- Copyright and Trademark Information
- Table of Contents
- List of Tables
- play_arrow Overview
- play_arrow Configuration
- play_arrow Configuring CESoPSN Bundles (CTP Menu)
- Configuring T1 and E1 Port Parameters for CESoPSN Bundles (CTP Menu)
- Configuring Analog Port Parameters for CESoPSN Bundles (CTP Menu)
- Configuring Serial Port Parameters for CESoPSN Bundles (CTP Menu)
- Configuring DS0 Time Slots for CESoPSN Bundles (CTP Menu)
- Configuring IP Parameters for CESoPSN Bundles on CTP2000 Devices (CTP Menu)
- Configuring IP Parameters for CESoPSN Bundles on CTP150 Devices (CTP Menu)
- Configuring the Missing Packet Fill Pattern for CESoPSN Bundles on CTP150 Devices (CTP Menu)
- Configuring Circuit Restart Parameters for CESoPSN Bundles on CTP150 Devices (CTP Menu)
- play_arrow Configuring CESoPSN Bundles (CTPView)
- Configuring T1 and E1 Port Parameters for CESoPSN Bundles (CTPView)
- Configuring Analog Port Parameters for CESoPSN Bundles (CTPView)
- Configuring Serial Port Parameters for CESoPSN Bundles (CTPView)
- Configuring DS0 Time Slots for CESoPSN Bundles (CTPView)
- Configuring IP Parameters for CESoPSN Bundles on CTP2000 Devices (CTPView)
- Configuring IP Parameters for CESoPSN Bundles on CTP150 Devices (CTPView)
- Configuring the Missing Packet Fill Pattern for CESoPSN Bundles on CTP150 Devices (CTPView)
- Configuring Circuit Restart Parameters for CESoPSN Bundles on CTP150 Devices (CTPView)
- play_arrow Administration
Serial Loops for CESoPSN Bundles Overview
You can use serial loops to diagnose issues in your network. You set up serial loops in the following directions:
Toward the serial interface and the attached customer device.
Toward the IP network and the remote customer device.
Serial loops may not run on transparent circuits. The serial loop function connects the SD and RD signals of the interface (in the direction specified), and will work only if a transparent circuit uses the SD and RD signals to transport data.
Runtime diagnostics is not supported for CESoPSN bundles configured over analog ports.
Normal Data Flow in the CTP Network
Figure 1 shows the normal data flow through the network.
Serial Loop to the Serial Interface
Figure 2 shows the data flow for a serial loop to the interface and the local customer device.
The serial loop toward the interface loops data arriving from the serial interface that is destined for the IP network back to the serial interface. The data is still transmitted from the serial interface to the IP network, but data from the IP network to the serial interface is blocked.
Serial Loop to the Network
Figure 3 shows the data flow for a serial loop toward the network.
Serial loops toward the IP network loops data arriving from the IP network that is destined for the serial interface back to the IP network and the remote customer device. The data is still transmitted from the IP network to the serial interface, but data from the serial interface to the IP network and the remote customer device is blocked.
