Rainbow Electronics DS3134 - Manual (Page 202)

DS3134
202 of 203
Single T3 with 512 HDLC Channel Support
Figure 14F shows an application where a T3 line is interfaced to two DS3134. In this application, the T3
line is demultiplexed by the M13 block and passed to the DS21FF42 Four x Four 16 Channel T1 Framer
and DS21FT42 Four x Three 12 Channel T1 Framer devices. The T1 framers locate the frame and
multiframe boundaries and interface to the DS3134. In this application, aggregating four T1 lines into a
single 8.192 MHz data stream is not required since the DS3134 has enough physical ports to support the
application but aggregation could be done to cut down on the number of electrical connections between
the DS3134 and the T1 framers. The T1 lines can be either clear channel or channelized.
T3 Application (512 HDLC Channels) Figure 14F
DS3134
CHATEAU
# 1
DS21FF42
Four x Four
16 Channel
T1 Framer
DS21FT42
Four x Three
12 Channel
T1 Framer
M13
Interface
1
2
16
Port 0
Port 1
Port 2
Port 3
17
18
28
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
Port 13
Port 14
Port 15
app_b
Port 0
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
Port 13
Port 14
Port 15
DS3134
CHATEAU
# 2