Six bantam jacks on the faceplate of the MM710 Media Module provide access to the incoming and outgoing T1 signals or E1 signals:
SM allows passive monitoring of the incoming line
EM allows passive monitoring of the outgoing line
SO allows intrusive monitoring of the incoming signal from the network. When used, the SO jack breaks the connection of that signal to the framer
EI allows injection of a signal towards the framer. When used, the EI jack isolates the network Rx signal.
SI allows injection of a signal towards the network. When used, the SI jack isolates the framer Tx signal from going out to the network.
EO allows intrusive monitoring of the signal from the framer. When used, the EO jack breaks the connection of that signal to the network jack RJ48C.
