Carrier Access 1750 Benutzerhandbuch

A Broadmore 1750 with OC-12c NIM can utilize Cell Buses A, C, D, and E and 
support up to 11 unstructured DS3 or 12 unstructured E3 ports within the available 
OC-12 ATM bandwidth of 622.080 Mbps. 

Because each unstructured DS3-3 and E3-3 SAM has three ports, only one SAM is 
needed for each cell bus. However, to utilize the 1:N SAM protection feature, all 
SAMs must be identical and be installed in specific slots.

For NIM redundancy, install OC-12c NIMs in slots A and B

If a single OC-12c NIM is used, it should be installed in slot B

Working SAMs must be installed in slots C, F, J, and M, corresponding to cell 
buses C, D, E, and A, respectively

The Protection SAM is installed in slot P 

A

B

C

D

E

F

G

H

J

K

L

M

N

P

CPU

Q

CPU

R

APM