In IMS, Bi-Directional circuits don’t consider the port’s Tx/Rx information, and therefore a port represents both the transmit and receive directions.
In the above diagram both ports shown are modelled as Bi-Directional.
Some points to remember:
▪A Bi-Directional circuit can only be related to Bi-Directional ports
▪A Bi-Directional port can be changed to a UNI directional port, provided there is no circuit related to it, regardless of its Port Template being set to BI
▪IMS considers a port as Bi-Directional if the TxRx property is not set
▪If the TxRx property is set to either Tx or Rx, then IMS considers the port to be UNI directional port
When a Bi-Directional circuit is related to a Bi-Directional carrier circuit, the Direction property of the CircuitRelation entity is set to 0 (BiDirectional).
