D-Channel Network Layer; B-Channel Link Layer - Ricoh A193 Service Manual

1.4. D-CHANNEL NETWORK LAYER

Code
7-40 Insufficient mandatory information elements
7-41 Abnormal LI for a mandatory information element
7-42 T301 timeout; timeout while waiting for R:CONN
7-43 T303 timeout; timeout while waiting for R:CALL-PROC etc.
7-44 T304 timeout; timeout while waiting for R:CALL-PROC etc.
7-45 T305 timeout; timeout while waiting for R:REL
7-46 T308 timeout; timeout while waiting for R:REL-COMP
7-47 T310 timeout; timeout while waiting for R:ALERT etc.
7-48 T313 timeout; timeout while waiting for R:CONN-ACK
7-49 Internal error
7-51 Release call reference during communication

1.5. B-CHANNEL LINK LAYER

Code
7-60 T3 timeout; timeout while waiting for flag
7-61 T3 timeout; timeout while waiting for SABM during an incoming call
7-62 T1 timeout x N2; timeout while waiting for UA after sending SABM
T1 timeout x N2; timeout while waiting for a response to a transmitted
7-63
S frame (P=1)
T1 timeout x N2; timeout while waiting for SABM or DISC after
7-64
sending FRMR
7-65 T1 timeout x N2; timeout while waiting for a response to DISC
7-66 RNR x N2 (other end busy, RCB counter error)
7-67 Invalid (Ad) frame received
7-68 Invalid short frame received
7-69 Link reset error
7-70 FRMR received
7-71 Non-standard (Cn) frame received
7-72 An S or U frame having an information field was received
7-73 A frame longer than the maximum N1 length was received
7-74 An S or I frame having an N(R) error was received
7-75 CRC error
(A644) ISDN
Probable Cause
Probable Cause
3-3
ERROR CODES
Action
3
3
3
3
3
3
3
3
3
3
3
Action
4
4
5
5
5
5
5
5
5
5
5
5
5
5
5
3
SM