Alcatel-Lucent 1643 AMS Applications And Planning Manual page 95

Product description
The following figure shows the block diagram of the X2STM1ETRIB option card:
Main
Board
P2
Connector
In the receive direction for both STM-1 interfaces the clock is recovered and the
electrical CMI signals are decoded into the NRZ format and fed to the main ASIC. The
main ASIC transmits two preprocessed STM-1 signals to the Higher Order
cross-connect on the main board via the P2 connector for further processing. The
broadcast for the HO SNC/N is performed on the main board as well.
On the X2STM1ETRIB option card itself the following functions are performed:
• RSOH/MSOH extraction/insertion
• DCC processing
• 1+1 VC-4 SNC/N
• STM-1 MSP
• Timing reference signal switching
Important! The power of the 1643 AM must be switched off before the option
card is inserted.
X2E3-V2 option card
The X2E3-V2 option card provides two bidirectional 34 Mbit/s (E3) interfaces.
The X2E3-V3 option card is plugged into the P2 connector as described in
without cover" (p.
DIN1.6/5.6 coaxial connectors (one for the transmit and one for the receive directions
for each E3 port).
The following figure shows the block diagram of the X2E3-V2 option board.
...................................................................................................................................................................................................................................
365-312-801R7.2
Issue 3, May 2007
ASIC
Inventory Power
EEPROM Module
4-3). Physical interfaces to the additional E3 ports are four
Alcatel-Lucent - Proprietary
See notice on first page
CMI
Transformation/
RX/TX
Protection
CMI
Transformation/
RX/TX
Protection
Option cards
STM-1E
Tributary Ports
< TP2.1 >
electrical port:
coaxial 1.6/5.6
< TP2.2 >
electrical port:
coaxial 1.6/5.6
"Front view
4-15