INTEGER { the-PVC-does-not-exist-ie-unassigned (1), no-route-to-specified-transit-network (2), no-route-to-destination (3), channel-unacceptable (6), call-awarded-and-being-delivered-in-an-est-channel (7), normal-call-clearing (16), remote-PVC-already-connected-ie-busy (17), no-user-present-in-call (18), remote-PVC-down-ie-unavailable (21), destination-out-of-order (27), invalid-number-format (28), facility-rejected (29), response-to-status-inquiry (30), normal-unspecified (31), no-DLCI-available (34), network-out-of-order (38), permanent-frame-mode-connection-out-of-service (39), permanent-frame-mode-connection-operational (40), temporary-failure (41), switching-equipment-congestion (42), access-information-discarded (43), specified-DLCI-unavailable (44), resource-unavailable (47), quality-of-service-not-available (49), requested-facility-not-subscribed (50), bearer-capability-not-authorized (57), bearer-capability-not-presently-available (58), service-or-option-not-available-unspecified (63), bearer-capability-not-implemented (65), channel-type-not-implemented (66), only-restricted-digital-capability-is-available (70), service-or-option-not-implemented-unspecified (79), invalid-call-reference (81), identified-channel-does-not-exist (82), user-not-member-of-CUG (87), incompatible-destination (88), non-existent-CUG (90), invalid-transit-network-selection (91), invalid-message-unspecified (95), missing-element (96), message-type-unknown (97), message-not-compatible (98), element-non-existent-or-not-implemented (99), invalid-element (100), invalid-message-for-state (101), timer-recovery (102), protocol-error-unspecified (111), interworking-unspecified (127), normal-condition (128) }