SNMP Agent Configuration

SNMP Enabled

Default = Off.

Enables support for SNMP. This option is not required if using SMTP or Syslog.

Community (Read-only)

Default = Blank.

The SNMP community name to which the system belongs.

SNMP Port

Default = 161. Range = 161, or 1024 to 65535. The port on which the system listens for SNMP polling.

Device ID

This is a text field used to add additional information to alarms. If an SSL VPN is configured, Avaya recommends that the Device ID match an SSL VPN service Account Name. Each SSL VPN service account name has an associated SSL VPN tunnel IP address. Having the displayed Device ID match an SSL VPN service account name helps identify a particular SSL VPN tunnel IP address to use for remotely managing IP Office.

Contact

This is a text field used to add additional information to alarms.

Location

This is a text field used to add additional information to alarms.

QoS Parameters

These parameters are used if the setting System Settings > System > System Events > Enable RTCP Monitor on Port 5005 is set to On. They are used as alarm thresholds for the QoS data collected by the system for calls made by Avaya H.323 phones and for phones using VCM channels. If a monitored call exceeds any of the threshold an alarm is sent to the System Status application. Quality of Service alarms can also be sent from the system using Alarms.

• The alarm occurs at the end of a call. If a call is held or parked and then retrieved, an alarm can occur for each segment of the call that exceeded a threshold.

• Where a call is between two extensions on the system, it is possible that both extensions will generate an alarm for the call.

• An alarm will not be triggered for the QoS parameters recorded during the first 5 seconds of a call.

Round Trip Delay (msec)

Default = 350.

Less than 160ms is high quality. Less than 350ms is good quality. Any higher delay will be noticeable by those involved in the call. Note that, depending on the compression codec being used, some delay stems from the signal processing and cannot be removed: G.711 = 40ms, G.723a = 160ms, G.729 = 80ms.

Jitter (msec)

Default =20.

Jitter is a measure of the variance in the time for different voice packets in the same call to reach the destination. Excessive jitter will become audible as echo.

Packet Loss (%)

Default = 3.0.

Excessive packet loss will be audible as clipped words and may also cause call setup delays.

Good Quality

High Quality

Round Trip Delay

< 350ms

< 160ms

Jitter

< 20ms

< 20ms

Packet Loss

< 3%

< 1%