The loopback and bit error rate testing (BERT) functionality in the MM710 Media Module has the following characteristics:
Provides a passive loopback for the far-end in an unpowered state
Can be set up for line or payload loopbacks
Supports incoming and outgoing ESF FDL requests
Can generate and respond to in-band loop up and loop down codes per ANSI-T1.403
Supports the generation and detection of test patterns and injection of bit errors for Bit Error Rate Testing