High Availability:Hardware:Tdm Interfaces
TelcoBridges products supports 3 types of line interfaces in 4 possible TDM modules.
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Redundancy
SONET/SDH
Only the SONET/SDH interfaces have an innate redundancy feature. There are 2 ports per SONET/SDH interfaces modules: Main and APS (Automatic Protection Switching). In the eventuality where the Main fiber is damage or disconnected, the APS can take over and resume service.
Line Service Distribution
The DS3 and E1/J1/T1 interfaces doesn't have redundancy connectors. To minimize the effect of a line interface failure, it is recommended to distribute groups of line services of each devices between providers when possible. This create share loading between devices and avoid overwhelming a system provider because all the traffic are redirected to a single device.
Recommended Setup
This is a recommended setup when using DS3, SCSI or RJ48 interfaces:
