Connect the MCI Cable to the A25B Cable

Table 4-4. Cable Pinouts

NEAX 2400

RS-232

RS-232

Pin

25 Pair

Function

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

 

 

 

 

 

 

 

 

 

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.

Issue 2 December 1995 4-7

Page 49
Image 49
AT&T 2400 manual Connect the MCI Cable to the A25B, Cable Pinouts Neax RS-232 Pair Function Number