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7-2 Mixtures of RS-232 and DCP Networks
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RS-232 AND DCP AT SEPARATE LOCATIONS
Figure 7-4 shows a case where one of the customer’s AUDIX systems is tied to a DCP switch and the other
tied to a non-DCP switch. The system located with the non-DCP switch is brand new, running R1V5 or
later software and equipped with a TN539 or TN539B for RS-232 access. The other system is running
R1V4 software and equipped with a TN366B (no RS-232 access). Since the DCP switch is equipped with
modem pooling, the modem pools are used to convert DCP into analog (t/r) for transmission to the other
AUDIX system. If the DCP switch did not have modem pooling, the customer should upgrade to R1V5 or
later software.
SWITCH
ACCE
25-PAIR FEMALE
CONNECTOR
AUDIX
ACCE
25-PAIR FEMALE
CONNECTOR
AUDIX
T1
CARRIER
T1
CARRIER
T1
CARRIER
PRIVATE
FACILITIES
COLLOCATED SYSTEMS
ACCE
25-PAIR FEMALE
CONNECTOR
AUDIX
SWITCH
DCP
RS-232
H600-330
GROUP 1
H600-331
GROUP 2
CROSS-CONNECT
FIELD
CROSS-CONNECT
FIELD
H600-331
GROUP 2
H600-331
GROUP 2
DCP
25-PAIR MALE
CONNECTOR
25-PAIR MALE
CONNECTOR
25-PAIR MALE
CONNECTOR
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RS-232
RS-232
ACCESS
SWITCH
DCP
Figure 7-1. RS-232 and DCP at the Same AUDIX