Owner's manual

DS21455/DS21458 Quad T1/E1/J1 Transceivers
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Figure 30-2. DS21458 ESIB Group
PORT # 1
ESIBS0
ESIBS1
ESIBRD
PORT # 2
PORT # 3
PORT # 4
DS21458 #1
CPU I/F
PORT # 5
PORT #6
PORT # 7
PORT # 8
DS21458 #2
CPU I/F
NOTE: UP TO 8 PORTS (TWO DS21458s) CAN BE ARRANGED INTO AN ESIB GROUP. ON THE DS21458, THE ESIB
IS INTERNALLY CONNECTED FOR EACH OF THE FOUR TRANSCEIVERS.