Remote loop-back (R+L/LB)
This switch will allow the entire fiber segment to be tested at either of the Flex Point
T1/E1 converters without having to set switches on both units. When set in this mode of
operation, the local unit is switched in a local loop-back mode. And in addition to the
local loop-back mode of operation, the fiber Tx port will be further encoded to carry a
remote loop-back protocol. This remote loop-back protocol will set the far end Flex
Point T1/E1 converter to remote loop-back mode of operation and return a signal to the
sending unit. An LED on the local and remote Flex Point T1/E1 converters will show a
configuration that the fiber segment is communicating properly between devices. By
returning the switch to the normal position, it will resume to normal operation.
CuRx
CuTx
CuRx
CuTx
FoRx
FoRx
FoTx
FoTx
Remote Loop Request
Over Fiber
Alarm Relay Contacts
The Flex Point T1/E1 converter also features dry relay contacts for optionally connecting
the media converter into a separate T1/E1 alarm circuit. The relay closes when a loss of
power or when signal detect is lost to the copper or fiber connection.
3
6
RJ-45/RJ-48
Relay
Operational rating on relay pins 3 & 6: 0 - 220 VDC max 2A
