TXC-03456 mapper equivalent, l4m device level 4 mapper.
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L4M Device
Level 4 Mapper TXC-03456 DATA SHEET DESCRIPTION
The L4M device maps a 139.264 Mbit/s asynchronous line signal into an AU-4 VC-4/STS-3c SPE s.
* Maps an asynchronous 139.264 Mbit/s tributary into an AU-4/VC-4 STS-3c/SPE.
* Nibble or byte 139.264 Mbit/s .
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