RNC 3820 Notes[Informal notes collected from RNC 3820 product catalogue and CPI]

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RNC 3820 Highlights RNC 3820 R1 is available in a 3 subrack configuration in a single cabinet Single cabinet RNC 3820 R1 is capable of handling 768 Node Bs Capacity increased from 1.2 Gb/s for RNC 3810 to 2 Gb/s for single cabinet RNC 3820 Future RNC 3820 two cabinet configuration will support up to 4 Gb/s. RNC 3820 uses SPB3 which provides a capacity of 50 mb/s compared with SPB21 which has a capacity of 18 mb/s. RNC 3820 uses GPB65 Inter-subrack user plane capacity increased with the addition of 10 Gb/s ESL (Ethernet Subrack Link) connections C-Pack introduced for product packaging changes RNC module GPB and SPB board position There is also a new SCB-DF Switch Core Board Dual Feed (power supply) not discussed here. Information is available in the RNC 3820 CPI documentation.

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RNC 3820 BoardsTUB Timing Unit Board TUB's have been moved to slots 2 and 27 in Main Subrack CMXB Common Main Switch Board CMXB provides 200 Gb/s switching capacity Two CMXBs located in slots 3 and 26 in each subrack. Provides 20 x 10 GB/s Ethernet connections CMXB provides Ethernet on the backplane and front connectors ET-IPB Exchange Terminal Internet Protocol Gateway ET-IPGs are mandatory in slots 4 and 25. ET-IPGs may be located in slots 6, 8, 10,12, 15, 17, 19, 21 and 23. ET-IPG is used to convert between IP and ATM. Transport Links Provided by CMXB and ET-IPG Both CMXB and ET-IPG Ethernet ports can be used to transport Iu, Iur and Iub.

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CMXB Common Main Switching BoardCMXB Common Main Switch Board Located in slots 3 and 26 in each subrack Provides 20 x 10 GB/s Ethernet connections 200 Gb/s switching capacity 12 x 10 Gb/s connections on the backplane 8 x 10 Gb/s Ethernet ports on the front used for ESL and external links

Port I H G F E D C B A

Front Connector Management RS232 and 1000 Base-T for port I (used for authorized user internal debugging only) Ethernet connector for port H Ethernet connector for port G Ethernet connector for port F Ethernet connector for port E Ethernet connector for port D Ethernet connector for port C Ethernet connector for port B Ethernet connector for port A

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ET-IPG ET IP GatewayET-IPG Exchange Terminal Internet Protocol Gateway Mandatory in slots 4 and 25 of any subrack May also be used in slots 6, 8, 10, 12, 14, 15, 17, 19, 21 and 23 Acts as a gateway between ATM and IP protocols Provides 2 x 1 Gb/s Ethernet ports on the front used for external links

Port D

Front Connector Electrical connector D (not in use)

CB A

Electrical connector C (not in use)Ethernet connector for port B Ethernet connector for port A

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1 2 3

1

SCB TUB CMXB ET-IPG GPB65 GPB65 GPB65 GPB65 SPB3 SPB3 GPB65 SPB3 SPB3 GPB65 SPB3 SPB3 GPB65 SPB3 SPB3 ET-expansion ET-expansion GPB65 SPB3

2 3

4 5 6 7 8 9 101-7

4 5 6 7 8 9 10

RNC 3820 Main Subrack

11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

11 12 13 14 15 16 17 18 19 20 21 22 23 24

GPB65 ET-IPG CMXB TUB SCB

25 26 27 28

1 2 2 3

1

SCB GBP65 CMXB ET-IPG SPB3 SPB3 GBP65 SPB3 SPB3 GBP65 SPB3 SPB3 GBP65 SPB3 SPB3 GBP65 SPB3 SPB3 GBP65 SPB3 SPB3 ET-expansion ET-expansion

3

4 5 6 7 8 9 10

4 5 6 7 8 9 10

RNC 3820 Extension Subrack

11 12 13

11 12 13

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14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

14 15 16 17 18 19 20 21 22 23 24

ET-expansion ET-IPG CMXB SPB3 SCB

25 26 27 28

Backplane Connections The CMXB provides 12 x 10 Gb/s Ethernet switching on the backplane The CMXB provides 10 Gb/s Ethernet connections to slots 4, 6, 8, 10, 12, 14, 15, 17, 19, 21, 23 and 25 The SCB ASCC is still used to provide 640 Mb/s backplane connections to all boards in a subrack

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RNC 3810 Backplane Connections1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

640 mb/s ATM to each slot on the backplane provided by SCB ASCC

ET-IPG

CMXB

CMXB

SCB

4

6

8

10

12

14

15

17

19

21

23

25

10 Gb/s Ethernet to slots 4, 6, 8, 10, 12, 14, 15, 17, 19, 21, 23 and 25 on the backplane provided by CMXB

1

2

3

4

5

6

7

8

9

10

11 12 13

14

15 16 17

18

19 20

21 22 23

24

25 26 27

28

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SCB

ISL & ESL connectionsISL Inter Subrack Link ISL connections provided by SCBs in slots 1 and 28 Throughput for ISL is 310 Mb/s per link ISL carries control and signalling traffic between the subracks ESL Ethernet Subrack Link CMXB provides 8 x 10 Gb/s Ethernet ports that can be used for ESL connections to the extension subracks ESL carries user plane traffic between subracks

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ISL & ESL Subrack Connections1 3 ES-2CMXB CMXB

26

28

SCB

SCB

Slots 4 to 25

Subrack Connections Connections between the MS and ES is provided by both ISL and ESL links. Control and signaling traffic between subracks is carried over ISL connections at 310 Mb/s. User plane between subracks is carried over Ethernet via CMXB ESL connections at 10 Gb/s.

ES-1CMXB CMXB

SCB

SCB

Slots 4 to 25

ISL (Inter Subrack Link) 310 Mb/s ATM for control and signallingSCB

ESL (Ethernet Subrack Link) 10 Gb/s Ethernet for user plane trafficMSCMXB CMXB

SCB

Slots 4 to 25

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C-Pack in Product Package GBP65 SPB3 SPB3

The term C-Pack is used in RNC 3820 product package. C-pack is one GPB and two SPBs. The MS can accommodate four C-Packs An Extension Subracks can accommodate up to six C-Packs. The 3820 R1 can handle 11 C-packs total The full 16 C-pack configuration will be supported in later release.

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