Refer also to Figure C-10,which shows pin locations on Modulus 21 backplanes. Modulus 9s have a similar layout.

Modem A

Modem B

Pins

Jumpers on

Left Pin Pairs

Pins

Modulus 21 Enclosure, Rear View

Figure C-10. Modulus Backplane Pin Locations (Modulus 21 Shown)

In Hong Kong and the United Kingdom, Busy Out backplanes are hard-wired for Busy Out operation. These backplanes do not use pin jumpers.

 

 

 

 

 

Information

Country-Specific

 

 

 

 

 

 

 

 

 

Country-Specific Information C-45

Page 225
Image 225
Motorola and V.32bis, V.34-SDC, 326X V.34 manual Modem a Modem B