How does a SONET device work within the TL1 network?
SONET devices are some of the most commonly deployed TL1 network elements today. The special architecture of a SONET ring offers added benefits for TL1 monitoring.A SONET ring must be connected to the TL1 OSS through only one device on the ring (known as the Gateway). Whenever the gateway network element receives a TL1 message, it uses the TID to route the message to the appropriate network element. In this way, you can reach all of the devices on a SONET ring by connecting to only one.
