ADTRAN 4175043L2 Network Interface, STS-1 Configuration, 3. Network Configuration Menu, Timing

Chapter 3. Configuration

NETWORK INTERFACE

Select NETWORK INTERFACE to access the network configuration parameters (see Figure 3-3). Configure the MX2800 STS-1 network settings to match the STS-1 signal received from the service provider.

Figure 3-3. Network Configuration Menu

STS-1 Configuration

Use the STS-1 CONFIGURATION selections described below to configure the STS-1 network settings to match your application.

Line Length

Set the line length to reflect the physical length of the STS-1 network line. Set to LONG if the cabling distance is between 225-450 feet; set to SHORT if the distance is less than 225 feet.

Timing

Selects the source of timing used to derive the transmit signal. The MX2800 STS-1 has three modes of timing operation: LOOP, FREE- RUN, and EXTERNAL. LOOP timing configures the unit to recover clocking from the STS-1 receive signal. Loss of the STS-1 receive

61200659L1-1 MX2800 STS-1 User Manual 3-3