Welltech Dialogic SS7 Protocols ISUP - Manual (Page 159)

Dialogic ® SS7 Protocols ISUP Programmer's Manual Issue 15
159
The Maintenance Event Code contained in the status field of the message
indicates the type of event. Possible values are listed in the following table :
Status Data Mnemonic Description
1 0x01 cic_mask CCm_BLR_Blocking Circuit has been remotely
maintenance blocked
2 0x02 cic_mask CCm_BLR_Unblocking Circuit has been remotely
maintenance unblocked
3 0x03 cic_mask CCm_BLS_Blocking Circuit has been locally
maintenance blocked
4 0x04 cic_mask CCm_BLS_Blocked Circuit has been locally
maintenance blocked by a group
blocking function.
5 0x05 - - Not used.
6 0x06 cic_mask CCm_BLS_Reset Local circuit maintenance
blocking removed by circuit
reset.
7 0x07 cic_mask CCm_BLS_T13_Expired Failed to receive BLA (T13
expired)
8 0x08 cic_mask CCm_BLS_T13_Recovery BLA received after T13 expiry
9 0x09 cic_mask CCm_BLS_T15_Expired Failed to receive UBA (T15
expiry)
10 0x0a cic_mask CCm_BLS_T15_Recovery UBA received after T15 expiry
11 0x0b cic_mask CCm_BLS_Bad_BLA Received an unexpected BLA
12 0x0c cic_mask CCm_BLS_Bad_UBA Received an unexpected UBA
13 0x0d cic_mask CCm_MGBS_Blocking Initiating local circuit group
maintenance blocking
14 0x0e cic_mask CCm_MGBS_BLK_Reset Circuit(s) reset while waiting for
maintenance blocking
acknowledgement.
15 0x0f cic_mask CCm_MGBS_UBLK_Reset Circuit(s) reset while waiting for
maintenance unblocking
acknowledgement.
16 0x10 cic_mask CCm_MGBS_T19_Expired Failed to receive Circuit Group
maintenance blocking
acknowledgement, CGBA, T19
expired
17 0x11 cic_mask CCm_MGBS_T21_Expired Failed to receive Circuit Group
maintenance unblocking
acknowledgement, CGUA, T21
expired
18 0x12 cic_mask CCm_MGBS_T19_Recovery Received CGUA (maintenance)
after T19 expired
19 0x13 cic_mask CCm_MGBS_T21_Recovery Received CGUA (maintenance)
after T21 expired
20 0x14 cic_mask CCm_MGBR_Blocking Circuits remotely maintenance
blocked by receipt of circuit
group blocking