ADTRAN T1 CSU ACE Manual

Also see for T1 CSU ACE: Specifications

Chapter 2. Installation61203022L1-1B T1 CSU ACE User Manual 33Break-and-Test JacksThe other four jacks are break-and-test jacks used for out-of-servicetesting. These jacks bypass the connections of the modular jacks. NET INand NET OUT are used to simulate the network input and output of theT1 CSU ACE. To test the CPE, a T1 Bit Error Rate Test (BERT) test set canbe used to simulate the network. EQ IN and EQ OUT can be used to sim-ulate the CPE with a BERT test set, allowing the network to be tested.The T1 CSU ACE on the other end of the circuit can be looped back totest only the network. Most BERT test sets have the ability to send LB en-able and LB clear codes.The test set’s input impedance must be set for TERM whenconnected to the break-and-test jacks.