Carrier Access Broadmore 1750 - Manual (Page 139)

Broadmore 1750 - Release 4.6 7-25
Configuration
Module Redundancy
Module Redundancy
Protection Definitions ... 7-25
NIM Redundancy ... 7-26
SAM Redundancy ... 7-29
CPU Redundancy ... 7-33
Protection Definitions
Automatic protection switching (APS) is performed in accordance with specifications
except as noted. The following definitions are provided to clarify the terms used in
NIM redundancy.
Item Definition
APS Automatic Protection Switching
Reverting After redundancy switching, the system will switch back to
the original primary NIM when repairs are completed.
Non-
reverting After redundancy switching, the protection NIM will
remain the system primary NIM after repairs are completed.
In this case, the repaired NIM becomes the protection NIM.
This only applies to manual switching.
1+1
Protection The signal is continuously bridged to the working and
protection equipment so payloads are transmitted
identically over both paths. The receiving equipment
chooses either path. The user must set their equipment to bi-
directional. The Broadmore 1750 supports bi-directional
1+1 APS for the NIM. The Broadmore 1750 does not
support uni-directional 1+1 APS for the NIM.
1:n
Protection There is one backup for n critical components. Any of the n
working channels can be bridged to a single protection line.