This variable indicates what type of code is
being sent across the DS3/E3 interface by the
device. (These are optional for E3 interfaces.)
The values mean:
dsx3SendNoCode
sending looped or normal data
dsx3SendLineCode
sending a request for a line loopback
dsx3SendPayloadCode
sending a request for a payload loopback
(i.e., all DS1/E1s in a DS3/E3 frame)
dsx3SendResetCode
sending a loopback deactivation request
dsx3SendDS1LoopCode
requesting to loopback a particular DS1/E1
within a DS3/E3 frame
dsx3SendTestPattern
sending a test pattern.