DN2 Slides 7 01

1 © NOKIA 2000 DN2_slides_7_01.PPT/ 5.7.2001 / PKS

Nokia DN2

Dynamic Node

Updated July 2001

Pirkko Kajander


DYNANET PRODUCTS

DM2

DB2

ACM2DL2E

ACL2

DNT/ILT

DF2-8

DN2


Efficient capacity grooming and rerouting, because

1) cross-connect,

2) drop/insert and

3) voice/data multiplexer

are in the same product. Several efficient ways to

protect equipment and/or signal route.

Modular design:Capacity can be increased

up to 40 ports by 2 port increments.

Direct data or speech interfaces upon request.

Small size.

DN2 - Efficient Three-in-one Node for Network Flexibility and Reliability

DN2

DN2

PABX

DB2

DB2

DB2

DM2

DM2

DM2

DM2

PABX

NMS

DN2


DN 2 Dynamic Node Equipment

•Consists of a control unit (CU), a bus power unit (BPU) and interface units (IU2). The BPU- and the IU2-units can be duplicated.

•Direct data or speech interfaces provided by DYNACARD units.

•n x 8 kbit/s, n x 64 kbit/s, 2 Mbit/s switching.

•1...40 x 2 Mbit/s (G.703/G.704) capacity.

2M, G.703V.11

2M, G.704

2M, G.7042M, G.703

ISDNV./RS/X

VF

CU BPU IU2 IU2 CH


DN2 - Equipping of a 40-Port Device

Max. 40 unprotected or 20 protected 2M ports.

Two 19" subracks.

Installation in 19" rack or on the wall.

Unequipped unit slots for any single-card equipment.

PIACUIU2IU2IU2IU2IU2IU2IU2IU2IU2IU2

PIAIU2IU2IU2IU2IU2IU2IU2IU2IU2IU2

EBPU

EBPU


DN2 - Connection Alternatives

Cross connection

Broadcast

Digital omnibus Conditional connections

Bit pattern andbit mask connections

8...2048 kbit/s

8...2048 kbit/s

32...2048 kbit/s

8...2048 kbit/s

8...2048 kbit/s

+


DN2 Redundancy Arrangements

• Decentralization of connection information.

The cross connection is stored in the Interface Units (IU2)

• Duplication of 2M connections (1+1 redundancy).

A 2Mbit/s signal is brought to/sent from two different ports in the DN2 via two different transmission routes, the DN2 selects the better of these.

• Duplication of equipment.

The bus and the cross-connection can be duplicated if the node size is less than or equal 20 ports. Also the Bus Power Unit can be duplicated.

• Conditional Connection Tables.

The DN2 can be defined to change connection tables on the basis of a condition. This way it is possible to implement e.g.N+1 redundancy.

• Channel specific redundancy in a loop network.

n*8 kbit/s channel protection using a pilot bit.


DN2 - Transmission Optimization in a HUB

8 kbit/s channel cross-connection capability. Reduced transmission capacity need (typically -30...-70%). Flexibility for changes and optional selective protection.

DN2

BTS

BTS

BTS

BTS

BTS


DN 2 - Block Diagram

• Plug-In UnitsIU2 Interface unit 2x2

Mbit/s

CU Control Unit

(E)BPU Bus Power Unit

• Optional UnitsVF units

Data units

DN2BUS

DN2BUS

IU2

(E)BPU(E)BPU

IU2

CU

.

.

.

.

.

.

DYNACARDBUS

VF-UNIT

DATA-UNIT

2 Mbit/s

2 Mbit/s

2 Mbit/s

2 Mbit/s


DN 2 - Switching Protection

Decentralized cross-connection.

Duplicated connection bus.

Incoming signal is fed to both buses.

Outgoing signal is selected according to pilot signals of the buses.

DN2BUS

DN2BUSIU2

(E)BPU

(E)BPU

IU2

CU

.

.

.

2 Mbit/s

2 Mbit/s

2 Mbit/s

2 Mbit/s

Documents

DN2 Slides 7 01