Juniper CTP151 Platform, Hardware Manual, Page: 43 / 104

The CTP151 device has five separate EIA-530 cabling options for the serial interface module, with a male
HD-26 connector on the module end and the following connectors on the DCE or DTE end:
•
Female DB-25 connector on the DCE end for EIA-530/RS-422/V.11, RS-232/V.24, V.35
•
Male DB-25 connector on the DTE end for EIA-530/RS-422/V.11, RS-232/V.24, V.35
•
Female DB-15 connector on the DCE end for X.21
•
Male DB-15 connector on the DTE end for X.21
•
RJ-45 connector for Radio V.24 Sync interface
The pinouts for these connections have different configurations for EIA-530, RS-232, voice, and T1
interface signals.
EIA-530 Connector Interface Signal Pinouts (DB-25 Female DCE)
Table 16 on page 34 lists the EIA-530 interface signal pinouts for the HD-26 connector to the female
DB-25 connector for the CTP151 platform.
Table 16: EIA-530 DCE Connector Interface Signals for HD-26 to Female DB-25
Circuit Description
DB-25
Pin
HD-26
Pin
BB Receive Data—A (output from CTP) 3 1
DD Receive Clock—A (output from CTP) 17 2
DB Transmit Clock (from DCE)—A (output from CTP) 15 3
DA Transmit Clock (from DTE)—A (input to CTP) 24 4
BA Transmit Data (SD)—A (input to CTP) 2 5
CF Data carrier detect (DCD)—A (output from CTP) 8 6
CC Data set ready (DSR)—A (output from CTP) 6 7
CB Clear to send (CTS)—A (output from CTP) 5 8
CB Clear to send (CTS)—B (output from CTP) 13 9
CA Request to send (RTS)—B (input to CTP) 19 10
CA Request to send (RTS)—A (input to CTP) 4 11
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