TXC-03452B
FEATURES h S a at .D w w w
L3M Device
Level 3 Mapper TXC-03452B DATA SHEET DESCRIPTION
The L3M maps a DS3 line signal into an STM-1 TUG-3 or STS-3/ STS-1 SPE or STS-1 SPE SDH/SONET signal. An E3 line signal is mapped into an STM-1 TUG-3 signal only. The L3M provides a TUG-3 formatted signal for STM-1 operation, or an STS SPE for STS-3 or STS-1 operation. The SDH/SONET signal is transmitted via an add bus with timing derived from the drop side, add side or from external timing (STS-1 only). An option is provided to generate the A1, A2 framing pattern, C1 byte and H1, H2 pointer towards the add bus when external timing mode is selected.
APPLICATIONS
- Add/drop multiplexers
- Digital cross-connect systems
- Broadband switching systems
- Transmission equipment
SDH/SONET SIDE
“O”-Bits I/O
Ext Alarms
Control
Microprocessor Interface
LINE SIDE
Add Bus
L3M
Level 3 Mapper TXC-03452B
Drop Bus
POH I/O
VCXO Boundary Alarm Port I/O Scan
U.S. Patents No.: 4,967,405; 5,040,170;...
