The RTP statistics application collects data and statistics for RTP sessions (streams) from Branch Gateway VoIP engine. You can view the data and configure SNMP traps to be generated when the QoS level falls below a configured level. RTP statistics support IPv4 and IPv6 addresses.
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Note:
An alternative tool available from Avaya for debugging QoS problems is VMON. VMON is an RTCP QoS reports collector. VMON support, available in all Avaya devices, is the capability of a VoIP device to send a copy of an RTCP message to the IP address of a VMON server. VMON can collect RTCP reports, store them on its host hard disk, and analyze and generate graphic reports. However, VMON requires a dedicated Windows server. The RTP statistics, application runs on Branch Gateway firmware, and does not require any dedicated hardware. For information about configuring VMON in CM, see Administrator Guide for Avaya Aura® Communication Manager.
Branch Gateway performs traceroutes whenever RTP statistics is enabled.
The RTP statistics application provides the following functionality:
Collects QoS data from Branch Gateway VoIP engines, including Real-Time Control Protocol (RTCP) data, traceroute reports, and information from the DSP regarding jitter buffer, internal delays, and so on.
Note:
RTCP is a standard QoS report companion protocol to RTP. RTP endpoints periodically send RTCP report packets to their remote peer (or peers in multicast). RTCP reports include QoS data such as delay, jitter, and loss.
Collects call data from Branch Gateway, such as duration, start-time, and end-time.
Displays the RTP statistics in CLI and MIB formats.
Displays summary reports for the VoIP engines.
Assesses QoS status based on configurable thresholds on an extensive set of QoS metrics.
Generates QoS traps.
QoS traps are notifications sent via SNMP upon termination of an RTP stream that suffers from bad QoS. These notifications include extensive data about the session that enables offline troubleshooting of QoS problems. The trap rate is controlled by a configurable trap rate limiter.
Note:
QoS trap generation is an especially convenient troubleshooting tool for large installations, since all devices that support the RTP statistics application can be configured to send traps to a single SNMP trap manager.
Generates QoS fault and clear traps.
QoS fault traps are notifications that are sent when more than a configurable number of active sessions have QoS indicators over the configured thresholds. A QoS clear trap is a notification that is sent after a QoS fault trap when the number of active RTP sessions with QoS indicators over the configured thresholds reduces to a specified number.
