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Administering ISDN
Understanding ISDN cause codes
MAX Administration Guide
6-7
Table 6-2 lists the cause codes for the 1TR6 switch type.
95
Invalid message, unspecified
96
Mandatory information element is missing
97
Message type nonexistent or not implemented
98
Message not compatible with call state, or message type nonexistent
or not implemented
99
Information element nonexistent or not implemented
100
Invalid information element contents
101
Message not compatible with call state
102
Recovery on timer expiry
103
Parameter nonexistent or not implemented, passed on?
111
Protocol error, unspecified
127
Internetworking, unspecified
Table 6-2. ISDN cause codes for 1TR6 switch type
1TR6
Code
Cause
1
Invalid call reference value.
3
Bearer service not implemented. (Service not available in the A
exchange or at another position in the network, or no application has
been made for the specified service.)
7
Call identity does not exist. (Unknown call identity.)
8
Call identity in use. (Call identity has already been assigned to a sus-
pended link.)
10
No channel available. (No useful channel available on the subscriber
access line—only local significance.)
16
Requested facility not implemented. (The specified FAC code is
unknown in the A exchange or at another point in the network.)
17
Request facility not subscribed. (Request facility rejected because the
initiating or remote user does not have appropriate authorization.)
Table 6-1. ISDN cause codes (continued)
Code
Cause