AudioCodes Mediant 4000 SBC, User Manual

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CHAPTER 47 Viewing Performance Monitoring
Mediant 4000 SBC | User's Manual
Use the Zoom In button to increase the displayed time resolution or the Zoom Out
button to decrease it. Instead of using these buttons, you can use the slide ruler. As you increase
the resolution, more data is displayed on the graph. The minimum resolution is about 30 seconds;
the maximum resolution is about an hour.
To pause the graph, click the Pause button; click Play to resume.
Configuring Performance Profiles
The Performance Profile table lets you configure up to 2628 Performance Profile rules. A
Performance Profile rule defines thresholds of performance monitoring call metrics for Major and
Minor severity alarms. If the threshold is crossed, the device raises the corresponding severity
alarm. You can configure a Performance Profile rule for all calls (
globally ), or per SRD or IP Group.
You can configure the alarm thresholds for the following call metrics:
■ Answer Success Ratio or ASR (also known as Answer Seizure Ratio): The number (in
percentage) of answered calls (i.e. number of seizures resulting in an answer signal) out of the
total number of attempted calls (seizures). The metric is calculated for the outgoing call leg.
The metric includes the following SNMP performance monitoring MIBs:
● PM_gwSBCASR: ASR for all (global) entities (i.e., all IP Groups and SRDs)
● PM_gwSBCIPGroupASR: ASR per IP Group
● PM_gwSBCSRDASR: ASR per SRD
If the configured ASR minor or major thresholds are crossed, the device raises the SNMP
alarm, acASRThresholdAlarm (OID 1.3.6.1.4.1.5003.9.10.1.21.2.0.111).
To view ASR in the Web interface, see Viewing Call Success and Failure Ratio .
■ Network Effectiveness Ratio (NER): The number (in percentage) of successfully connected
calls out of the total number of attempted calls (seizures). The metric measures the ability of
the network to deliver a call to the called terminal. In addition to answered calls, the following
SIP response codes are regarded as successfully connected calls: 408 (Request Timeout),
480 (Temporarily Unavailable), and 486 (Busy Here). The metric is calculated for the outgoing
call leg. The metric includes the following SNMP performance monitoring MIBs:
● PM_gwSBCNER: NER for all (global) entities (i.e., all IP Groups and SRDs)
● PM_gwSBCIPGroupNER: NER per IP Group
● PM_gwSBCSRDNER: NER per SRD
If the configured NER minor or major thresholds are crossed, the device raises the SNMP
alarm, AcNERThresholdAlarm (OID 1.3.6.1.4.1.5003.9.10.1.21.2.0.113).
■ Average Call Duration (ACD): The ACD plus the session disconnect time (SDD) is the
duration from when the SIP 200 OK is received to when the SIP Bye message is sent. The
metric is calculated for both incoming and outgoing call legs. The metric includes the following
SNMP performance monitoring MIBs:
● PM_gwSBCACD: ACD for all (global) entities (i.e., all IP Groups and SRDs)
● PM_gwSBCIPGroupACD: ACD per IP Group
● PM_gwSBCSRDACD: ACD per SRD
If the configured ACD minor or major thresholds are crossed, the device raises the SNMP
alarm, acACDThresholdAlarm (OID 1.3.6.1.4.1.5003.9.10.1.21.2.0.112).
To view ACD in the Web interface, see Viewing Average Call Duration .
At any given time during a call, a voice metric can be in one of the following color-coded quality
states (as displayed in OVOC):
■ Green: Indicates good call quality
■ Yellow: Indicates fair call quality
■ Red: Indicates poor call quality
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