A-14 Cisco 7010 Hardware Installation and Maintenance
MIP Interface Cable Pinouts
MIP Interface Cable Pinouts
The MIP T1 interface cables have two, male, 15-pin DB connectors (one at each end) to connect the
MIP with the external CSU. Table A-16 lists the pinouts for the null-modem T1 cable, and
Table A-17 lists the pinouts for the straight-through T1 cable. Table A-18 lists the pinouts for the E1
interface cables.
Table A-16 T1 Null-Modem Cable Signals
Table A-17 T1 Straight-Through Cable Signals
Ground 1, 26,
7, 32,
13, 38,
19, 44,
25, 50
1, 26,
7, 32,
13, 38,
19, 44,
25, 50
Ground
Loopback (not
connected)
12, 37
12, 37 Loopback (not
connected)
Not used 14–18, 20–24,
39–43, 45–49
14–18,
20–24,
39–43,
45–49
Not used
15-Pin DB
Connector
15-Pin DB
Connector
Signal Pin Pin Signal
Tx tip
1
1. Tx = transmit.
13Rx tip
Rx tip
2
2. Rx = receive.
31Tx tip
Tx ring 9 11 Rx tip
Rx tip 11 9 Tx ring
15-Pin DB
Connector
15-Pin DB
Connector
Signal Pin Pin Signal
Tx tip
1
1. Tx = transmit.
11Tx tip
Tx ring
2
2. Rx = receive.
99Tx ring
Rx tip 3 3 Rx tip
Rx tip 1111Rx tip
Signal Name From Pins Direction To Pins Signal Name
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