Diagnostics & Error Messages • 10-3 •
The H.110 Basic Rate ISDN Board
ELxxe An error has been detected in either Layer 1 or Layer 2 for
port xx. The specific error is indicated by the value of e:
1: Synchronization has been restored
2: Slip has been detected
3: T3 has expired, Layer 1 deactivated
4: T4 has expired, persistent Layer 1 error
5: A Layer 2 N(R) state variable recovery has
taken place
6: A Layer 2 TEI assignment request has been
denied
7: An error has occurred writing to the ISDN
interface chip. The board should be reset using
the RA command.
8: Layer 1 anomaly has occurred, no action
needed
EMxxe A Layer 2 protocol error has occurred on port xx. The error
is indicated by the value of e. This corresponds to the
Management Data Layer Indication in parentheses as defined
by Q.921:
1: MDL error (A) unsolicited supervisory response
(F=1)
2: MDL error (B) or (E) unsolicited DM response
3: MDL error (C) or (D) unsolicited UA response
4: MDL error (F) peer initiated reestablishment
(SABME)
5: MDL error (G) or (H) unsuccessful
retransmission of SABME or DISC
6: MDL error (I) unsuccessful retransmission of a
status enquiry
7: MDL error (J) N(R) state variable error
8: MDL error (K) receipt of FRMR response
SM0 An EEPROM operation has failed. This indicates that either
a read or write to the EEPROM was unsuccessful.
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