TABLE 1/Q.791 Monitoring and measurements for Signalling System No. 7 networks MTP - signalling link performance Usage Description of measurements Units O A M Duration of Level Obligator Act. perm. References measurement y a) 1.1Duration of Link in the secs/SL b) OAM 30 min. 2 Yes perm. In-Service State 1.2SL Failure-All Reasons event/SL M on occur. 2 Yes 1.3SL Failure-Abnormal - event/SL M on occur. 2 FIBR/BSNR No perm.Q.703, S 5.3 1.4 SL Failure-Excessive event/SL M on occur. 2 No delay of ack. Q.703, S 5.3.1 1.5 SL Failure-Excessive event/SL M on occur. 2 No error rate Q.703, S 11.2.2 1.6 SL Failure-Excessive event/SL M on occur. 2 No duration of congestion Q.703 1.7SL alignment failure events/SL M 30 min. 2 No Q.703, S 11.3 1.8 Number of Signal Units events/SL M 30 min. 2 Yes in error c) perm.Q.703, S 4 1.9 Number of negative ack. events/SL M 30 min. 2 No received 1.10Local Automatic events/SL OM 30 min. 3 changeover event/SL on occur. 3 No No Q.704, S 5 1.11Local Automatic event/SL OM on occur. 3 No changeback Q.704, S 6 1.12SL Restoration event/SL M on occur. 3 No Q.703, S 3.2.3 a) See S 3.1.2 (applies to all tables). b) SL = Signalling Link. c) The interpretation of this count is implementation dependant. TABLE 2/Q.791 Monitoring and measurements for Signalling System No. 7 networks - MTP signalling link availability Usage Description of measurements Units O A M Duration of Level Obligator Act. perm. References measurement y a) 2.1 Duration of SL secs/SL OAM 30 min. 3 Yes perm. unavailability (for any reason) 2.2-2.4 Deleted 2.5Duration of SL inhibition secs/SL M 30 min. 3 due to local management actions No Q.704, S 3.2.8 2.6Duration of SL inhibition secs/SL M 30 min. 3 No due to remote management Q.704, S actions 3.2.8 2.7Duration of SL secs/SL M 30 min. 3 No unavailability due to link Q.704, S failure 3.2.2 2.8 Deleted. 2.9 Duration of SL secs/SL unavailability due to remote processor outage OM 30 min. 3 No Q.704, S 3.2.6 2.10Start of remote event/SL OM on occur. 3 No processor outage Q.704, S 3.2.6 2.11Stop of remote event/SL OM on occur. 3 No processor outage Q.704, S 3.2.7 2.12Deleted 2.13Local Management events/SL OM 30 min. 3 No Inhibit events/SL 5 min. 3 No Q.704, S 10.2 2.14Local Management events/SL OM 30 min. 3 No Uninhibit events/SL 5 min. 3 No Q.704, S 10.3 2.15Duration of Local Busy secs/SL O 30 min. 2 No Q.704, S 9.3 TABLE 3/Q.791 Monitoring and measurements for Signalling System No. 7 networks MTP signalling link utilization Usage Description of measurements Units O A M Duration of Level Obligator Act. perm. References measurement y a) 3.1Number of SIF and SIO octets/SL OAM 30 min. 3/2 Yes act. Q.703, S octets transmitted 2.3.8 3.2 Octets retransmitted octets/SL A 30 min. 2 No Q.703, S 5 3.3Number of message signal MSUs/S A 30 min. units transmitted 3/2 No 3.4Number of SIF and SIO octets/SL OAM 30 min. 3/2 Yes octets received act. 3.5Number of message signal MSUs/SL A 30 min. 3/2 No units received 3.6SL congestion indications events/SL OAM 30 min. No events/SL O 5 min. No event/SL on occur. No Q.704, S 3.8 3.7Cumulative duration of SL secs/SL OAM congestion 30 min. 3 No 3.8Deleted 3.9Stop of SL congestion event/SL O on occur. 3 No 3.10MSUs discarded due to MSUs/SL O 30 min. 3 Yes SL congestion perm. 3.11Number of congestion events/SL OM events resulting in loss of event/SL MSUs 30 min. 3 No on occur. 3 No TABLE 4/Q.791 Monitoring and measurements for Signalling System No. 7 networks MTP signalling link set and route set availability Usage Description of measurements Units O A M Duration of Level Obligator Act. perm. References measurement y a) 4.1Deleted 4.2Duration of unavailability secs/linkset OM 30 min. 3 No of signalling linkset 4.3Start of linkset failure event/linkset OM on occur. 3 No 4.4Stop of linkset failure event/linkset OM on occur. 3 No 4.5Initiation of broadcast event/linkset OM on occur. 3 No TFP due to failure of measured linkset a) Q.704, S 13 4.6Initiation of broadcast event/linkset OM on occur. 3 No TFA for recovery of measured linkset a) Q.704, S 13 4.7 - 4.8 Deleted 4.9Unavailability of route events/destin OAM 30 min. 3 b) set to a given destination of a-tion(s) perm.Q.704, S set of destinations 11.2.1 4.10Duration of secs/destinat OAM 30 min. 3 b) unavailability in 4.9 ion(s) perm.Q.704, S 11.2.2 4.11Start of event/destina OM on occur. 3 No unavailability in 4.9 tion(s) Q.704, S 11.2.1 4.12Stop of unavailability in 4.9 event/destina OM on occur. 3 No tion(s) Q.704, S 11.2.2 a) These measurements only apply to Signal Transfer Points. b) These measurements are only obligatory in the international network. TABLE 5/Q.791 Monitoring and measurements for Signalling System No. 7 networks MTP adjacent signalling point status accessibility Usage Description of measurements Units O A M Duration of Level Obligator Act. perm. References measurement y a) 5.1Adjacent SP inaccessible event/SP OM on occur. 3 Yes perm. M 30 min. 5 min. 5.2Duration of adjacent SP events/SP O 5 min. 3 Yes inaccessible secs/SP O 30 min. perm. 5.3Deleted M 5.4Stop of adjacent SP event/SP OM on occur. 3 No inaccessible A 30 min. Yes 5.5MSU discarded due to a MSUs/SP OM 5 min. No routing data error a) perm. perm.Q.795 a) The number of MSUs discarded can be used to trigger the MTP Route Verification Test (MVRT) described in Recommendation Q.795, S 2.3. TABLE 6/Q.791 Monitoring and measurements for Signalling System No. 7 networks MTP signalling link traffic distribution (Signalling route utilization) Usage Description of measurements Units O A M Duration of Level Obligator Act. perm. References measurement y a) 6.1Number of SIF and SIO octets/OPC A 30 min. 3 No octets received with given OPC 6.2Number of SIF and SIO octets/DPC A 30 min. 3 No octets transmitted with given DPC 6.3Number of SIF and SIO octets/SIO A 30 min. 3 octets handled with given SIO No 6.4Number of SIF and SIO octets/SIO/ A 30 min. 3 No octets received with given OPC OPC and SIO 6.5Number of SIF and SIO octets/SIO/ A 30 min. 3 No octets transmitted with given DPC DPC and SIO 6.6Number of SIF and SIO octets/SIO/ A 30 min. 3 No octets handled with given OPC, OPC/DPC DPC and SIO Note 1 - Activation of these measurements is recommended on per point code or sets of point codes and/or SIO. Note 2 - Some of these measurements may be of interest for accounting purposes. TABLE 7/Q.791 Monitoring and measurements for Signalling System No. 7 networks SCCP performance Usage Description of measurements Units O A M Duration of Level Obligator Act. perm. References measurement y a) 7.1Routing Failure - No event O on occur. SCCP Yes act. Q.714, S translation for address of msgs AM 30 min. SCCP perm. 2.4 such nature a) 7.2Routing Failure - No event O on occur. SCCP Yes translation for this specific msgs AM 30 min. SCCP act. address a) perm.Q.714, S 2.4 7.3Routing Failure - Network event O Failure (Point Code not msgs AM available) on occur. SCCP Yes 30 min. SCCP act. perm.Q.714, S 2.4 7.4Routing Failure - Network event O on occur. SCCP Yes Congestion msgs AM 30 min. SCCP act. perm.Q.714, S 2.4 7.5Routing Failure - event O on occur. SCCP Yes Subsystem Failure msgs AM 30 min. SCCP act. (unavailable) perm.Q.714, S 2.4 7.6Routing Failure - event O Subsystem Congestion b) msgs AM on occur. SCCP Yes 30 min. SCCP act. perm.Q.714, S 2.4 7.7Routing Failure - event O on occur. SCCP Yes Unequipped user (Subsystem) msgs AM 30 min. SCCP act. perm.Q.714, S 2.4 7.8Syntax error detected event M on occur. SCCP Yes msgs M 30 min. SCCP act. perm.Q.714, S 4.3 7.9Routing Failure - Reason event O unknown msgs AM on occur. SCCP Yes 30 min. SCCP act. perm.Q.714, S 2.4 a) These measurements only required at SCCP nodes with global title translation capabilities. b) For further study. TABLE 8/Q.791 Monitoring and measurements for Signalling System No. 7 networks sub-system availability Usage Description of measurements Units O A M Duration of Level Obligator Act. perm. References measurement y a) 8.1Start of local SCCP event O on occur. SCCP No perm. unavailable failure a) 8.2Start of local SCCP event O on occur. SCCP No unavailable - maintenance made busy a) perm. 8.3Start of local SCCP event O on occur. unavailable - congestion a) SCCP No perm. 8.4Stop of local SCCP event O on occur. SCCP No unavailable - (all reasons) a) perm. 8.5Duration of local SCCP secs A 30 min. SCCP No unavailable - (all reasons) a) perm. 8.6Subsystem out-of-service event M on occur. SCCP b) request granted perm.Q.714, S 5.3.5.3 8.7Subsystem out-of-service event request denied M on occur. SCCP b) perm.Q.714, S 5.3.5.3 a) These measurements are system architecture dependent. b) These measurements are obligatory for replicated systems. TABLE 9/Q.791 Monitoring and measurements for Signalling System No. 7 networks SCCP - Utilization Usage Description of measurements Units O A M Duration of Level Obligator Act. perm. References measurement y a) 9.1UDTS message sent msgs OA 30 min. SCCP No perm. Q.714, S 4.2 9.2UDTS message received msgs OA 30 min. SCCP No perm. Q.714, S 4.2 9.3Total messages handled msgs A 30 min. (from local or remote subsystems) SCCP No perm.Q.714, S 2.3 9.4Total messages intended msgs A 30 min. SCCP No for local subsystems perm.Q.714, S 2.3 9.5Messages requiring global msgs A 30 min. SCCP No title translation a) perm.Q.714, S 2.2 9.6Total messages sent (for msgs/class A 30 min. SCCP Yes connectionless only) (by class perm.Q.714, S 0, 1) 1.1.2 9.7Total messages received msgs/class A 30 min. SCCP Yes (for connectionless only) (by perm.Q.714, S class 0, 1) 1.1.2 9.8Messages sent to a backup msgs/SS A 30 min. SCCP Note b) subsystem perm.Q.714, S 5.3.2 a) This measurement is only required at SCCP nodes with global title translation capabilities. b) This measurement is obligatory for replicated systems.