - e.g. Video-on-demand - to be ensured. One way of optimization is to distribute the facilities and resources (e.g. bandwidth and processing speed) provided by the subscriber access networks to as many subscriber lines as possible. Another option for cost optimization is to arrange the intelligent functions required for current data services largely centrally in the subscriber access network, so that, for example, the subscriber line modules arranged in the communication network or in the respective network devices have to be equipped with as little functionality as possible.

Furthermore, the technological and economic outlay for realizing network devices which can be arranged in current communication networks can be reduced by using technologies which have not been developed specifically for broadband subscriber access networks but for mass markets (eg personal computers). An example of such a widespread and correspondingly further developed technology is the “Ethernet *” standardized according to the IEEE 802.3 standard, which provides a frame- or packet-oriented and connectionless transmission method. In network devices that can be arranged in current communication networks, such as, for example, multiplexer devices (for example DSLAM, digital subscriber line access multiplexer), it is known, for example, according to the asynchronous transfer mode - ATM - configured data cells - also referred to as ATM cells - via an Ethernet located locally in the network device to convey subscriber line modules arranged in the network device and at least one central unit or module having the central functions. The Ethernet can be used both as "wiring * or" backplane ^λλ in a subrack for bridging ^short distances as well as a nationwide communication network for bridging larger distances.

For example, the publication "ATM ^" Forum, Technical Committee, Frame-Based ATM Transport over Ethernet (FATE), AF-FBATM-0139.00, February 2000 * describes a method by which ATM cells are transmitted via a communication network designed as an Ethernet The disadvantage is that the method described is limited to ATM connections of type AAL 5. This method can therefore only be used to a limited extent in current and future subscriber access networks, since ATM cells of all AAL types are used in these when realizing current data and communication services As a further disadvantage of this method, only the useful information of the respective ATM cells to be transmitted via the Ethernet is inserted into the respective useful data field of the Ethernet frame, which requires preprocessing of the ATM to be transmitted which is associated with technical outlay Cells makes it necessary transparent transmission of the ATM cells via the Ethernet is not possible. The invention is therefore based on the object of improving the transmission of ATM cells via a packet- or time slot-oriented communication network and, in particular, of creating a subscriber access network in which ATMs which have different AAL types and in some cases are associated with different ATM connections. Cells can be transmitted using a packet- or time slot-oriented transmission technology, in particular using Ethernet transmission technology. The object is achieved on the basis of a method according to the preamble of claims 1 and 2 by the characterizing features thereof. Furthermore, the problem is solved on the basis of a communication arrangement according to the preamble of patent claims 11 and 12 and on the basis of a communication device according to the preamble of patent claims 18 and 19 by the characterizing features in each case.

According to a first embodiment of the method according to the invention for transmitting information, the information to be transmitted is inserted as useful information in a useful data field of at least one data packet of a packet-oriented communication network. Furthermore, target information is inserted into the at least one data packet. The essential aspect of the method according to the invention is that additional information for routing is assigned to the information to be transmitted before insertion into the useful data field of the at least one data packet. The at least one data packet and the information inserted therein together with the respectively assigned routing information are transmitted to at least one destination represented by the destination information of the data packet in the packet-oriented communication network. The information transmitted to the at least one target is depending on the assigned routing information.

According to an alternative embodiment variant of the method according to the invention, the information to be transmitted is inserted as useful information in at least one time slot of a time slot-oriented communication network. The essential aspect of the method according to the invention is that the information to be transmitted before

.0 insertion in the at least one time slot each additional routing information for forwarding are assigned. The at least one time slot and the information inserted therein, together with the respectively assigned routing information, are sent to at least one destination in time.

L5 slot-oriented communication network transmitted. The information transmitted to the at least one destination is relayed as a function of the respectively assigned routing information.

The main advantage of the method according to the invention is that the disadvantages mentioned at the outset of the method resulting from the FATE standard are avoided. In contrast to the method described in the standard, the information to be transmitted is transmitted transparently via the 5 packet- or time slot-oriented communication network, so that the technical and economic outlay for preprocessing the information to be transmitted can be saved. Information transmitted by means of transparent transmission over different connections, but via the same destination in the packet-oriented communication network, can advantageously be inserted into one or more data packets or time slots of the packet- or time slot-oriented communication network. Furthermore the method according to the invention is not specific

Connection type - such as restricted to AAL type 5 ATM connections. As a further advantage, at the respective destination in the packet-oriented communication network, the storage of additional connection information required for the forwarding of the information, which is associated with a high level of economic and technical complexity, for example for “policing * and“ queuing ”, is not necessary.

According to an advantageous embodiment of the method according to the invention, the information transmitted to the destination in the packet or time slot-oriented communication network is reproduced as a function of the routing information and the reproduced information is subsequently passed on. This advantageous embodiment enables the almost simultaneous or parallel forwarding which enables information transmitted to the destination to, for example, several subscribers - implementation of multicast or broadcast connections in the direction of the subscriber.

The packet-oriented communication network is advantageously designed in accordance with the IEEE 802.3 standard - claim 9. Such communication networks based on Ethernet technology are designed for the mass market in the area of local networks - LAN - and are therefore cost-optimized. With the help of Ethernet technology, communication networks arranged locally in a network or communication device can thus be used as inexpensive wiring of, for example, assemblies - “backplane”.

Further advantageous refinements of the method according to the invention as well as a communication arrangement and a communication Nicationseinrichtung for performing the invention

The method can be found in the further claims.

The method according to the invention is explained in more detail below with reference to several drawings. Show:

1 shows an application scenario arranged in a subscriber access network in which the method according to the invention is used,

2 shows two frame formats defined according to the Ethernet standard IEEE 802.3,

3 shows an ATM cell expanded in accordance with the method according to the invention with additionally assigned routing information,

4 shows an Ethernet frame formed according to the method according to the invention with expanded ATM cells inserted therein.

1 shows a communication device or multiplexer device DSLAM arranged in a subscriber access network or access network ACCESS configured according to the asynchronous transfer mode ATM, to which via several connection units AE1 ... Z and via several subscriber connection lines TLN1 ... N or TLN1 ... K the respective participants - not shown - are connected. Arranged in the DSLAM communication device is a packet-oriented communication network EN, which is designed in accordance with the IEEE standard 802.3 and is also referred to below as “Ethernet *”, via which the respective connection units AE1... Z are internally connected to one another. With the Ethernet EN, another is central to the Communication device DSLAM arranged unit PACK connected. Both the connection units AE1 ... Z and the central unit PACK are each assigned an Ethernet MAC address macl ... x ... z (MAC, Medium Access Control) that uniquely identifies them within the Ethernet EN.

The central unit PACK is connected to a first input EDI of the communication device DSLAM via a first input EP1 and via a unit SAR for performing segmentation and reassembly functions. A first higher-level communication network KN1, for example also configured in accordance with the IEEE standard 802.3, is connected to this first input EDI.

The central unit PACK arranged in the DSLAM communication device has a second input EP2, which is connected to a second input ED2 provided in the DSLAM communication device. According to the application scenario, a further higher-level communication network KN2 configured according to the asynchronous transfer mode ATM is connected to this second input ED2.

The subscribers connected to the DSLAM communication device are connected to the two higher-level communication networks KN1.2 via the respective connection units AE1 ... Z, via the Ethernet EN and via the central unit PACK. Control means CONT for carrying out the method according to the invention are provided in the respective connection unit AE1 ... Z and the central unit PACK.

For the exemplary embodiment shown in FIG. 1, it is assumed that starting from a communication device originating in the first communication network KN1 - not shown - Information about a virtual connection - shown by a dashed double arrow vcl in FIG. 1 - about the central unit PACK, and about the first connection unit AE1 to a communication device connected to the first subscriber line TLN1 - not shown

- be transmitted. Furthermore, assume that, starting from a in the second communication network KN2 ^{'communication} means arranged about a second virtual connection - shown in Figure 1 by a strichliierten double arrow vc2 - via the central unit PACK and via the first connection unit AE1 to one of the n te subscriber line TLNn connected communication device - not shown - are transmitted. The information transmitted from the first communication network KN1 to the DSLAM communication device in accordance with the Ethernet transmission method is transmitted to the SAR device via the first input EDI. Functions arranged in the SAR unit segment the transmitted information according to known SAR methods and convert it into ATM cells. The ATM cells cell (vcl) formed are forwarded to the first input EP1 of the central unit PACK. The information or ATM cells cell (vc2) transmitted from the second communication network KN2 are transmitted directly to the second input EP2 of the central unit PACK via the second input ED2 of the communication device DSLAM

It should be noted that any data or information streams from differently configured communication networks are brought to the DSLAM communication device and - after a possible preprocessing by the SAR unit - can be relayed as part of the method according to the invention. The method according to the invention is described in more detail below.

The method according to the invention is based on the frame-based ATM over Ethernet standard (FATE) of the ATM forum cited at the beginning. In contrast to the method described in this standard, however, complete, i.e. transmit an ATM cell with a target and user data field with 53 bytes of data, which can be assigned to different virtual connections - here vcl, 2. Furthermore, the method according to the invention is not limited to AAL type 5. According to the invention, the ATM cells arriving at the DSLAM communication device or at the inputs EP1.2 of the central unit PACK and to be relayed to the subscribers connected to the DSLAM communication device are inserted into the user data field or payload field by the control or insertion means CONT Ethernet frame of the Ethernet EN arranged in the communication device DSLAM inserted. An Ethernet frame can contain 1 to n data or ATM cells, the number of inserted ATM cells being limited only by the maximum possible length of an Ethernet frame according to the standard. By default, the normal length of an Ethernet frame is set to 1536 bytes. However, this length can be extended in certain applications.

Before the insertion into the user data field of the Ethernet frame, each of the ATM cells cell brought up to the two inputs EP1, 2 of the central device PACK is an additional information field zf for inserting additional ones for the relaying of the ATM cells outside as part of the method according to the invention of the Ethernet required Routing information ri added. 2 shows the format of an ATM cell ecell which has been expanded in this way. In this exemplary embodiment, the routing information ri that can be inserted in the additional information field zf means that a specific subscriber line TLNl ... n, TLNl ... k connected to one of the connection units AE1 ... Z or a multicast identifier - ie a numbering for a multicast or broadcast connection via a plurality of subscriber lines in the direction of the respective subscribers - identified, the routing information ri in this exemplary embodiment having a data length of 8 bits.

Furthermore, information n representing the number of ATM cells or expanded ATM cells ecell inserted in the respective frame dp is additionally entered in the useful data field nf of each Ethernet frame dp.

To identify this particular type of Ethernet frame used in the process according to the invention, a new type identification - hereinafter also referred to as “ether type *” - is introduced. The introduction of this new "ether type" ensures that the Ethernet frames transmitted via the Ethernet EN are processed correctly.

For historical reasons, the Ethernet standard IEEE 802.3 defines two different frame formats, the respective frame format being determined by the value of the first two octets following the address fields or address information DA, SA (see FIG. 3).

If the value of these octets is greater than 0x0600 (corresponds to the decimal value of 1536), this field is entered as a type field. interpreted - referred to as “type *” in FIG. 3a. The meaning of the individual fields of the frame format dp shown in FIG. 3a is listed below.

Frame shape 1:

■ DA: the destination MAC address (6 octets of data)

■ SA: the original MAC address (6 octets of data)

■ type: the newly introduced "Ethertype * (value: TBD) *, by which the format of the subsequent data field nf is determined (2 octets of data)

■ data: the payload of the Ethernet frame consisting of:

1.Length identification n (1 to n extended ATM cells ecell) 2.n * ATM cells ecell with additional information field zf, i.e. with additional subscriber line or multicast / broadcast identification

■ FCS: the "frame-sequence-check * (4 octet data volume).

Frame format 2:

If the value of the octets following the two address fields DA, SA is less than 0x0600, this field is interpreted as a length specification for the subsequent data - referred to as “length *” in FIG. 3b. The individual fields of the data frame dp shown in FIG. 3b have the following meaning:

^■ DA: The destination MAC address (6 octet data volume)

^■ SA: The original MAC address (6 octet data volume)

^■ length: the length of the subsequent data field (2 octets

Data size) ■ LLC: the 802.3 header that follows immediately

SNAP header specified (3 octet data volume)

■ SNAP: this header identifies the following user data field nf (5 octet data volume, including the "Ethertype * field")

■ data: the payload of the Ethernet frame dp consisting of:

1. Length identification n (1 to n ATM cells)

2. n * ATM cells ecell with additional information field zf, i.e. with additional subscriber line or multicast / broadcast identification

■ FCS: the "frame-sequence-check * (4 octet data volume)

As already explained, the data frames dp shown in FIG. 3 and used in the context of the method according to the invention are identified accordingly by the “ether type * field. This marking indicates to the processing routines or control units CONT arranged in the Ethernet EN that at least one ATM cell cell is contained in the user data field nf of the Ethernet frame dp transmitted to the destination, which transmits correspondingly according to the routing information ri arranged in the additional information field zf must become.

As shown in FIG 1, the two virtual connections vcl, 2 are made via subscriber lines TLNl ... n, which are connected to the same connection unit - here AE1. Thus, according to the invention, a certain number n of the ATM cells cell (vcl), cell (vc2) brought to the central unit PACK via the two virtual connections vcl, 2 can be entered into the useful data field nf of the Ethernet to be transmitted via the internal Ethernet EN Frame dp one be added, whereby the first connection unit AE1 is addressed by the destination MAC address DA arranged in the Ethernet frame dp - DA = acl. An additional information field zf is added to each of the inserted ATM cells cell (vcl), cell (vc2). This additional information field zf addresses the respective subscriber line via which the respective ATM cell cell (vcl), cell (vc2) is to be transmitted. According to FIG. 1, the ATM cells cell (vcl) to be transmitted via the first virtual connection vcl, information that identifies the first subscriber line TLNl is inserted as switching or routing information ri into the additional information field zf - ie ri = TLNl. Correspondingly, the ATM cells cell (vc2) to be transmitted via the second virtual connection vc2, an information identifying the nth subscriber line TLNn is inserted as switching or routing information ri into the additional information field zf - ie ri = TLNn.

4 shows, by way of example, the Ethernet frame dp formed in accordance with the previous explanations, with ATM cells cell (vcl), cell (vc2) inserted into the useful data field nf and associated with the two virtual connections vcl, 2. As an example, it is assumed that the value of the two octets - = ether type * - following the address fields arranged in the Ethernet header is greater than 0x0600, so that the frame format corresponds to the format shown in FIG. 3a. According to FIG. 4, an expanded ATM cell ecell (vcl) assigned to the first virtual connection and an expanded ATM cell ecell (vc2) assigned to the second virtual connection are inserted into the useful data field nf of the Ethernet frame dp. It should be noted that according to the Ethernet standard, any number of far Erten ATM cells which can be assigned by virtu ^¬ economic compounds of any number, are in the user data ^¬ frame nf inserted - illustrated in FIG 4 by a dotted line - one being the number of inserted ATM cells or pasted expanded ATM Information n representing cells is inserted into the user data field nf of the Ethernet frame. In two successive ether ^'frame net- dp, the number n of the frames in the Ethernet payload fields nf each of dp inserted ATM cells or pasted expanded ATM cells different.

According to the exemplary embodiment, the Ethernet frame dp formed in the central unit PACK is transmitted to the first connection unit AE1 via the internal Ethernet EN in accordance with the destination MAC address (here DA = macl) arranged in the Ethernet header. The control unit CONT arranged in the first connection unit AE1 recognizes, by evaluating the ether type field, that extended ATM cells ecell (vcl), ecell (vc2) are arranged in the useful data field nf, each of which is in accordance with the routing information located in the additional information field zf - here ri = TLNl or ri = TLNn - are to be relayed. According to the exemplary embodiment, after the additional information fields zf have been removed, the ATM cells cell (vcl) assigned to the first virtual connection vcl are forwarded to or via an output A of the DSLAM communication device and to or via the correspondingly addressed first subscriber line TLN1.

It should be noted that, according to an alternative embodiment of the method according to the invention, the respective additional information field zf is not removed before the ATM cells transmitted to the respective destination AE1 ... Z are forwarded becomes. This is for example in a cascade to ^¬ arrangement or configuration of destination port units of the case - not shown. After evaluating the routing information, the expanded ATM cells are forwarded together with the respective additional information field in a first step, for example to a further module assigned to the connection unit. In a further step in this assembly, the additional routing information of the transmitted, expanded ATM cells is evaluated again and then - after removing the additional information fields zf - the ATM cells are relayed in the manner described.

Correspondingly, the ATM cells cell (vc2) assigned to the second virtual connection vc2 are forwarded to or via an output A of the communication device DSLAM and to or via the correspondingly addressed nth subscriber line TLNn. The subsequent forwarding of the ATM cells cell (vcl), cell (vc2) to or via the subscriber access network ACCESS in the direction of the subscriber takes place in accordance with the ATM transmission method, i.e. depending on the VPI and VCI values (Virtual Path Identifier and Virtual Circuit Identifier) contained in the target information of the individual ATM cells.

It should be noted that in the additional information fields zf of the individual expanded ATM cells, in addition to the information identifying the respective subscriber line TLNl ... n or TLNl ... k or the respective output port, additional information for further transmission as routing information ri are insertable. For example, an additional ATM service class assigned to the respective virtual connection or ATM connection - for example VBR, ABR, UBR - Identifying information and / or QoS information

(Quality of Service) can be inserted. The respective ATM cell is then NEN according to these additional Informatio ^¬ example, a particular class of service to a particular type arranged in the target connection unit queue and then relayed in the manner described above a certain subscriber line.

In addition to the connection units AE1 ... Z already described, further connection units or central units (not shown) arranged in the DSLAM communication device can be connected to the internal Ethernet EN, via which only conventional data frames dp formed in accordance with the IEEE 802.3 standard - i.e. normal ethernet

Data traffic - to be forwarded to the Ethernet EN. These conventional data frames are conveyed together with the data frames or data packets dp formed in the context of the method according to the invention in accordance with standardized Ethernet transmission technology via the Ethernet EN.

In addition to the information cell (vcl), cell (vc2) transmitted via the established connections vcl, vc2, further information can advantageously be provided in a cost-effective manner between the components arranged in the DSLAM communication device and connected to the Ethernet EN - e.g. Connection units AE1 ... Z, central units PACK - can be exchanged using the method according to the invention - e.g. Control and configuration information.

Claims

claims

1. A method for communicating information (inf) at ^¬ least partially via a packet-oriented communications network (EN), wherein the information to be information (cell) as useful ^¬ information (data) in a user data field (nf) of at least one data packet (dp) of the packet-oriented communication network (EN), in which destination information (DA) is inserted into the at least one data packet (dp), characterized in that

additional routing information (ri) is assigned to the information to be transmitted (cell) before being inserted into the user data field (nf) of the at least one data packet (dp) for further transmission,

- That the at least one data packet (dp) and the information inserted therein (cell) together with the respectively assigned routing information (ri) to at least one destination (AEl ... z) represented by the destination information (da) of the data packet (dp) packet-oriented communication network (EN) are transmitted, and

- That the information (cell) transmitted to the destination (AEl ... z) is relayed as a function of the respectively assigned routing information (ri).

2. Method for transmitting information (inf) at least partially via a time slot-oriented communication network, in which the information (cell) to be transmitted is inserted as useful information (data) in at least one time slot of the time slot-oriented communication network, characterized in that

additional routing information (ri) is assigned to the information to be transmitted (cell) before being inserted into the at least one time slot, for further transmission, - That the at least one time slot and the information (cell) inserted therein together with the respectively assigned routing information (ri) to at least one destination

(AEl ... z) are transmitted in the time slot-oriented communication network, and

- That the information (cell) transmitted to the destination (AE1 ... Z) is relayed depending on the respectively assigned routing information (ri).

3. The method according to claim 1 or 2, characterized in that the information (cell) inserted into the useful data field (nf) of the at least one data packet (dp) or in the at least one time slot is at least partially related to the packet-oriented or time slot-oriented Ko communication network (EN) -guided, virtual connection (vcl, vc2) are assigned.

4. The method according to any one of the preceding claims, characterized in that the information (cell) transmitted to the destination (AEl ... z) in the packet- or time slot-oriented communication network (EN) is reproduced as a function of the routing information (ri) and then the reproduced information.

5. The method according to any one of the preceding claims, characterized in

that the information to be transmitted (cell) is part of at least one data cell of a cell-oriented communication network (ACCESS),

that an additional information field (zf) for inserting the routing information (ri) is added to the at least one data cell (cell) before insertion into the user data field (nf) of the at least one data packet (dp) or before insertion into the time slot, - That the at least one data cell (cell) transmitted to the at least one destination (AE1 ... Z) in the packet or time slot-oriented communication network (EN) depending on the respectively assigned routing information (ri) to / via the cell-oriented communication network (ACCESS) is passed on.

6. The method according to claim 5, characterized in that the additional information field is removed before the at least one data cell (cell) is forwarded to / via the cell-oriented communication network (ACCESS).

7. The method as claimed in claim 5 or 6, characterized in that the number (s) of the data (n) representing the number of data cells (cell) inserted into the useful data field (nf) of the at least one data packet (dp) or into the at least one time slot ( dp) or is inserted in the time slot.

8. The method according to any one of claims 5 to 7, characterized in that the cell-oriented communication network (ACCESS) is designed according to the asynchronous transfer mode.

9. The method according to claim 1 or one of claims 3 to 8, characterized in that the packet-oriented communication network (EN) is designed in accordance with the IEEE 802.3 standard.

10. The method according to claim 8 or 9, characterized in that the routing information (ri) comprise further information for identifying an ATM service class.

11. Communication arrangement for transmitting information (cell) at least partially via a packet-oriented communication network (EN) with insertion means (CONT) arranged in the packet-oriented communication network (EN)

- for inserting the information (cell) as useful information (data) into a useful data field (nf) of at least one data packet (dp) of the packet-oriented communication network (EN),

for inserting target information (DA) into the at least one data packet (dp), characterized in that

that additional assignment means assigned to the insertion means (CONT) are provided for assigning additional routing information (ri) to the information (cell) to be inserted into the useful data field (nf) of the at least one data packet (dp),

- That the packet-oriented communication network (EN) is designed such that the at least one data packet (dp) and the information (inf) inserted therein together with the respectively assigned routing information (ri) to at least one of the destination information (DA) of the data packet (dp ) represented destination (AE1 ... Z) in the packet-oriented communication network (EN), and

- That at the respective destination (AEl ... z) further mediation means (CONT) are provided, through which the to the destination

(AEl ... z) transmitted information (cell) depending on the assigned routing information (ri).

12. Communication arrangement for transmitting information (cell) at least partially via a time slot-oriented communication network, with insertion means (CONT) arranged in the time slot-oriented communication network for inserting the information (cell) as useful information (data) into at least one time slot of the time slot-oriented communication network (EN ) characterized,

- that further the insertion means (CONT) associated to ^¬ ordering means are provided by which the over ^¬ averaging information (cell) assigned before inserting in the feed least one time slot of each additional routing information (ri) to the attendant,

the time slot-oriented communication network is designed such that the at least one time slot and the information (inf) inserted therein are transmitted together with the respectively assigned routing information (ri) to at least one destination (AE1 ... Z) in the time slot-oriented communication network,

- That additional switching means (CONT) are provided at the respective destination (AE1 ... Z), through which the information (cell) transmitted to the destination (AEl ... z) is relayed as a function of the respectively assigned routing information (ri) ,

13. Communication arrangement according to claim 11 or 12, characterized in that

- That the insertion means (CONT) and the assignment means are designed such that the at least one data cell (cell) before insertion into the user data field (nf) of the data packet (dp) or before insertion into the at least one time slot, an additional information field (zf ) for inserting the routing information (ri) is added, - .that the switching means (CONT) are designed such that the at least one data cell (cell.) transmitted to the destination (AE1 ... Z) in the packet- or time slot-oriented communication network (EN) ) depending on the assigned routing information (ri) to / via the cell-oriented communication network (ACCESS).

14. Communication arrangement according to one of claims 11 to

13, characterized in that before the at least one data cell (cell) is forwarded to / via the cell-oriented communication network

(ACCESS) the additional information field (zf) is removed.

15. Communication arrangement according to claim 13 or 14, characterized in that the switching means (CONT) are designed such that the number of data cells (cell) inserted into the useful data field (nf) of the at least one data packet (dp) or into the at least one time slot ) representing information (s) is inserted into the data packet (dp) or into the time slot.

16. Communication arrangement according to one of claims 13 to 15, characterized in that the cell-oriented communication network (ACCESS) is designed according to the asynchronous transfer mode.

17. Communication arrangement according to claim 11 or one of claims 13 to 15, characterized in that the packet-oriented communication network (EN) is designed in accordance with the IEEE 802.3 standard.

18. Communication device (DSLAM) for transmitting information (cell) at least partially via a packet-oriented communication network (EN) arranged in the communication device (DSLAM), with insertion means (CONT)

for inserting the information to be transmitted (cell) as useful information (data) into a useful data field (nf) of at least one data packet (dp) of the packet-oriented communication network (EN), for inserting target information (DA) into the at least one data packet (dp), characterized in that

- The communication network (EN) is designed in such a way that - the at least one data packet (dp) and the information (inf) inserted therein together with the respectively assigned routing information (ri) to at least one through the destination information (DA) of the at least one data packet (dp) represented destination (AEl ... z) are transmitted within the communication device (DSLAM), and

- That further communication means (CONT) assigned to the respective destination (AE1 ... 3) are provided in the communication device (DSLAM), by means of which the information (cell) transmitted to the destination (AEl ... z) depending on the respective assigned routing information (ri) are relayed.

19. Communication device (DSLAM) for transmitting information (cell) at least partially via a time slot-oriented communication network arranged in the communication device (DSLAM), with insertion means (CONT) for inserting the information to be transmitted (cell) as useful information (data ) in at least one time slot of the time slot-oriented communication network, characterized in that

that further assignment means assigned to the insertion means (CONT) are provided for assigning additional routing information (ri) to the information (cell) to be inserted in the at least one time slot,

- That the time slot-oriented communication network is designed such that the at least one time slot and the information (inf) inserted therein is transmitted together with the respectively assigned routing information (ri) to at least one destination in the time slot-oriented communication network, and - that in the communication device (DSLAM) further switching means assigned to the respective destination (AEl ... z) (CONT) are provided, by means of which the information (cell) transmitted to the destination (AE1 ... Z) is relayed as a function of the respectively assigned routing information (ri).

20. Communication device according to claim 18 or 19, characterized in that

- That the information to be transmitted (cell) is part of at least one data cell (cell) of a cell-oriented

Communication network (ACCESS),

- That the insertion means (CONT) and the assignment means are designed such that the at least one data cell (cell) an additional information field before insertion into the user data field (nf) of the at least one data packet (dp) or before insertion into the at least one time slot (zf) is added to insert the routing information (ri),

- That the mediation means (CONT) are designed such that the at least one to the at least one destination

(AE1 ... Z) in the packet or time slot oriented communication network (EN) transmitted data cell (cell) depending on the assigned routing information (ri) to / via the cell oriented communication network (ACCESS).

21. Communication device according to claim 20, characterized in that the switching means (CONT) are designed in such a way that before the at least one data cell (cell) is forwarded to / via the cell-oriented communication network (ACCESS) the additional information field (zf) is removed.

22. Communication device according to one of claims 18 to 21, characterized in that by the target information (DA) of the at least one data packet (dp) or by the at least one destination in the time slot-oriented communication network at least one in the communication device (DSLAM) and the respective switching means (CONT) comprehensive connection unit (AE1 ... Z) or central unit (PACK) is represented.

23. Communication device according to one of claims 18 to 22, characterized in that the additional routing information (ri)

- At least one subscriber line (TLNl ... n, TLNl ... k) connected to the respective connection unit (AEl ... z), or

- At least one connection port assigned to the respective connection unit (AEl ... z) is represented.

24. Communication device according to one of claims 11 to

13, characterized in that the cell-oriented communication network (ACCESS) is designed according to the asynchronous transfer mode.

25. Communication device according to claim 18 or according to one of claims 20 to 24, characterized in that the packet-oriented communication network (EN) is designed in accordance with the IEEE 802.3 standard.

26. Communication device according to claim 24 or 25, characterized in that the routing information (ri) includes further information for identifying an ATM service class, the respective ATM service class being assigned a corresponding queue arranged on the respective connection unit (AE1 ... Z).