RS8953B/RS8953SPB
1.0 HDSL Systems
HDSL Channel Unit
1.1 HTU Applications
1.1.2 Fractional Transport
Figure 1-3 illustrates a drop/insert application where only a portion of the PCM
channel bandwidth is transported over one or more HDSL wire pairs. The
RS8953B provides drop/insert indicator signals to control external data MUXes
and internal routing tables to map timeslots from either one of two synchronized
PCM data sources. For remote terminals using partial payloads, the PCM channel
may be configured to operate either at the standard interface rate or at the Nx64
effective payload rate.
Figure 1-3. Drop/Insert System Block Diagram
Insert
Mux
T1/E1
T1/E1
FIBER
or Other
Transceiver
FIBER
or Other
Transceiver
Drop
Mux
D/I
PCM
RS8953B HDSL Channel Unit
HDSL
CH1
HDSL
CH3
HDSL
CH2
Optional
N8953BDSB
Conexant
1-3
CONEXANT [ CONEXANT SYSTEMS, INC ]
