AT&T 2400 - Manual (Page 49)

Issue 2 December 1995 4-7
Connect the MCI Cable to the A25B Cable
Proceed to the next section.
Connect the MCI Cable to the A25B
Cable
The customer or the customer’s switch technician must connect the cable. AT&T
does not assume responsibility for connecting the MCI cable and the A25B
cable.
After connecting the MCI cable to the switch, you must connect the MCI cable to
the A25B 25-pair Amphenol c able. Use the following instructions to complete the
connection.
1. Connect the free end of the MCI cable to one end of the A25B cable.
2. Connect the free end of the A25B cable to the Amphenol connector on the
Y-cable shipped with the SID.
Proceed to the next section.
Table 4-4. Cable Pinouts
NEAX 2400
25 Pair RS-232
Function
RS-232
Pin
Number
Port 0
Violet/Slate Frame Ground 1
Blue/White Transmit Data 3
Orange/White Receive Data 2
Blue/Red Signal Ground 7
Port 1
Violet/Slate Frame Ground 1
Green/Black Transmit Data 3
Brown/Black Receive Data 2
Green/Yellow Signal Ground 7