PTP Down

Down indicates that a PTP has failed; that is, the PTP is failing to pass traffic. Each PTP object represents a pair of transmit and receive ports on the network element. The symptoms seen from the network differ depending on which PTP has failed.

The symptomatic events for Down when a transmitter has failed include:

• Alarm from network element indicating transmitter failure.

• RFI on CTP objects that represent the end points on which the client connections that pass through the network element enter and exit the network. The Optical Transport Manager interprets RAIs and RFIs from digital links as RemoteIndications.

  The symptomatic events for Down when a receiver has failed include:

• Alarm from network elements indicating receiver failure.

• RFI on downstream CTP objects that represent the end points on which the client connections that pass through the network element enter and exit the network. The Optical Transport Manager interprets RAIs and RFIs from digital links as “zz.”