1. ANAND S JTO DTS ERNAKULAM
SDH Network Elements
ANAND S
JTO DTS
ERNAKULAM

2. Why you require a transmission system?
Between exchanges dedicated media is expensive.
Therefore a system is required (called transmission system) which is able to carry the bulk traffic via a single media.

3. BUILDING UP THE BASE STREAM (2MB)
Voice Frequency ranges upto 4 Khz
Sampling the Voice 8 Khz
(Double the Max. Frequency)=8000samples/s
8 bits per sample
Digital Bit Rate: 8Kbps X 8 = 64 Kbps

4. BUILDING UP THE BASE STREAM (2MB)……
One sample duration (approx) = 4 µs
Duration between samples = 125 µs

5. BUILDING UP THE BASE STREAM (2MB)
30 Voice 64 Kbps
One channel for Frame (64 Kbps)
One channel for Signaling (64 Kbps)
Total number of Channels = 32
Bit Rate: 32 X 64 K= 2048 Kbps(2Mb)

6. THE TRUCK ANALOGY
PAYLOAD
OVERHEAD

7. THE TRUCK ANALOGY
PAYLOAD
OVERHEAD

8. THE TRUCK
PAYLOAD
OVERHEAD

9. PDH BIT RATES E1-2048 Kbps (2MB) [30 Voice Channel]

10. SDH BIT RATES 1 E1 = 2048 kbps STM1 = 63 E1 + OH bytes = 155.52Mbps
STM4 = 4*STM-1 = Mbps
STM16 = 16*STM-1 = Mbps(2.5G)
STM64 = 64*STM-1= Mbps

11. SDH Network Elements Regenerators Terminal Multiplexers
Add-drop Multiplexers (ADM)
Multiple Add drop Multiplexers (MADM)
Digital cross connects

12. Regenerators Regenerated o/p signal i/p signal
whenever transmission over 50 km
They terminate and regenerate the optical signal

13. Regenerators..

14. Terminal Multiplexer (TM)
Line port
Tributary ports
Accept a number of tributary signals
multiplex them to appropriate optical/electrical aggregate signal
One line port
To create Linear topology

15. Terminal Multiplexer (TM)..
Input is low bit rate PDH or SDH signal
Output is high bit rate SDH signal

16. Linear Topology using TM
Line port n n
Line port n
TM at Ernakulam
TM at Alleppey
Here “n” can be STM -1 ,STM-4 or SRM-16
Ring topology not possible using TM
Only point to point linear topology possible
For that we need ADM or MADM

17. Add Drop Multiplexer (ADM)
Line port 1 n
Line port 2
Tributary port 1
Here “n” can be STM -1 ,STM-4 or SRM-16
Ring topology & point to point linear topology is possible using ADM
Can be operated in a “through–mode” fashion

18. Point to multi point linear topology using ADM and TM
Line port
Line port n n n n
TM at Ernakulam
TM at Alleppey
ADM at cherthala
Ring topology using ADM
KTM n n n
An STM-n ring
TVM
ENK n
ALP

19. Add Drop Multiplexer (ADM)...

20. Digital Cross Connect (DXC)
STM-N
STM-N
DXC
Here “n” can be STM -1 ,STM-4 or SRM-16
Mesh Topology also possible using DXC

21. Digital Cross Connect (DXC)...
Input : many STM- N signals
Output: many STM-N signals

22. Multiple-Add Drop Multiplexer (MADM )
Equipment used to –
Add (Input)
Drop (Output)
Mux - Demux and cross connect tributaries (O&E) of different types and data rates.
An actual Hardware – Software extension of existing ADM

23. Comparison between ADM and MDM
MADM is an Improved (Hardware and Software) Version of ADM
ADM
MADM
2 Number of STM 16 Line ports Available. Hence Only Single Ring Configuration Possible
4 Number of STM 16 ports. Double Ring Configuration within single equipment. Hence Ring to Ring connectivity is possible without physical BUP , traffic interruption is less
Less Number of Interfaces
Maximum Number of Optical and Electrical Interfaces available
Ethernet support is very minimal
Wide range of Ethernet support including GbE Ports

24. ADM Ring MADM Ring Ring A Ring B MADM ADM Station A Station D
Station B
Station C

25. TEJAS TJ100MC-16 MADM Actual Figure
Alarm Display Panel
Multi Function Card (MFC3)
Cooling Fans
Slots 7&8 Extended Cross Connect Cards (XCET)
Slot 1& E1 Termination Card (TET252E1)
Slot 2 - 8xSTM1o + 8xSTM1e (AGG06)
Slots 9,10,11,12 -STM-16 Line Cards (A010000)
Slot GE+32FE+32FX Ports Card (ELAN05D)
Slots 4&5 - Cross Connection Control Cards (XCC05)

26. TEJAS TJ100MC-16 MADM –VARIOUS PORTS Actual Figure

27. Block diagram of signal flow of an E-1 signal in DTS
MADM/ADM
ADF
DDF
FDF
TJB
Patch Cord
Pig Tail
12/24 Cable

28. ADF
DDF

29. TJB
FDF

30. Block diagram of signal flow of STM-1 signal in DTS
MADM/ADM
FDF
TJB
12/24 Cable
Patch Cord
Pig Tail
Tributary
Signal

31. TEJAS MADM NMS Web User Interface (WUI) – NE Information Page

32. TEJAS MADM NMS WUI – Node Slot View

33. MS-SPRING- Multiplex Section Shared Protection Ring
simultaneously protects all tributaries in STM extension of 1:1 to ring topology
half of OC-N capacity devoted to protection only half capacity available for traffic
wrap-around

34. View MS-SP Ring Page

35. Add-drop Provisioning
Copyright © 2000, Cisco Systems, Inc.
Add-drop Provisioning
Provisioning of traffic in an ADM or MADM is by adding and droppping using crossconnections
Add-drop provisioning is typically done by the network management system
<acronym>—<chapter title>

36. Add and Drop Example STM-16 Ring 16 x STM-1 channels Provisioning:
Copyright © 2000, Cisco Systems, Inc.
Add and Drop Example
STM-16 Ring
16 x STM-1 channels
Provisioning:
At ADM 1
Add the STM-1
Create crossconnect from Tributary to Line side
At ADM 2
Software built-up between line side ports
At ADM 3
Drop the STM -1
Create cross connection from Line side to Tributary
Add 1-3
ADM 1
ADM 2
STM 16
Ring
ADM 4
Drop
ADM 3
Add 3-4
Drop 3-1
<acronym>—<chapter title>

40. MADM and ADM - Physical Comparison
TJ100MC-16 MADM TJ100MC-16 ADM

41. TJ100MC-16MADM Manufactured by M/s
Bangalore

42. TEJAS TJ100MC-16MADM Configuration A
Configuration: AGG: 4xSTM-16 L16.2 Service: 8xSTM1, 8xSTM1e, 504E1, 8GE, 32FE, 32FX
Interface
Card Name
No of cards
Total Bandwidth
Slot Nos
4xSTM16
A010000 4
10G
9,10,11,12
8xSTM1o+ 8xSTM1e
AGG06 1
2.5G
2,6
504E1
TET252E1 2
1.25G
1,3,6
8GE+32FE+32FX
ELAN05D
Cross connection card
XCC05
4,5

43. TEJAS TJ100MC-16MADM Configuration B
Configuration: AGG: 2xSTM-16 L16.2 Service: 2xSTM4, 16xSTM1, 16xSTM1e, 252E1, 4GE, 16FE, 16FX
Interface
Cards
No of cards
Total Bandwidth
Slot Nos
2xSTM16
A010000 2 5G
9,10,11,12
1xSTM4+8xSTM1o+ 8xSTM1e
AGG07
3.122G
2,6
252E1
TET 252E1 1
0.622G
1,3,6
4GE+16FE+16FX
ELAN05S
2.5G
Cross connection card
XCC05
4,5

44. TEJAS TJ100MC-16MADM Configuration C
Configuration: AGG: 2xSTM-16 L16.2 Service: 8xSTM1, 8xSTM1e, 252E1, 8GE, 32FE, 32FX, 3xE3/DS3
Interface
Cards
No of cards
Total Bandwidth
Slot Nos
2xSTM16
A010000 2 5G
7,8,9,10
8xSTM1o+ 8xSTM1e
AGG06 1
2.5G
252E1+3xE3/DS3
COM1
0.777G
1,3,6
8GE+32FE+32FX
ELAN05D
Cross connection card
XCC05
4,5

45. Local Access … Accessing NMS WUI Page TEJAS TJ100MC MADM NMS Port
Ethernet Straight Cable
Client PC
URL is

46. Thank you