Carrier Access 1750 Manual De Usuario

Broadmore 1750 system architecture is similar to the Broadmore 1700, except that the 
Broadmore 1750 midplane design also supports 1:N SAM protection using a redundant 
SAM installed in slot P. Modules are installed from the front and rear of the chassis. 
There are 17 vertical slots as viewed from the front with the cover removed. 

The Broadmore 1750 is generally configured as a fully redundant system with 
redundant CPUs, redundant OC-12c NIMs, and redundant SAMs, as shown on the next 
page. Five Unstructured DS3-3 (or E3-3) SAMs provide 1:4 protection for 4 three-
modules. Similarly, twelve Structured DS3 SAMs provide 1:11 protection for 11 one-
port modules. Other configurations are possible (contact factory for details).

The Broadmore 1750 is shipped in a minimum usable configuration with a factory 
installed Alarm/Power Module in the right-most slot. Unused slots are covered with 
blank panels except the slots for a single NIM, SAM, and CPU module.

The Broadmore 1750 chassis can be configured with the following modules.

Network Interface Module (NIM) – 1 or 2 (must be identical)

Service Access Module (SAM) – 1 to 4 Unstructured DS3-3 or E3-3 SAMs in 
slots C, F, J, and M; or 1 to 11 Structured DS3 SAMs in slots C to N. (All 
protected SAMs must be identical.) See figures on next page.

Protection SAM – 1 SAM in slot P (must be identical to one of the above SAMs)

Central Processing Unit (CPU) – 1 or 2 (must be identical)

Alarm/Power Module (APM) – 1 (factory installed)

Input/Output Module (IOM) – 1 for each NIM, SAM, and CPU (installed in rear 
panel immediately behind corresponding module in front panel)

Protection IOM – 1 (installed in rear panel immediately behind Protection SAM)

Configurations using more than four Structured DS3 SAMs 

require a high-capacity 3-fan tray for cooling. (Contact factory for details.)