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1 © NOKIA 2000 DN2_slides_7_01.PPT/ 5.7.2001 / PKS
Nokia DN2
Dynamic Node
Updated July 2001
Pirkko Kajander
2 © NOKIA 2000 DN2_slides_7_01.PPT/ 5.7.2001 / PKS
DYNANET PRODUCTS
DM2
DB2
ACM2DL2E
ACL2
DNT/ILT
DF2-8
DN2
3 © NOKIA 2000 DN2_slides_7_01.PPT/ 5.7.2001 / PKS
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
4 © NOKIA 2000 DN2_slides_7_01.PPT/ 5.7.2001 / PKS
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
5 © NOKIA 2000 DN2_slides_7_01.PPT/ 5.7.2001 / PKS
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
6 © NOKIA 2000 DN2_slides_7_01.PPT/ 5.7.2001 / PKS
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
+
7 © NOKIA 2000 DN2_slides_7_01.PPT/ 5.7.2001 / PKS
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.
8 © NOKIA 2000 DN2_slides_7_01.PPT/ 5.7.2001 / PKS
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
9 © NOKIA 2000 DN2_slides_7_01.PPT/ 5.7.2001 / PKS
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
10 © NOKIA 2000 DN2_slides_7_01.PPT/ 5.7.2001 / PKS
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
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