Chapter 3. Configuration61200217L1-1 T3SU 300 User Manual 3-3Figure 3-2. DS3 Network Configuration MenuDS3 FramingSet the framing format to match the format of the receive signal atthe network interface. C- BIT PARITY and M13 framing formats aresupported. Select A UTO to allow the interface to detect the framingtype automatically.Line LengthSet the line length to reflect the physical length of the DS3 networkline. Set to L ONG if the cabling distance exceeds 50 feet; set to S HORTif the distance is less than 50 feet.DS3 TimingSet the timing to L OOP if the T3SU 300 is to derive timing from thenetwork; set to L OCAL if the unit is to be the master timing sourcefor the circuit. In most cases, the unit should be configured forL OOP timing.
