ADTRAN Express L128T S User Manual page 144

Appendix A. Loop Status Messages
Deactivated
The ISDN line is inactive but parameter information has previously
been exchanged with the switch.
Echo: Tx: X Rx: Y
The current transmit and receive count for the PPP echo request test.
Getting TEI #1
The Express L128T S/T's ISDN layer 1 is up and is now getting the
first TEI from the ISDN network.
Layer 1 up
The Express L128T S/T's ISDN layer 1 is up.
Link down
The ISDN link is not synchronized.
Link In Sync
The ISDN link is synchronized but layer 1 is not up.
LUCENT-5ESS Ready
The ISDN link layers 1 through 3 are up against a LUCENT 5E switch
and ready for calls.
EURO ISDN Ready
The ISDN link layers 1 through 3 are up against a EURO ISDN switch
and ready for calls.
TDX1B Ready
The ISDN link layers 1 through 3 are up against a TDX1B switch and
ready for calls.
A-2 Express L128T S/T User Manual 61202070L3-20